/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 14:48:12,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 14:48:12,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 14:48:12,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 14:48:12,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 14:48:12,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 14:48:12,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 14:48:12,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 14:48:12,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 14:48:12,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 14:48:12,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 14:48:12,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 14:48:12,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 14:48:12,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 14:48:12,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 14:48:12,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 14:48:12,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 14:48:12,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 14:48:12,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 14:48:12,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 14:48:12,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 14:48:12,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 14:48:12,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 14:48:12,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 14:48:12,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 14:48:12,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 14:48:12,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 14:48:12,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 14:48:12,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 14:48:12,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 14:48:12,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 14:48:12,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 14:48:12,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 14:48:12,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 14:48:12,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 14:48:12,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 14:48:12,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 14:48:12,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 14:48:12,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 14:48:12,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 14:48:12,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 14:48:12,556 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 14:48:12,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 14:48:12,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 14:48:12,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 14:48:12,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 14:48:12,579 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 14:48:12,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 14:48:12,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 14:48:12,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 14:48:12,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 14:48:12,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 14:48:12,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 14:48:12,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 14:48:12,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 14:48:12,580 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 14:48:12,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 14:48:12,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 14:48:12,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 14:48:12,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 14:48:12,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 14:48:12,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 14:48:12,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 14:48:12,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 14:48:12,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 14:48:12,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 14:48:12,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 14:48:12,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 14:48:12,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 14:48:12,582 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 14:48:12,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 14:48:12,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 14:48:12,582 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 14:48:12,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 14:48:12,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 14:48:12,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 14:48:12,889 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-11 14:48:12,890 INFO L275 PluginConnector]: CDTParser initialized [2021-06-11 14:48:12,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-06-11 14:48:12,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac716c1e/7982251d95df4e6a8d2898be54aef310/FLAG85700a147 [2021-06-11 14:48:13,404 INFO L306 CDTParser]: Found 1 translation units. [2021-06-11 14:48:13,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-06-11 14:48:13,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac716c1e/7982251d95df4e6a8d2898be54aef310/FLAG85700a147 [2021-06-11 14:48:13,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ac716c1e/7982251d95df4e6a8d2898be54aef310 [2021-06-11 14:48:13,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 14:48:13,450 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-11 14:48:13,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-11 14:48:13,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-11 14:48:13,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-11 14:48:13,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:13,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36689d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13, skipping insertion in model container [2021-06-11 14:48:13,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:13,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-11 14:48:13,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-11 14:48:13,853 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-ext/17_szymanski.i[30132,30145] [2021-06-11 14:48:13,859 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-ext/17_szymanski.i[30481,30494] [2021-06-11 14:48:13,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 14:48:13,868 INFO L203 MainTranslator]: Completed pre-run [2021-06-11 14:48:13,897 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-ext/17_szymanski.i[30132,30145] [2021-06-11 14:48:13,899 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-ext/17_szymanski.i[30481,30494] [2021-06-11 14:48:13,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 14:48:13,975 INFO L208 MainTranslator]: Completed translation [2021-06-11 14:48:13,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13 WrapperNode [2021-06-11 14:48:13,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-11 14:48:13,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 14:48:13,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 14:48:13,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 14:48:13,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 14:48:14,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 14:48:14,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 14:48:14,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 14:48:14,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (1/1) ... [2021-06-11 14:48:14,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 14:48:14,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 14:48:14,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 14:48:14,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 14:48:14,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (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 [2021-06-11 14:48:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-11 14:48:14,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-11 14:48:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-11 14:48:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-11 14:48:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-11 14:48:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-11 14:48:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 14:48:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 14:48:14,101 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 14:48:14,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 14:48:14,464 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-06-11 14:48:14,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 02:48:14 BoogieIcfgContainer [2021-06-11 14:48:14,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 14:48:14,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 14:48:14,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 14:48:14,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 14:48:14,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.06 02:48:13" (1/3) ... [2021-06-11 14:48:14,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775af8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 02:48:14, skipping insertion in model container [2021-06-11 14:48:14,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 02:48:13" (2/3) ... [2021-06-11 14:48:14,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775af8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 02:48:14, skipping insertion in model container [2021-06-11 14:48:14,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 02:48:14" (3/3) ... [2021-06-11 14:48:14,471 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-06-11 14:48:14,477 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 14:48:14,482 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-11 14:48:14,483 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 14:48:14,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 14:48:14,510 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 14:48:14,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-11 14:48:14,546 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 14:48:14,546 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 14:48:14,546 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 14:48:14,546 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 14:48:14,547 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 14:48:14,547 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 14:48:14,547 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 14:48:14,547 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 14:48:14,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2021-06-11 14:48:14,606 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-06-11 14:48:14,607 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 14:48:14,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-06-11 14:48:14,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 88 transitions, 181 flow [2021-06-11 14:48:14,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 87 transitions, 177 flow [2021-06-11 14:48:14,619 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 14:48:14,631 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 87 transitions, 177 flow [2021-06-11 14:48:14,636 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 87 transitions, 177 flow [2021-06-11 14:48:14,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 87 transitions, 177 flow [2021-06-11 14:48:14,660 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-06-11 14:48:14,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 14:48:14,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 142 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-06-11 14:48:14,667 INFO L151 LiptonReduction]: Number of co-enabled transitions 2542 [2021-06-11 14:48:14,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:14,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:14,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:14,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:14,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 14:48:14,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 14:48:14,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 14:48:14,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:14,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:14,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:14,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 14:48:15,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 14:48:15,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 14:48:15,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 14:48:15,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-11 14:48:15,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 14:48:15,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 14:48:15,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 14:48:15,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 14:48:15,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:15,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:15,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:16,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 14:48:16,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 14:48:16,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-11 14:48:16,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:16,324 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-11 14:48:16,490 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-11 14:48:16,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 14:48:16,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 14:48:16,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 14:48:16,603 INFO L163 LiptonReduction]: Checked pairs total: 5762 [2021-06-11 14:48:16,603 INFO L165 LiptonReduction]: Total number of compositions: 52 [2021-06-11 14:48:16,605 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1987 [2021-06-11 14:48:16,614 INFO L129 PetriNetUnfolder]: 15/41 cut-off events. [2021-06-11 14:48:16,614 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 14:48:16,614 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 14:48:16,615 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 14:48:16,615 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 14:48:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 14:48:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash 206851555, now seen corresponding path program 1 times [2021-06-11 14:48:16,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 14:48:16,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111451820] [2021-06-11 14:48:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 14:48:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 14:48:16,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:16,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 14:48:16,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111451820] [2021-06-11 14:48:16,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 14:48:16,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 14:48:16,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664008227] [2021-06-11 14:48:16,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-11 14:48:16,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 14:48:16,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-11 14:48:16,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-11 14:48:16,745 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 140 [2021-06-11 14:48:16,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 51 transitions, 105 flow. Second operand has 2 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:16,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 14:48:16,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 140 [2021-06-11 14:48:16,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 14:48:16,755 INFO L129 PetriNetUnfolder]: 12/40 cut-off events. [2021-06-11 14:48:16,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 14:48:16,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 12/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 11/39 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-11 14:48:16,756 INFO L132 encePairwiseOnDemand]: 129/140 looper letters, 0 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2021-06-11 14:48:16,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 83 flow [2021-06-11 14:48:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-11 14:48:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-11 14:48:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 217 transitions. [2021-06-11 14:48:16,766 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.775 [2021-06-11 14:48:16,766 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 217 transitions. [2021-06-11 14:48:16,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 217 transitions. [2021-06-11 14:48:16,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 14:48:16,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 217 transitions. [2021-06-11 14:48:16,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:16,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:16,775 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:16,777 INFO L185 Difference]: Start difference. First operand has 36 places, 51 transitions, 105 flow. Second operand 2 states and 217 transitions. [2021-06-11 14:48:16,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 83 flow [2021-06-11 14:48:16,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 14:48:16,780 INFO L241 Difference]: Finished difference. Result has 32 places, 40 transitions, 82 flow [2021-06-11 14:48:16,782 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=40} [2021-06-11 14:48:16,782 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2021-06-11 14:48:16,782 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 14:48:16,783 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 40 transitions, 82 flow [2021-06-11 14:48:16,783 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 40 transitions, 82 flow [2021-06-11 14:48:16,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 40 transitions, 82 flow [2021-06-11 14:48:16,787 INFO L129 PetriNetUnfolder]: 12/40 cut-off events. [2021-06-11 14:48:16,787 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 14:48:16,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 40 events. 12/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2021-06-11 14:48:16,788 INFO L151 LiptonReduction]: Number of co-enabled transitions 722 [2021-06-11 14:48:16,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:16,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:16,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:16,962 INFO L163 LiptonReduction]: Checked pairs total: 1672 [2021-06-11 14:48:16,962 INFO L165 LiptonReduction]: Total number of compositions: 3 [2021-06-11 14:48:16,962 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 180 [2021-06-11 14:48:16,963 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 40 transitions, 82 flow [2021-06-11 14:48:16,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:16,964 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 14:48:16,964 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 14:48:16,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 14:48:16,964 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 14:48:16,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 14:48:16,971 INFO L82 PathProgramCache]: Analyzing trace with hash 95599929, now seen corresponding path program 1 times [2021-06-11 14:48:16,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 14:48:16,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021933092] [2021-06-11 14:48:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 14:48:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 14:48:17,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:17,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 14:48:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 14:48:17,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021933092] [2021-06-11 14:48:17,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 14:48:17,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 14:48:17,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857084785] [2021-06-11 14:48:17,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 14:48:17,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 14:48:17,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 14:48:17,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 14:48:17,052 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 143 [2021-06-11 14:48:17,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 40 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 14:48:17,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 143 [2021-06-11 14:48:17,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 14:48:17,081 INFO L129 PetriNetUnfolder]: 63/163 cut-off events. [2021-06-11 14:48:17,081 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 14:48:17,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 163 events. 63/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 515 event pairs, 1 based on Foata normal form. 4/108 useless extension candidates. Maximal degree in co-relation 204. Up to 24 conditions per place. [2021-06-11 14:48:17,083 INFO L132 encePairwiseOnDemand]: 138/143 looper letters, 8 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2021-06-11 14:48:17,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 116 flow [2021-06-11 14:48:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 14:48:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 14:48:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-06-11 14:48:17,087 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6526806526806527 [2021-06-11 14:48:17,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-06-11 14:48:17,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-06-11 14:48:17,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 14:48:17,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-06-11 14:48:17,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,090 INFO L185 Difference]: Start difference. First operand has 31 places, 40 transitions, 82 flow. Second operand 3 states and 280 transitions. [2021-06-11 14:48:17,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 116 flow [2021-06-11 14:48:17,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 14:48:17,093 INFO L241 Difference]: Finished difference. Result has 35 places, 44 transitions, 116 flow [2021-06-11 14:48:17,093 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=35, PETRI_TRANSITIONS=44} [2021-06-11 14:48:17,093 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2021-06-11 14:48:17,093 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 14:48:17,094 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 44 transitions, 116 flow [2021-06-11 14:48:17,094 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 44 transitions, 116 flow [2021-06-11 14:48:17,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 44 transitions, 116 flow [2021-06-11 14:48:17,108 INFO L129 PetriNetUnfolder]: 51/138 cut-off events. [2021-06-11 14:48:17,108 INFO L130 PetriNetUnfolder]: For 5/7 co-relation queries the response was YES. [2021-06-11 14:48:17,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 138 events. 51/138 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 409 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 180. Up to 16 conditions per place. [2021-06-11 14:48:17,117 INFO L151 LiptonReduction]: Number of co-enabled transitions 836 [2021-06-11 14:48:17,124 INFO L163 LiptonReduction]: Checked pairs total: 840 [2021-06-11 14:48:17,124 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 14:48:17,125 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-06-11 14:48:17,126 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 44 transitions, 116 flow [2021-06-11 14:48:17,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 14:48:17,126 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 14:48:17,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 14:48:17,127 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 14:48:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 14:48:17,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2075180214, now seen corresponding path program 1 times [2021-06-11 14:48:17,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 14:48:17,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390046794] [2021-06-11 14:48:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 14:48:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 14:48:17,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:17,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 14:48:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 14:48:17,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390046794] [2021-06-11 14:48:17,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 14:48:17,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 14:48:17,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577863130] [2021-06-11 14:48:17,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 14:48:17,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 14:48:17,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 14:48:17,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 14:48:17,171 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 143 [2021-06-11 14:48:17,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 44 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 14:48:17,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 143 [2021-06-11 14:48:17,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 14:48:17,201 INFO L129 PetriNetUnfolder]: 53/139 cut-off events. [2021-06-11 14:48:17,201 INFO L130 PetriNetUnfolder]: For 19/29 co-relation queries the response was YES. [2021-06-11 14:48:17,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 139 events. 53/139 cut-off events. For 19/29 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 403 event pairs, 0 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 217. Up to 21 conditions per place. [2021-06-11 14:48:17,209 INFO L132 encePairwiseOnDemand]: 137/143 looper letters, 6 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2021-06-11 14:48:17,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 138 flow [2021-06-11 14:48:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 14:48:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 14:48:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2021-06-11 14:48:17,212 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6503496503496503 [2021-06-11 14:48:17,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2021-06-11 14:48:17,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2021-06-11 14:48:17,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 14:48:17,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2021-06-11 14:48:17,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,216 INFO L185 Difference]: Start difference. First operand has 35 places, 44 transitions, 116 flow. Second operand 3 states and 279 transitions. [2021-06-11 14:48:17,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 138 flow [2021-06-11 14:48:17,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 14:48:17,218 INFO L241 Difference]: Finished difference. Result has 36 places, 44 transitions, 125 flow [2021-06-11 14:48:17,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=36, PETRI_TRANSITIONS=44} [2021-06-11 14:48:17,220 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2021-06-11 14:48:17,221 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 14:48:17,221 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 44 transitions, 125 flow [2021-06-11 14:48:17,221 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 44 transitions, 125 flow [2021-06-11 14:48:17,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 44 transitions, 125 flow [2021-06-11 14:48:17,232 INFO L129 PetriNetUnfolder]: 51/137 cut-off events. [2021-06-11 14:48:17,232 INFO L130 PetriNetUnfolder]: For 5/7 co-relation queries the response was YES. [2021-06-11 14:48:17,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 137 events. 51/137 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 398 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2021-06-11 14:48:17,234 INFO L151 LiptonReduction]: Number of co-enabled transitions 828 [2021-06-11 14:48:17,251 INFO L163 LiptonReduction]: Checked pairs total: 840 [2021-06-11 14:48:17,251 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 14:48:17,252 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-06-11 14:48:17,254 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 44 transitions, 125 flow [2021-06-11 14:48:17,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 14:48:17,255 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 14:48:17,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 14:48:17,256 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 14:48:17,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 14:48:17,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1045915215, now seen corresponding path program 1 times [2021-06-11 14:48:17,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 14:48:17,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053616165] [2021-06-11 14:48:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 14:48:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 14:48:17,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:17,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 14:48:17,320 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-06-11 14:48:17,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:17,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 14:48:17,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053616165] [2021-06-11 14:48:17,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 14:48:17,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 14:48:17,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100452078] [2021-06-11 14:48:17,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 14:48:17,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 14:48:17,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 14:48:17,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 14:48:17,325 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 143 [2021-06-11 14:48:17,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 44 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 14:48:17,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 143 [2021-06-11 14:48:17,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 14:48:17,392 INFO L129 PetriNetUnfolder]: 278/531 cut-off events. [2021-06-11 14:48:17,392 INFO L130 PetriNetUnfolder]: For 36/40 co-relation queries the response was YES. [2021-06-11 14:48:17,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 531 events. 278/531 cut-off events. For 36/40 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2175 event pairs, 52 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 920. Up to 228 conditions per place. [2021-06-11 14:48:17,396 INFO L132 encePairwiseOnDemand]: 131/143 looper letters, 20 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2021-06-11 14:48:17,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 199 flow [2021-06-11 14:48:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 14:48:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 14:48:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2021-06-11 14:48:17,398 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6480186480186481 [2021-06-11 14:48:17,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2021-06-11 14:48:17,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2021-06-11 14:48:17,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 14:48:17,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2021-06-11 14:48:17,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,402 INFO L185 Difference]: Start difference. First operand has 36 places, 44 transitions, 125 flow. Second operand 3 states and 278 transitions. [2021-06-11 14:48:17,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 199 flow [2021-06-11 14:48:17,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 14:48:17,404 INFO L241 Difference]: Finished difference. Result has 39 places, 50 transitions, 182 flow [2021-06-11 14:48:17,404 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=39, PETRI_TRANSITIONS=50} [2021-06-11 14:48:17,405 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2021-06-11 14:48:17,405 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 14:48:17,405 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 50 transitions, 182 flow [2021-06-11 14:48:17,405 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 50 transitions, 182 flow [2021-06-11 14:48:17,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 50 transitions, 182 flow [2021-06-11 14:48:17,427 INFO L129 PetriNetUnfolder]: 188/400 cut-off events. [2021-06-11 14:48:17,427 INFO L130 PetriNetUnfolder]: For 42/44 co-relation queries the response was YES. [2021-06-11 14:48:17,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 400 events. 188/400 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1621 event pairs, 28 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 690. Up to 139 conditions per place. [2021-06-11 14:48:17,431 INFO L151 LiptonReduction]: Number of co-enabled transitions 658 [2021-06-11 14:48:17,442 INFO L163 LiptonReduction]: Checked pairs total: 331 [2021-06-11 14:48:17,442 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 14:48:17,443 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-06-11 14:48:17,444 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 50 transitions, 182 flow [2021-06-11 14:48:17,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,444 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 14:48:17,444 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 14:48:17,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 14:48:17,444 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 14:48:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 14:48:17,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1020452311, now seen corresponding path program 2 times [2021-06-11 14:48:17,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 14:48:17,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891389778] [2021-06-11 14:48:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 14:48:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 14:48:17,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:17,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-11 14:48:17,476 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-06-11 14:48:17,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:17,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 14:48:17,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 14:48:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 14:48:17,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891389778] [2021-06-11 14:48:17,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 14:48:17,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 14:48:17,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473256228] [2021-06-11 14:48:17,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 14:48:17,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 14:48:17,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 14:48:17,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 14:48:17,480 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 143 [2021-06-11 14:48:17,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 50 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 14:48:17,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 143 [2021-06-11 14:48:17,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 14:48:17,557 INFO L129 PetriNetUnfolder]: 349/632 cut-off events. [2021-06-11 14:48:17,557 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-06-11 14:48:17,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 632 events. 349/632 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2585 event pairs, 63 based on Foata normal form. 0/481 useless extension candidates. Maximal degree in co-relation 1266. Up to 217 conditions per place. [2021-06-11 14:48:17,561 INFO L132 encePairwiseOnDemand]: 131/143 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2021-06-11 14:48:17,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 248 flow [2021-06-11 14:48:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 14:48:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 14:48:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2021-06-11 14:48:17,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.655011655011655 [2021-06-11 14:48:17,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2021-06-11 14:48:17,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2021-06-11 14:48:17,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 14:48:17,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2021-06-11 14:48:17,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,569 INFO L185 Difference]: Start difference. First operand has 39 places, 50 transitions, 182 flow. Second operand 3 states and 281 transitions. [2021-06-11 14:48:17,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 248 flow [2021-06-11 14:48:17,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 58 transitions, 229 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-11 14:48:17,575 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2021-06-11 14:48:17,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2021-06-11 14:48:17,575 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2021-06-11 14:48:17,576 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 14:48:17,576 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 0 transitions, 0 flow [2021-06-11 14:48:17,576 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 0 transitions, 0 flow [2021-06-11 14:48:17,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 14:48:17,576 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 14:48:17,576 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 14:48:17,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-06-11 14:48:17,577 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 14:48:17,577 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 14:48:17,577 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 14:48:17,577 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-06-11 14:48:17,580 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 14:48:17,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 14:48:17,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 14:48:17,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 02:48:17 BasicIcfg [2021-06-11 14:48:17,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 14:48:17,585 INFO L168 Benchmark]: Toolchain (without parser) took 4134.85 ms. Allocated memory was 373.3 MB in the beginning and 474.0 MB in the end (delta: 100.7 MB). Free memory was 335.6 MB in the beginning and 337.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 100.2 MB. Max. memory is 16.0 GB. [2021-06-11 14:48:17,587 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 373.3 MB. Free memory was 353.8 MB in the beginning and 353.7 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 14:48:17,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.52 ms. Allocated memory is still 373.3 MB. Free memory was 335.4 MB in the beginning and 335.8 MB in the end (delta: -394.3 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-06-11 14:48:17,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.24 ms. Allocated memory is still 373.3 MB. Free memory was 335.8 MB in the beginning and 334.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 14:48:17,588 INFO L168 Benchmark]: Boogie Preprocessor took 20.55 ms. Allocated memory is still 373.3 MB. Free memory was 334.8 MB in the beginning and 332.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 14:48:17,590 INFO L168 Benchmark]: RCFGBuilder took 418.21 ms. Allocated memory is still 373.3 MB. Free memory was 332.7 MB in the beginning and 308.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-11 14:48:17,591 INFO L168 Benchmark]: TraceAbstraction took 3117.21 ms. Allocated memory was 373.3 MB in the beginning and 474.0 MB in the end (delta: 100.7 MB). Free memory was 307.5 MB in the beginning and 337.4 MB in the end (delta: -29.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 16.0 GB. [2021-06-11 14:48:17,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 373.3 MB. Free memory was 353.8 MB in the beginning and 353.7 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 522.52 ms. Allocated memory is still 373.3 MB. Free memory was 335.4 MB in the beginning and 335.8 MB in the end (delta: -394.3 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.24 ms. Allocated memory is still 373.3 MB. Free memory was 335.8 MB in the beginning and 334.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.55 ms. Allocated memory is still 373.3 MB. Free memory was 334.8 MB in the beginning and 332.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 418.21 ms. Allocated memory is still 373.3 MB. Free memory was 332.7 MB in the beginning and 308.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3117.21 ms. Allocated memory was 373.3 MB in the beginning and 474.0 MB in the end (delta: 100.7 MB). Free memory was 307.5 MB in the beginning and 337.4 MB in the end (delta: -29.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1967.2ms, 67 PlacesBefore, 36 PlacesAfterwards, 87 TransitionsBefore, 51 TransitionsAfterwards, 2542 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 52 TotalNumberOfCompositions, 5762 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2431, positive: 2262, positive conditional: 2262, positive unconditional: 0, negative: 169, negative conditional: 169, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2431, positive: 2262, positive conditional: 0, positive unconditional: 2262, negative: 169, negative conditional: 0, negative unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2431, positive: 2262, positive conditional: 0, positive unconditional: 2262, negative: 169, negative conditional: 0, negative unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1394, positive: 1354, positive conditional: 0, positive unconditional: 1354, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1394, positive: 1301, positive conditional: 0, positive unconditional: 1301, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 93, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 196, positive: 119, positive conditional: 0, positive unconditional: 119, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2431, positive: 908, positive conditional: 0, positive unconditional: 908, negative: 129, negative conditional: 0, negative unconditional: 129, unknown: 1394, unknown conditional: 0, unknown unconditional: 1394] , Statistics on independence cache: Total cache size (in pairs): 1394, Positive cache size: 1354, Positive conditional cache size: 0, Positive unconditional cache size: 1354, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 179.0ms, 32 PlacesBefore, 31 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 722 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 1672 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 544, positive: 459, positive conditional: 459, positive unconditional: 0, negative: 85, negative conditional: 85, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 544, positive: 459, positive conditional: 0, positive unconditional: 459, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 544, positive: 459, positive conditional: 0, positive unconditional: 459, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 184, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 184, positive: 136, positive conditional: 0, positive unconditional: 136, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 544, positive: 297, positive conditional: 0, positive unconditional: 297, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 184, unknown conditional: 0, unknown unconditional: 184] , Statistics on independence cache: Total cache size (in pairs): 1578, Positive cache size: 1516, Positive conditional cache size: 0, Positive unconditional cache size: 1516, Negative cache size: 62, Negative conditional cache size: 0, Negative unconditional cache size: 62, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.6ms, 35 PlacesBefore, 35 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 836 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 840 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 164, positive: 124, positive conditional: 124, positive unconditional: 0, negative: 40, negative conditional: 40, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 164, positive: 124, positive conditional: 0, positive unconditional: 124, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 164, positive: 124, positive conditional: 0, positive unconditional: 124, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 164, positive: 121, positive conditional: 0, positive unconditional: 121, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 1581, Positive cache size: 1519, Positive conditional cache size: 0, Positive unconditional cache size: 1519, Negative cache size: 62, Negative conditional cache size: 0, Negative unconditional cache size: 62, Eliminated conditions: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.1ms, 36 PlacesBefore, 36 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 828 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 840 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 184, positive: 144, positive conditional: 144, positive unconditional: 0, negative: 40, negative conditional: 40, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 184, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 184, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 184, positive: 142, positive conditional: 0, positive unconditional: 142, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 1583, Positive cache size: 1521, Positive conditional cache size: 0, Positive unconditional cache size: 1521, Negative cache size: 62, Negative conditional cache size: 0, Negative unconditional cache size: 62, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.3ms, 39 PlacesBefore, 39 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 658 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 331 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 50, positive: 33, positive conditional: 33, positive unconditional: 0, negative: 17, negative conditional: 17, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 50, positive: 33, positive conditional: 1, positive unconditional: 32, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 33, positive conditional: 1, positive unconditional: 32, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 50, positive: 26, positive conditional: 1, positive unconditional: 25, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 1591, Positive cache size: 1528, Positive conditional cache size: 0, Positive unconditional cache size: 1528, Negative cache size: 63, Negative conditional cache size: 0, Negative unconditional cache size: 63, Eliminated conditions: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 36 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1591, Positive cache size: 1528, Positive conditional cache size: 0, Positive unconditional cache size: 1528, Negative cache size: 63, Negative conditional cache size: 0, Negative unconditional cache size: 63, Eliminated conditions: 0 - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: 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 2 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3041.7ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 309.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2062.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 10 SDslu, 0 SDs, 0 SdLazy, 60 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=4, InterpolantAutomatonStates: 14, 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: 9.5ms SsaConstructionTime, 52.2ms SatisfiabilityAnalysisTime, 164.9ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 77 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...