/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 03:39:37,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 03:39:37,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 03:39:37,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 03:39:37,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 03:39:37,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 03:39:37,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 03:39:37,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 03:39:37,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 03:39:37,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 03:39:37,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 03:39:37,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 03:39:37,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 03:39:37,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 03:39:37,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 03:39:37,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 03:39:37,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 03:39:37,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 03:39:37,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 03:39:37,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 03:39:37,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 03:39:37,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 03:39:37,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 03:39:37,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 03:39:37,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 03:39:37,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 03:39:37,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 03:39:37,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 03:39:37,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 03:39:37,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 03:39:37,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 03:39:37,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 03:39:37,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 03:39:37,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 03:39:37,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 03:39:37,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 03:39:37,904 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-RepeatedVariableLbe.epf [2021-03-25 03:39:37,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 03:39:37,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 03:39:37,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 03:39:37,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 03:39:37,933 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 03:39:37,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 03:39:37,933 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 03:39:37,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 03:39:37,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 03:39:37,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 03:39:37,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 03:39:37,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 03:39:37,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 03:39:37,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 03:39:37,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 03:39:37,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 03:39:37,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 03:39:37,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 03:39:37,935 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 03:39:37,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 03:39:37,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 03:39:37,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 03:39:38,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 03:39:38,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 03:39:38,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 03:39:38,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 03:39:38,189 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 03:39:38,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-25 03:39:38,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0531ad9d4/9fac3cab6a064225a721e2a92a28341a/FLAG1e51105fd [2021-03-25 03:39:38,743 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 03:39:38,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-25 03:39:38,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0531ad9d4/9fac3cab6a064225a721e2a92a28341a/FLAG1e51105fd [2021-03-25 03:39:39,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0531ad9d4/9fac3cab6a064225a721e2a92a28341a [2021-03-25 03:39:39,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 03:39:39,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 03:39:39,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 03:39:39,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 03:39:39,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 03:39:39,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46892ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39, skipping insertion in model container [2021-03-25 03:39:39,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 03:39:39,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 03:39:39,284 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] [2021-03-25 03:39:39,287 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] [2021-03-25 03:39:39,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 03:39:39,294 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 03:39:39,316 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] [2021-03-25 03:39:39,318 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] [2021-03-25 03:39:39,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 03:39:39,358 INFO L208 MainTranslator]: Completed translation [2021-03-25 03:39:39,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39 WrapperNode [2021-03-25 03:39:39,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 03:39:39,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 03:39:39,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 03:39:39,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 03:39:39,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 03:39:39,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 03:39:39,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 03:39:39,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 03:39:39,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... [2021-03-25 03:39:39,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 03:39:39,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 03:39:39,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 03:39:39,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 03:39:39,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 03:39:39,449 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-25 03:39:39,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-25 03:39:39,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 03:39:39,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 03:39:39,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 03:39:39,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 03:39:39,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 03:39:39,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 03:39:39,454 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 03:39:39,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 03:39:39,697 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-25 03:39:39,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:39:39 BoogieIcfgContainer [2021-03-25 03:39:39,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 03:39:39,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 03:39:39,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 03:39:39,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 03:39:39,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 03:39:39" (1/3) ... [2021-03-25 03:39:39,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50262fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:39:39, skipping insertion in model container [2021-03-25 03:39:39,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:39:39" (2/3) ... [2021-03-25 03:39:39,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50262fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:39:39, skipping insertion in model container [2021-03-25 03:39:39,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:39:39" (3/3) ... [2021-03-25 03:39:39,703 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-03-25 03:39:39,706 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 03:39:39,712 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 03:39:39,712 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 03:39:39,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:39:39,749 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 03:39:39,761 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 03:39:39,781 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 03:39:39,781 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 03:39:39,781 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 03:39:39,781 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 03:39:39,781 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 03:39:39,781 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 03:39:39,781 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 03:39:39,781 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 03:39:39,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2021-03-25 03:39:39,831 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-25 03:39:39,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 03:39:39,838 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. [2021-03-25 03:39:39,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 88 transitions, 181 flow [2021-03-25 03:39:39,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 87 transitions, 177 flow [2021-03-25 03:39:39,842 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:39:39,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 87 transitions, 177 flow [2021-03-25 03:39:39,853 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 87 transitions, 177 flow [2021-03-25 03:39:39,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 87 transitions, 177 flow [2021-03-25 03:39:39,874 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-25 03:39:39,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 03:39:39,876 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. [2021-03-25 03:39:39,879 INFO L142 LiptonReduction]: Number of co-enabled transitions 2542 [2021-03-25 03:39:40,415 INFO L154 LiptonReduction]: Checked pairs total: 1996 [2021-03-25 03:39:40,415 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 03:39:40,417 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 575 [2021-03-25 03:39:40,424 INFO L129 PetriNetUnfolder]: 10/44 cut-off events. [2021-03-25 03:39:40,424 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 03:39:40,425 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:39:40,425 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:39:40,425 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:39:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:39:40,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1907373222, now seen corresponding path program 1 times [2021-03-25 03:39:40,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:39:40,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653579504] [2021-03-25 03:39:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:39:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 03:39:40,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:40,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:39:40,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:40,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 03:39:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 03:39:40,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653579504] [2021-03-25 03:39:40,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 03:39:40,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 03:39:40,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742839003] [2021-03-25 03:39:40,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 03:39:40,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 03:39:40,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 03:39:40,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 03:39:40,550 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 126 [2021-03-25 03:39:40,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 56 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:40,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 03:39:40,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 126 [2021-03-25 03:39:40,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 03:39:40,597 INFO L129 PetriNetUnfolder]: 56/169 cut-off events. [2021-03-25 03:39:40,597 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 03:39:40,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 169 events. 56/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 476 event pairs, 2 based on Foata normal form. 43/165 useless extension candidates. Maximal degree in co-relation 200. Up to 24 conditions per place. [2021-03-25 03:39:40,599 INFO L132 encePairwiseOnDemand]: 115/126 looper letters, 8 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2021-03-25 03:39:40,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 125 flow [2021-03-25 03:39:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 03:39:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 03:39:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-03-25 03:39:40,607 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2021-03-25 03:39:40,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-03-25 03:39:40,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-03-25 03:39:40,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 03:39:40,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-03-25 03:39:40,612 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) [2021-03-25 03:39:40,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:40,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:40,617 INFO L185 Difference]: Start difference. First operand has 44 places, 56 transitions, 115 flow. Second operand 3 states and 280 transitions. [2021-03-25 03:39:40,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 125 flow [2021-03-25 03:39:40,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 03:39:40,620 INFO L241 Difference]: Finished difference. Result has 41 places, 48 transitions, 118 flow [2021-03-25 03:39:40,621 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=48} [2021-03-25 03:39:40,622 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2021-03-25 03:39:40,622 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:39:40,622 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 48 transitions, 118 flow [2021-03-25 03:39:40,622 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 48 transitions, 118 flow [2021-03-25 03:39:40,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 48 transitions, 118 flow [2021-03-25 03:39:40,629 INFO L129 PetriNetUnfolder]: 42/138 cut-off events. [2021-03-25 03:39:40,629 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 03:39:40,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 138 events. 42/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 1 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 154. Up to 12 conditions per place. [2021-03-25 03:39:40,631 INFO L142 LiptonReduction]: Number of co-enabled transitions 898 [2021-03-25 03:39:41,010 INFO L154 LiptonReduction]: Checked pairs total: 273 [2021-03-25 03:39:41,010 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 03:39:41,010 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 388 [2021-03-25 03:39:41,010 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 45 transitions, 112 flow [2021-03-25 03:39:41,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,011 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:39:41,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:39:41,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 03:39:41,011 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:39:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:39:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash 32955086, now seen corresponding path program 1 times [2021-03-25 03:39:41,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:39:41,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183526204] [2021-03-25 03:39:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:39:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 03:39:41,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:41,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:39:41,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:41,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 03:39:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 03:39:41,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183526204] [2021-03-25 03:39:41,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 03:39:41,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 03:39:41,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545941037] [2021-03-25 03:39:41,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 03:39:41,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 03:39:41,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 03:39:41,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 03:39:41,039 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 129 [2021-03-25 03:39:41,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 03:39:41,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 129 [2021-03-25 03:39:41,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 03:39:41,054 INFO L129 PetriNetUnfolder]: 46/141 cut-off events. [2021-03-25 03:39:41,054 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2021-03-25 03:39:41,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 141 events. 46/141 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 360 event pairs, 2 based on Foata normal form. 8/113 useless extension candidates. Maximal degree in co-relation 193. Up to 16 conditions per place. [2021-03-25 03:39:41,055 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 7 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2021-03-25 03:39:41,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 130 flow [2021-03-25 03:39:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 03:39:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 03:39:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2021-03-25 03:39:41,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6950904392764858 [2021-03-25 03:39:41,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2021-03-25 03:39:41,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2021-03-25 03:39:41,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 03:39:41,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2021-03-25 03:39:41,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,059 INFO L185 Difference]: Start difference. First operand has 38 places, 45 transitions, 112 flow. Second operand 3 states and 269 transitions. [2021-03-25 03:39:41,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 130 flow [2021-03-25 03:39:41,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 03:39:41,061 INFO L241 Difference]: Finished difference. Result has 39 places, 45 transitions, 116 flow [2021-03-25 03:39:41,061 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=45} [2021-03-25 03:39:41,061 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2021-03-25 03:39:41,061 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:39:41,061 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 45 transitions, 116 flow [2021-03-25 03:39:41,062 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 45 transitions, 116 flow [2021-03-25 03:39:41,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 45 transitions, 116 flow [2021-03-25 03:39:41,068 INFO L129 PetriNetUnfolder]: 51/157 cut-off events. [2021-03-25 03:39:41,068 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-25 03:39:41,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 157 events. 51/157 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 432 event pairs, 2 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 190. Up to 16 conditions per place. [2021-03-25 03:39:41,069 INFO L142 LiptonReduction]: Number of co-enabled transitions 846 [2021-03-25 03:39:41,234 INFO L154 LiptonReduction]: Checked pairs total: 168 [2021-03-25 03:39:41,234 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 03:39:41,234 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 173 [2021-03-25 03:39:41,235 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 114 flow [2021-03-25 03:39:41,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,235 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:39:41,235 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:39:41,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 03:39:41,235 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:39:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:39:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1711264529, now seen corresponding path program 1 times [2021-03-25 03:39:41,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:39:41,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972286039] [2021-03-25 03:39:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:39:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 03:39:41,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:41,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:39:41,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:41,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 03:39:41,262 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 03:39:41,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:39:41,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:41,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:39:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 03:39:41,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972286039] [2021-03-25 03:39:41,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 03:39:41,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 03:39:41,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820791816] [2021-03-25 03:39:41,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 03:39:41,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 03:39:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 03:39:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 03:39:41,265 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 130 [2021-03-25 03:39:41,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 44 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 03:39:41,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 130 [2021-03-25 03:39:41,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 03:39:41,307 INFO L129 PetriNetUnfolder]: 264/532 cut-off events. [2021-03-25 03:39:41,307 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-03-25 03:39:41,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 532 events. 264/532 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2148 event pairs, 52 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 897. Up to 225 conditions per place. [2021-03-25 03:39:41,310 INFO L132 encePairwiseOnDemand]: 119/130 looper letters, 19 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2021-03-25 03:39:41,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 182 flow [2021-03-25 03:39:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 03:39:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 03:39:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2021-03-25 03:39:41,312 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2021-03-25 03:39:41,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2021-03-25 03:39:41,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2021-03-25 03:39:41,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 03:39:41,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2021-03-25 03:39:41,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,314 INFO L185 Difference]: Start difference. First operand has 38 places, 44 transitions, 114 flow. Second operand 3 states and 264 transitions. [2021-03-25 03:39:41,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 182 flow [2021-03-25 03:39:41,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 03:39:41,316 INFO L241 Difference]: Finished difference. Result has 41 places, 49 transitions, 166 flow [2021-03-25 03:39:41,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=41, PETRI_TRANSITIONS=49} [2021-03-25 03:39:41,316 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2021-03-25 03:39:41,316 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:39:41,316 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 49 transitions, 166 flow [2021-03-25 03:39:41,316 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 49 transitions, 166 flow [2021-03-25 03:39:41,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 49 transitions, 166 flow [2021-03-25 03:39:41,330 INFO L129 PetriNetUnfolder]: 183/423 cut-off events. [2021-03-25 03:39:41,331 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2021-03-25 03:39:41,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 423 events. 183/423 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1777 event pairs, 29 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 695. Up to 141 conditions per place. [2021-03-25 03:39:41,333 INFO L142 LiptonReduction]: Number of co-enabled transitions 704 [2021-03-25 03:39:41,340 INFO L154 LiptonReduction]: Checked pairs total: 21 [2021-03-25 03:39:41,340 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 03:39:41,340 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-25 03:39:41,358 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 166 flow [2021-03-25 03:39:41,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,358 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:39:41,358 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:39:41,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 03:39:41,359 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:39:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:39:41,359 INFO L82 PathProgramCache]: Analyzing trace with hash -893110981, now seen corresponding path program 1 times [2021-03-25 03:39:41,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:39:41,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078620706] [2021-03-25 03:39:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:39:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 03:39:41,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:41,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:39:41,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:41,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 03:39:41,380 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 03:39:41,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:39:41,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:39:41,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:39:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 03:39:41,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078620706] [2021-03-25 03:39:41,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 03:39:41,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 03:39:41,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545297147] [2021-03-25 03:39:41,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 03:39:41,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 03:39:41,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 03:39:41,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 03:39:41,383 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 130 [2021-03-25 03:39:41,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 49 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 03:39:41,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 130 [2021-03-25 03:39:41,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 03:39:41,430 INFO L129 PetriNetUnfolder]: 330/624 cut-off events. [2021-03-25 03:39:41,430 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2021-03-25 03:39:41,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 624 events. 330/624 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2521 event pairs, 60 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 1237. Up to 212 conditions per place. [2021-03-25 03:39:41,432 INFO L132 encePairwiseOnDemand]: 119/130 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2021-03-25 03:39:41,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 226 flow [2021-03-25 03:39:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 03:39:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 03:39:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2021-03-25 03:39:41,433 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2021-03-25 03:39:41,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2021-03-25 03:39:41,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2021-03-25 03:39:41,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 03:39:41,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2021-03-25 03:39:41,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,436 INFO L185 Difference]: Start difference. First operand has 41 places, 49 transitions, 166 flow. Second operand 3 states and 264 transitions. [2021-03-25 03:39:41,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 226 flow [2021-03-25 03:39:41,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 56 transitions, 210 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 03:39:41,438 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-25 03:39:41,439 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-25 03:39:41,439 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2021-03-25 03:39:41,439 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:39:41,439 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 0 transitions, 0 flow [2021-03-25 03:39:41,439 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 0 transitions, 0 flow [2021-03-25 03:39:41,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 03:39:41,439 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 03:39:41,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 03:39:41,440 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. [2021-03-25 03:39:41,440 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 03:39:41,440 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 03:39:41,440 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 03:39:41,440 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 03:39:41,440 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 03:39:41,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 03:39:41,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 03:39:41,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 03:39:41 BasicIcfg [2021-03-25 03:39:41,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 03:39:41,444 INFO L168 Benchmark]: Toolchain (without parser) took 2413.20 ms. Allocated memory was 339.7 MB in the beginning and 438.3 MB in the end (delta: 98.6 MB). Free memory was 302.1 MB in the beginning and 391.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.0 GB. [2021-03-25 03:39:41,445 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 339.7 MB. Free memory was 320.5 MB in the beginning and 320.4 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 03:39:41,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.76 ms. Allocated memory is still 339.7 MB. Free memory was 301.9 MB in the beginning and 304.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-03-25 03:39:41,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.98 ms. Allocated memory is still 339.7 MB. Free memory was 304.0 MB in the beginning and 301.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 03:39:41,446 INFO L168 Benchmark]: Boogie Preprocessor took 14.43 ms. Allocated memory is still 339.7 MB. Free memory was 301.9 MB in the beginning and 300.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 03:39:41,446 INFO L168 Benchmark]: RCFGBuilder took 301.57 ms. Allocated memory is still 339.7 MB. Free memory was 300.8 MB in the beginning and 276.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 03:39:41,446 INFO L168 Benchmark]: TraceAbstraction took 1744.19 ms. Allocated memory was 339.7 MB in the beginning and 438.3 MB in the end (delta: 98.6 MB). Free memory was 275.7 MB in the beginning and 391.3 MB in the end (delta: -115.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 03:39:41,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 339.7 MB. Free memory was 320.5 MB in the beginning and 320.4 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 325.76 ms. Allocated memory is still 339.7 MB. Free memory was 301.9 MB in the beginning and 304.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.98 ms. Allocated memory is still 339.7 MB. Free memory was 304.0 MB in the beginning and 301.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.43 ms. Allocated memory is still 339.7 MB. Free memory was 301.9 MB in the beginning and 300.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 301.57 ms. Allocated memory is still 339.7 MB. Free memory was 300.8 MB in the beginning and 276.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1744.19 ms. Allocated memory was 339.7 MB in the beginning and 438.3 MB in the end (delta: 98.6 MB). Free memory was 275.7 MB in the beginning and 391.3 MB in the end (delta: -115.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 562.9ms, 67 PlacesBefore, 44 PlacesAfterwards, 87 TransitionsBefore, 56 TransitionsAfterwards, 2542 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 38 TotalNumberOfCompositions, 1996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 876, positive: 832, positive conditional: 0, positive unconditional: 832, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 707, positive: 685, positive conditional: 0, positive unconditional: 685, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 707, positive: 685, positive conditional: 0, positive unconditional: 685, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 876, positive: 147, positive conditional: 0, positive unconditional: 147, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 707, unknown conditional: 0, unknown unconditional: 707] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 387.7ms, 41 PlacesBefore, 38 PlacesAfterwards, 48 TransitionsBefore, 45 TransitionsAfterwards, 898 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 273 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 21, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 21, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 37, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 21, unknown conditional: 0, unknown unconditional: 21] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 172.5ms, 39 PlacesBefore, 38 PlacesAfterwards, 45 TransitionsBefore, 44 TransitionsAfterwards, 846 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , Cache Queries: [ total: 16, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.4ms, 41 PlacesBefore, 41 PlacesAfterwards, 49 TransitionsBefore, 49 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 21 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.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] , Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 39 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: 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: 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: 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] , 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): 36, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - 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: 4.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1663.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 206.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 638.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.6ms SsaConstructionTime, 29.6ms SatisfiabilityAnalysisTime, 87.3ms InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...