/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 10:02:55,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 10:02:55,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 10:02:55,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 10:02:55,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 10:02:55,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 10:02:55,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 10:02:55,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 10:02:55,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 10:02:55,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 10:02:55,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 10:02:55,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 10:02:55,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 10:02:55,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 10:02:55,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 10:02:55,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 10:02:55,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 10:02:55,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 10:02:55,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 10:02:55,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 10:02:55,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 10:02:55,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 10:02:55,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 10:02:55,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 10:02:55,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 10:02:55,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 10:02:55,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 10:02:55,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 10:02:55,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 10:02:55,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 10:02:55,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 10:02:55,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 10:02:55,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 10:02:55,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 10:02:55,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 10:02:55,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 10:02:55,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 10:02:55,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 10:02:55,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 10:02:55,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 10:02:55,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 10:02:55,186 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 10:02:55,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 10:02:55,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 10:02:55,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 10:02:55,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 10:02:55,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 10:02:55,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 10:02:55,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 10:02:55,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 10:02:55,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 10:02:55,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 10:02:55,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 10:02:55,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 10:02:55,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 10:02:55,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 10:02:55,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 10:02:55,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 10:02:55,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:02:55,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 10:02:55,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 10:02:55,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 10:02:55,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 10:02:55,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 10:02:55,191 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 10:02:55,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 10:02:55,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 10:02:55,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 10:02:55,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 10:02:55,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 10:02:55,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 10:02:55,549 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 10:02:55,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-24 10:02:55,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473aa3d88/2859442574704acf8e6e99991a2b8bf4/FLAG824c98ac3 [2021-03-24 10:02:56,071 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 10:02:56,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-24 10:02:56,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473aa3d88/2859442574704acf8e6e99991a2b8bf4/FLAG824c98ac3 [2021-03-24 10:02:56,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473aa3d88/2859442574704acf8e6e99991a2b8bf4 [2021-03-24 10:02:56,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 10:02:56,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 10:02:56,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 10:02:56,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 10:02:56,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 10:02:56,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48bea205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56, skipping insertion in model container [2021-03-24 10:02:56,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 10:02:56,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 10:02:56,519 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] [2021-03-24 10:02:56,528 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] [2021-03-24 10:02:56,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:02:56,539 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 10:02:56,565 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] [2021-03-24 10:02:56,567 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] [2021-03-24 10:02:56,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:02:56,632 INFO L208 MainTranslator]: Completed translation [2021-03-24 10:02:56,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56 WrapperNode [2021-03-24 10:02:56,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 10:02:56,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 10:02:56,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 10:02:56,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 10:02:56,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 10:02:56,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 10:02:56,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 10:02:56,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 10:02:56,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... [2021-03-24 10:02:56,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 10:02:56,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 10:02:56,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 10:02:56,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 10:02:56,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:02:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-24 10:02:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-24 10:02:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 10:02:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 10:02:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 10:02:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 10:02:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 10:02:56,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 10:02:56,772 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 10:02:57,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 10:02:57,066 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-24 10:02:57,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:02:57 BoogieIcfgContainer [2021-03-24 10:02:57,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 10:02:57,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 10:02:57,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 10:02:57,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 10:02:57,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:02:56" (1/3) ... [2021-03-24 10:02:57,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3676a1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:02:57, skipping insertion in model container [2021-03-24 10:02:57,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:02:56" (2/3) ... [2021-03-24 10:02:57,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3676a1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:02:57, skipping insertion in model container [2021-03-24 10:02:57,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:02:57" (3/3) ... [2021-03-24 10:02:57,074 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-03-24 10:02:57,078 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 10:02:57,082 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 10:02:57,082 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 10:02:57,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,101 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,103 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:02:57,110 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:02:57,126 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 10:02:57,155 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:02:57,155 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:02:57,155 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:02:57,155 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:02:57,157 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:02:57,157 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:02:57,157 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:02:57,157 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:02:57,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2021-03-24 10:02:57,202 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-24 10:02:57,203 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:02:57,207 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. [2021-03-24 10:02:57,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 88 transitions, 181 flow [2021-03-24 10:02:57,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 87 transitions, 177 flow [2021-03-24 10:02:57,213 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:02:57,220 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 87 transitions, 177 flow [2021-03-24 10:02:57,222 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 87 transitions, 177 flow [2021-03-24 10:02:57,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 87 transitions, 177 flow [2021-03-24 10:02:57,239 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-24 10:02:57,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:02:57,241 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. [2021-03-24 10:02:57,244 INFO L142 LiptonReduction]: Number of co-enabled transitions 2542 [2021-03-24 10:02:57,925 INFO L154 LiptonReduction]: Checked pairs total: 1996 [2021-03-24 10:02:57,926 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-24 10:02:57,928 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 716 [2021-03-24 10:02:57,950 INFO L129 PetriNetUnfolder]: 10/44 cut-off events. [2021-03-24 10:02:57,950 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:02:57,951 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:02:57,951 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:02:57,952 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:02:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:02:57,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1907373222, now seen corresponding path program 1 times [2021-03-24 10:02:57,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:02:57,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020101344] [2021-03-24 10:02:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:02:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:02:58,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:02:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:02:58,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020101344] [2021-03-24 10:02:58,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:02:58,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:02:58,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138664906] [2021-03-24 10:02:58,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:02:58,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:02:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:02:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:02:58,164 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 126 [2021-03-24 10:02:58,167 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) [2021-03-24 10:02:58,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:02:58,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 126 [2021-03-24 10:02:58,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:02:58,227 INFO L129 PetriNetUnfolder]: 56/169 cut-off events. [2021-03-24 10:02:58,227 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:02:58,231 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. [2021-03-24 10:02:58,233 INFO L132 encePairwiseOnDemand]: 115/126 looper letters, 8 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2021-03-24 10:02:58,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 125 flow [2021-03-24 10:02:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:02:58,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:02:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-03-24 10:02:58,249 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2021-03-24 10:02:58,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-03-24 10:02:58,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-03-24 10:02:58,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:02:58,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-03-24 10:02:58,260 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) [2021-03-24 10:02:58,266 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) [2021-03-24 10:02:58,267 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) [2021-03-24 10:02:58,268 INFO L185 Difference]: Start difference. First operand has 44 places, 56 transitions, 115 flow. Second operand 3 states and 280 transitions. [2021-03-24 10:02:58,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 125 flow [2021-03-24 10:02:58,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:02:58,273 INFO L241 Difference]: Finished difference. Result has 41 places, 48 transitions, 118 flow [2021-03-24 10:02:58,275 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} [2021-03-24 10:02:58,275 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2021-03-24 10:02:58,276 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 48 transitions, 118 flow [2021-03-24 10:02:58,276 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) [2021-03-24 10:02:58,276 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:02:58,276 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:02:58,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 10:02:58,277 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:02:58,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:02:58,278 INFO L82 PathProgramCache]: Analyzing trace with hash 32955086, now seen corresponding path program 1 times [2021-03-24 10:02:58,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:02:58,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334286276] [2021-03-24 10:02:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:02:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:02:58,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:02:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:02:58,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334286276] [2021-03-24 10:02:58,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:02:58,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:02:58,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508144010] [2021-03-24 10:02:58,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:02:58,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:02:58,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:02:58,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:02:58,377 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 126 [2021-03-24 10:02:58,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 48 transitions, 118 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) [2021-03-24 10:02:58,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:02:58,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 126 [2021-03-24 10:02:58,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:02:58,406 INFO L129 PetriNetUnfolder]: 46/144 cut-off events. [2021-03-24 10:02:58,406 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2021-03-24 10:02:58,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 144 events. 46/144 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 364 event pairs, 2 based on Foata normal form. 8/116 useless extension candidates. Maximal degree in co-relation 194. Up to 16 conditions per place. [2021-03-24 10:02:58,407 INFO L132 encePairwiseOnDemand]: 122/126 looper letters, 7 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2021-03-24 10:02:58,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 136 flow [2021-03-24 10:02:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:02:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:02:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2021-03-24 10:02:58,412 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2021-03-24 10:02:58,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2021-03-24 10:02:58,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2021-03-24 10:02:58,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:02:58,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2021-03-24 10:02:58,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,416 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) [2021-03-24 10:02:58,416 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) [2021-03-24 10:02:58,416 INFO L185 Difference]: Start difference. First operand has 41 places, 48 transitions, 118 flow. Second operand 3 states and 266 transitions. [2021-03-24 10:02:58,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 136 flow [2021-03-24 10:02:58,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 10:02:58,419 INFO L241 Difference]: Finished difference. Result has 42 places, 48 transitions, 122 flow [2021-03-24 10:02:58,419 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=42, PETRI_TRANSITIONS=48} [2021-03-24 10:02:58,420 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2021-03-24 10:02:58,420 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 48 transitions, 122 flow [2021-03-24 10:02:58,420 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) [2021-03-24 10:02:58,420 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:02:58,420 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, 1, 1, 1] [2021-03-24 10:02:58,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 10:02:58,421 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:02:58,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:02:58,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1247473356, now seen corresponding path program 1 times [2021-03-24 10:02:58,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:02:58,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7643185] [2021-03-24 10:02:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:02:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:02:58,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:02:58,480 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-24 10:02:58,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:02:58,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7643185] [2021-03-24 10:02:58,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:02:58,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:02:58,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093511305] [2021-03-24 10:02:58,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:02:58,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:02:58,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:02:58,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:02:58,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 126 [2021-03-24 10:02:58,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 48 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:02:58,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 126 [2021-03-24 10:02:58,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:02:58,541 INFO L129 PetriNetUnfolder]: 183/421 cut-off events. [2021-03-24 10:02:58,542 INFO L130 PetriNetUnfolder]: For 33/34 co-relation queries the response was YES. [2021-03-24 10:02:58,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 421 events. 183/421 cut-off events. For 33/34 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1696 event pairs, 43 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 708. Up to 167 conditions per place. [2021-03-24 10:02:58,545 INFO L132 encePairwiseOnDemand]: 115/126 looper letters, 19 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2021-03-24 10:02:58,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 190 flow [2021-03-24 10:02:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:02:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:02:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2021-03-24 10:02:58,546 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2021-03-24 10:02:58,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2021-03-24 10:02:58,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2021-03-24 10:02:58,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:02:58,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2021-03-24 10:02:58,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2021-03-24 10:02:58,548 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) [2021-03-24 10:02:58,549 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) [2021-03-24 10:02:58,549 INFO L185 Difference]: Start difference. First operand has 42 places, 48 transitions, 122 flow. Second operand 3 states and 261 transitions. [2021-03-24 10:02:58,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 190 flow [2021-03-24 10:02:58,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:02:58,551 INFO L241 Difference]: Finished difference. Result has 45 places, 53 transitions, 174 flow [2021-03-24 10:02:58,551 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=45, PETRI_TRANSITIONS=53} [2021-03-24 10:02:58,551 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2021-03-24 10:02:58,552 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 53 transitions, 174 flow [2021-03-24 10:02:58,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,552 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:02:58,552 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, 1, 1, 1] [2021-03-24 10:02:58,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 10:02:58,552 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:02:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:02:58,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2067548804, now seen corresponding path program 2 times [2021-03-24 10:02:58,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:02:58,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619027793] [2021-03-24 10:02:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:02:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:02:58,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:02:58,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:02:58,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619027793] [2021-03-24 10:02:58,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:02:58,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:02:58,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384159385] [2021-03-24 10:02:58,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:02:58,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:02:58,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:02:58,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:02:58,578 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 126 [2021-03-24 10:02:58,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 53 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:02:58,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 126 [2021-03-24 10:02:58,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:02:58,656 INFO L129 PetriNetUnfolder]: 217/498 cut-off events. [2021-03-24 10:02:58,657 INFO L130 PetriNetUnfolder]: For 246/249 co-relation queries the response was YES. [2021-03-24 10:02:58,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 498 events. 217/498 cut-off events. For 246/249 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2080 event pairs, 30 based on Foata normal form. 17/452 useless extension candidates. Maximal degree in co-relation 1082. Up to 143 conditions per place. [2021-03-24 10:02:58,666 INFO L132 encePairwiseOnDemand]: 116/126 looper letters, 22 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2021-03-24 10:02:58,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 272 flow [2021-03-24 10:02:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:02:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:02:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2021-03-24 10:02:58,667 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6878306878306878 [2021-03-24 10:02:58,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2021-03-24 10:02:58,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2021-03-24 10:02:58,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:02:58,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2021-03-24 10:02:58,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,669 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) [2021-03-24 10:02:58,670 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) [2021-03-24 10:02:58,670 INFO L185 Difference]: Start difference. First operand has 45 places, 53 transitions, 174 flow. Second operand 3 states and 260 transitions. [2021-03-24 10:02:58,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 272 flow [2021-03-24 10:02:58,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 10:02:58,676 INFO L241 Difference]: Finished difference. Result has 47 places, 58 transitions, 232 flow [2021-03-24 10:02:58,676 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=47, PETRI_TRANSITIONS=58} [2021-03-24 10:02:58,676 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2021-03-24 10:02:58,677 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 58 transitions, 232 flow [2021-03-24 10:02:58,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,677 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:02:58,677 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, 1, 1, 1] [2021-03-24 10:02:58,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 10:02:58,677 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:02:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:02:58,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2075781436, now seen corresponding path program 3 times [2021-03-24 10:02:58,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:02:58,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752527850] [2021-03-24 10:02:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:02:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:02:58,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:02:58,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:02:58,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752527850] [2021-03-24 10:02:58,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:02:58,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:02:58,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504275495] [2021-03-24 10:02:58,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:02:58,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:02:58,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:02:58,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:02:58,736 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 126 [2021-03-24 10:02:58,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 58 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:02:58,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 126 [2021-03-24 10:02:58,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:02:58,807 INFO L129 PetriNetUnfolder]: 215/485 cut-off events. [2021-03-24 10:02:58,807 INFO L130 PetriNetUnfolder]: For 569/574 co-relation queries the response was YES. [2021-03-24 10:02:58,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1277 conditions, 485 events. 215/485 cut-off events. For 569/574 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2017 event pairs, 32 based on Foata normal form. 18/434 useless extension candidates. Maximal degree in co-relation 1261. Up to 211 conditions per place. [2021-03-24 10:02:58,811 INFO L132 encePairwiseOnDemand]: 117/126 looper letters, 25 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2021-03-24 10:02:58,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 322 flow [2021-03-24 10:02:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:02:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:02:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2021-03-24 10:02:58,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2021-03-24 10:02:58,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2021-03-24 10:02:58,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2021-03-24 10:02:58,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:02:58,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2021-03-24 10:02:58,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,815 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) [2021-03-24 10:02:58,815 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) [2021-03-24 10:02:58,815 INFO L185 Difference]: Start difference. First operand has 47 places, 58 transitions, 232 flow. Second operand 3 states and 259 transitions. [2021-03-24 10:02:58,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 322 flow [2021-03-24 10:02:58,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 10:02:58,820 INFO L241 Difference]: Finished difference. Result has 49 places, 59 transitions, 262 flow [2021-03-24 10:02:58,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=49, PETRI_TRANSITIONS=59} [2021-03-24 10:02:58,821 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2021-03-24 10:02:58,821 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 59 transitions, 262 flow [2021-03-24 10:02:58,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,821 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:02:58,821 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, 1, 1, 1] [2021-03-24 10:02:58,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 10:02:58,822 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:02:58,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:02:58,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2018751236, now seen corresponding path program 4 times [2021-03-24 10:02:58,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:02:58,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047066918] [2021-03-24 10:02:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:02:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:02:58,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:02:58,874 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-24 10:02:58,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:02:58,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:02:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:02:58,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047066918] [2021-03-24 10:02:58,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:02:58,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:02:58,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146275337] [2021-03-24 10:02:58,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:02:58,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:02:58,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:02:58,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:02:58,882 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 126 [2021-03-24 10:02:58,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 59 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:02:58,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 126 [2021-03-24 10:02:58,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:02:58,969 INFO L129 PetriNetUnfolder]: 340/652 cut-off events. [2021-03-24 10:02:58,970 INFO L130 PetriNetUnfolder]: For 368/413 co-relation queries the response was YES. [2021-03-24 10:02:58,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 652 events. 340/652 cut-off events. For 368/413 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2659 event pairs, 42 based on Foata normal form. 6/533 useless extension candidates. Maximal degree in co-relation 1566. Up to 238 conditions per place. [2021-03-24 10:02:58,973 INFO L132 encePairwiseOnDemand]: 115/126 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2021-03-24 10:02:58,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 322 flow [2021-03-24 10:02:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:02:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:02:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2021-03-24 10:02:58,975 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2021-03-24 10:02:58,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2021-03-24 10:02:58,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2021-03-24 10:02:58,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:02:58,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2021-03-24 10:02:58,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2021-03-24 10:02:58,977 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) [2021-03-24 10:02:58,977 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) [2021-03-24 10:02:58,977 INFO L185 Difference]: Start difference. First operand has 49 places, 59 transitions, 262 flow. Second operand 3 states and 261 transitions. [2021-03-24 10:02:58,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 322 flow [2021-03-24 10:02:58,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 10:02:58,982 INFO L241 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2021-03-24 10:02:58,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2021-03-24 10:02:58,982 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2021-03-24 10:02:58,982 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2021-03-24 10:02:58,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:02:58,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 10:02:58,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:02:58 BasicIcfg [2021-03-24 10:02:58,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 10:02:58,988 INFO L168 Benchmark]: Toolchain (without parser) took 2878.55 ms. Allocated memory is still 335.5 MB. Free memory was 298.9 MB in the beginning and 167.4 MB in the end (delta: 131.4 MB). Peak memory consumption was 133.9 MB. Max. memory is 16.0 GB. [2021-03-24 10:02:58,988 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 335.5 MB. Free memory was 316.8 MB in the beginning and 316.7 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:02:58,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.57 ms. Allocated memory is still 335.5 MB. Free memory was 298.7 MB in the beginning and 299.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. [2021-03-24 10:02:58,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.03 ms. Allocated memory is still 335.5 MB. Free memory was 299.8 MB in the beginning and 297.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:02:58,990 INFO L168 Benchmark]: Boogie Preprocessor took 22.47 ms. Allocated memory is still 335.5 MB. Free memory was 297.7 MB in the beginning and 296.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:02:58,992 INFO L168 Benchmark]: RCFGBuilder took 370.52 ms. Allocated memory is still 335.5 MB. Free memory was 296.7 MB in the beginning and 273.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:02:58,992 INFO L168 Benchmark]: TraceAbstraction took 1918.30 ms. Allocated memory is still 335.5 MB. Free memory was 273.6 MB in the beginning and 167.4 MB in the end (delta: 106.2 MB). Peak memory consumption was 108.2 MB. Max. memory is 16.0 GB. [2021-03-24 10:02:58,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 335.5 MB. Free memory was 316.8 MB in the beginning and 316.7 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 521.57 ms. Allocated memory is still 335.5 MB. Free memory was 298.7 MB in the beginning and 299.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.03 ms. Allocated memory is still 335.5 MB. Free memory was 299.8 MB in the beginning and 297.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.47 ms. Allocated memory is still 335.5 MB. Free memory was 297.7 MB in the beginning and 296.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 370.52 ms. Allocated memory is still 335.5 MB. Free memory was 296.7 MB in the beginning and 273.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1918.30 ms. Allocated memory is still 335.5 MB. Free memory was 273.6 MB in the beginning and 167.4 MB in the end (delta: 106.2 MB). Peak memory consumption was 108.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 704.0ms, 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 - 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: 15.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1832.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 515.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 777.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 88 SDtfs, 20 SDslu, 0 SDs, 0 SdLazy, 98 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=5, InterpolantAutomatonStates: 18, 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: 17.5ms SsaConstructionTime, 107.0ms SatisfiabilityAnalysisTime, 231.7ms InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...