/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 10:00:04,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 10:00:04,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 10:00:04,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 10:00:04,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 10:00:04,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 10:00:04,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 10:00:04,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 10:00:04,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 10:00:04,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 10:00:04,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 10:00:04,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 10:00:04,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 10:00:04,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 10:00:04,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 10:00:04,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 10:00:04,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 10:00:04,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 10:00:04,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 10:00:04,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 10:00:04,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 10:00:04,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 10:00:04,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 10:00:04,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 10:00:04,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 10:00:04,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 10:00:04,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 10:00:04,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 10:00:04,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 10:00:04,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 10:00:04,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 10:00:04,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 10:00:04,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 10:00:04,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 10:00:04,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 10:00:04,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 10:00:04,768 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-FA-SemanticLbe.epf [2021-03-11 10:00:04,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 10:00:04,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 10:00:04,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 10:00:04,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 10:00:04,810 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 10:00:04,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 10:00:04,810 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 10:00:04,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 10:00:04,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 10:00:04,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 10:00:04,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 10:00:04,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 10:00:04,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 10:00:04,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 10:00:04,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 10:00:04,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 10:00:04,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 10:00:04,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 10:00:04,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 10:00:04,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 10:00:04,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 10:00:04,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 10:00:04,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 10:00:04,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 10:00:04,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 10:00:04,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 10:00:04,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 10:00:04,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 10:00:04,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 10:00:05,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 10:00:05,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 10:00:05,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 10:00:05,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 10:00:05,166 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 10:00:05,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-11 10:00:05,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/498af4ebe/8ef79c09d860418d81065a51790361e1/FLAG9fc36663a [2021-03-11 10:00:05,834 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 10:00:05,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-11 10:00:05,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/498af4ebe/8ef79c09d860418d81065a51790361e1/FLAG9fc36663a [2021-03-11 10:00:06,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/498af4ebe/8ef79c09d860418d81065a51790361e1 [2021-03-11 10:00:06,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 10:00:06,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 10:00:06,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 10:00:06,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 10:00:06,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 10:00:06,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:06,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c94f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06, skipping insertion in model container [2021-03-11 10:00:06,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:06,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 10:00:06,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 10:00:06,826 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] [2021-03-11 10:00:06,835 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] [2021-03-11 10:00:06,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 10:00:06,846 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 10:00:06,896 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] [2021-03-11 10:00:06,898 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] [2021-03-11 10:00:06,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 10:00:06,956 INFO L208 MainTranslator]: Completed translation [2021-03-11 10:00:06,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06 WrapperNode [2021-03-11 10:00:06,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 10:00:06,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 10:00:06,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 10:00:06,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 10:00:06,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:06,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:07,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 10:00:07,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 10:00:07,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 10:00:07,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 10:00:07,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:07,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:07,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:07,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:07,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:07,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:07,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (1/1) ... [2021-03-11 10:00:07,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 10:00:07,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 10:00:07,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 10:00:07,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 10:00:07,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (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 [2021-03-11 10:00:07,071 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 10:00:07,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 10:00:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 10:00:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 10:00:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 10:00:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 10:00:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 10:00:07,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 10:00:07,074 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 10:00:07,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 10:00:07,338 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-11 10:00:07,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:00:07 BoogieIcfgContainer [2021-03-11 10:00:07,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 10:00:07,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 10:00:07,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 10:00:07,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 10:00:07,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 10:00:06" (1/3) ... [2021-03-11 10:00:07,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0eda32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:00:07, skipping insertion in model container [2021-03-11 10:00:07,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:00:06" (2/3) ... [2021-03-11 10:00:07,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0eda32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:00:07, skipping insertion in model container [2021-03-11 10:00:07,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:00:07" (3/3) ... [2021-03-11 10:00:07,345 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-03-11 10:00:07,358 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 10:00:07,358 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 10:00:07,361 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 10:00:07,362 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 10:00:07,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,385 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,385 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 10:00:07,394 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 10:00:07,408 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 10:00:07,423 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 10:00:07,423 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 10:00:07,423 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 10:00:07,423 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 10:00:07,424 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 10:00:07,424 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 10:00:07,424 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 10:00:07,424 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 10:00:07,433 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 10:00:07,441 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 88 transitions, 181 flow [2021-03-11 10:00:07,444 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 88 transitions, 181 flow [2021-03-11 10:00:07,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2021-03-11 10:00:07,476 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-11 10:00:07,477 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 10:00:07,480 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. [2021-03-11 10:00:07,483 INFO L116 LiptonReduction]: Number of co-enabled transitions 2542 [2021-03-11 10:00:08,687 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-03-11 10:00:08,858 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-03-11 10:00:08,929 INFO L131 LiptonReduction]: Checked pairs total: 4971 [2021-03-11 10:00:08,929 INFO L133 LiptonReduction]: Total number of compositions: 49 [2021-03-11 10:00:08,936 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2021-03-11 10:00:08,950 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 227 states, 223 states have (on average 3.2376681614349776) internal successors, (722), 226 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 223 states have (on average 3.2376681614349776) internal successors, (722), 226 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 10:00:08,958 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:08,958 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:08,959 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:08,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:08,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1213665178, now seen corresponding path program 1 times [2021-03-11 10:00:08,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:08,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261263330] [2021-03-11 10:00:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:09,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:09,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261263330] [2021-03-11 10:00:09,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:09,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 10:00:09,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894854361] [2021-03-11 10:00:09,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 10:00:09,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:09,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 10:00:09,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 10:00:09,096 INFO L87 Difference]: Start difference. First operand has 227 states, 223 states have (on average 3.2376681614349776) internal successors, (722), 226 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:09,112 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2021-03-11 10:00:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 10:00:09,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-03-11 10:00:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:09,121 INFO L225 Difference]: With dead ends: 198 [2021-03-11 10:00:09,121 INFO L226 Difference]: Without dead ends: 198 [2021-03-11 10:00:09,122 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 10:00:09,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-03-11 10:00:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-03-11 10:00:09,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.7106598984771573) internal successors, (534), 197 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2021-03-11 10:00:09,161 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2021-03-11 10:00:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:09,162 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2021-03-11 10:00:09,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2021-03-11 10:00:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 10:00:09,163 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:09,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:09,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 10:00:09,163 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:09,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:09,164 INFO L82 PathProgramCache]: Analyzing trace with hash -173899206, now seen corresponding path program 1 times [2021-03-11 10:00:09,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:09,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310454880] [2021-03-11 10:00:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:09,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 10:00:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:09,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310454880] [2021-03-11 10:00:09,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:09,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 10:00:09,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579060850] [2021-03-11 10:00:09,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 10:00:09,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:09,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 10:00:09,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,220 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:09,255 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2021-03-11 10:00:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 10:00:09,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 10:00:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:09,261 INFO L225 Difference]: With dead ends: 362 [2021-03-11 10:00:09,261 INFO L226 Difference]: Without dead ends: 362 [2021-03-11 10:00:09,261 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-03-11 10:00:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2021-03-11 10:00:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.6772727272727272) internal successors, (589), 220 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2021-03-11 10:00:09,303 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2021-03-11 10:00:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:09,303 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2021-03-11 10:00:09,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2021-03-11 10:00:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 10:00:09,304 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:09,304 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:09,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 10:00:09,305 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:09,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:09,305 INFO L82 PathProgramCache]: Analyzing trace with hash -135071945, now seen corresponding path program 1 times [2021-03-11 10:00:09,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:09,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761111436] [2021-03-11 10:00:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:09,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 10:00:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:09,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761111436] [2021-03-11 10:00:09,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:09,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 10:00:09,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979674958] [2021-03-11 10:00:09,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 10:00:09,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:09,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 10:00:09,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,362 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:09,383 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2021-03-11 10:00:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 10:00:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 10:00:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:09,389 INFO L225 Difference]: With dead ends: 348 [2021-03-11 10:00:09,390 INFO L226 Difference]: Without dead ends: 348 [2021-03-11 10:00:09,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-03-11 10:00:09,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2021-03-11 10:00:09,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 218 states have (on average 2.5688073394495414) internal successors, (560), 217 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2021-03-11 10:00:09,402 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2021-03-11 10:00:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:09,402 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2021-03-11 10:00:09,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2021-03-11 10:00:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 10:00:09,414 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:09,414 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:09,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 10:00:09,415 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:09,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:09,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2005438099, now seen corresponding path program 1 times [2021-03-11 10:00:09,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:09,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847262366] [2021-03-11 10:00:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:09,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 10:00:09,474 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 10:00:09,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:09,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847262366] [2021-03-11 10:00:09,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:09,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 10:00:09,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636014559] [2021-03-11 10:00:09,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 10:00:09,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:09,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 10:00:09,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,478 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:09,504 INFO L93 Difference]: Finished difference Result 220 states and 542 transitions. [2021-03-11 10:00:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 10:00:09,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 10:00:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:09,506 INFO L225 Difference]: With dead ends: 220 [2021-03-11 10:00:09,506 INFO L226 Difference]: Without dead ends: 220 [2021-03-11 10:00:09,506 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-03-11 10:00:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-03-11 10:00:09,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 220 states have (on average 2.463636363636364) internal successors, (542), 219 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 542 transitions. [2021-03-11 10:00:09,515 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 542 transitions. Word has length 19 [2021-03-11 10:00:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:09,516 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 542 transitions. [2021-03-11 10:00:09,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 542 transitions. [2021-03-11 10:00:09,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 10:00:09,516 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:09,517 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:09,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 10:00:09,517 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:09,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1411874251, now seen corresponding path program 1 times [2021-03-11 10:00:09,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:09,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784512876] [2021-03-11 10:00:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:09,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 10:00:09,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:09,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784512876] [2021-03-11 10:00:09,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:09,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 10:00:09,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639199606] [2021-03-11 10:00:09,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 10:00:09,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:09,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 10:00:09,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,554 INFO L87 Difference]: Start difference. First operand 220 states and 542 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:09,587 INFO L93 Difference]: Finished difference Result 240 states and 579 transitions. [2021-03-11 10:00:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 10:00:09,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 10:00:09,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:09,591 INFO L225 Difference]: With dead ends: 240 [2021-03-11 10:00:09,591 INFO L226 Difference]: Without dead ends: 240 [2021-03-11 10:00:09,596 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-03-11 10:00:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 230. [2021-03-11 10:00:09,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 230 states have (on average 2.4217391304347826) internal successors, (557), 229 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 557 transitions. [2021-03-11 10:00:09,610 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 557 transitions. Word has length 19 [2021-03-11 10:00:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:09,611 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 557 transitions. [2021-03-11 10:00:09,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 557 transitions. [2021-03-11 10:00:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 10:00:09,612 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:09,612 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:09,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 10:00:09,612 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2058721999, now seen corresponding path program 2 times [2021-03-11 10:00:09,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:09,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590927640] [2021-03-11 10:00:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:09,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 10:00:09,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:09,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590927640] [2021-03-11 10:00:09,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:09,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 10:00:09,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357021311] [2021-03-11 10:00:09,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 10:00:09,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 10:00:09,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,639 INFO L87 Difference]: Start difference. First operand 230 states and 557 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:09,661 INFO L93 Difference]: Finished difference Result 228 states and 541 transitions. [2021-03-11 10:00:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 10:00:09,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 10:00:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:09,663 INFO L225 Difference]: With dead ends: 228 [2021-03-11 10:00:09,663 INFO L226 Difference]: Without dead ends: 228 [2021-03-11 10:00:09,663 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-03-11 10:00:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-03-11 10:00:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 228 states have (on average 2.3728070175438596) internal successors, (541), 227 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 541 transitions. [2021-03-11 10:00:09,671 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 541 transitions. Word has length 19 [2021-03-11 10:00:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:09,671 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 541 transitions. [2021-03-11 10:00:09,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,671 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 541 transitions. [2021-03-11 10:00:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-03-11 10:00:09,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 10:00:09,672 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 10:00:09,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 10:00:09,672 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 10:00:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 10:00:09,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1254849083, now seen corresponding path program 3 times [2021-03-11 10:00:09,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 10:00:09,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715923386] [2021-03-11 10:00:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 10:00:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 10:00:09,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 10:00:09,709 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 10:00:09,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 10:00:09,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 10:00:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 10:00:09,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715923386] [2021-03-11 10:00:09,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 10:00:09,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 10:00:09,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233464740] [2021-03-11 10:00:09,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 10:00:09,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 10:00:09,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 10:00:09,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,712 INFO L87 Difference]: Start difference. First operand 228 states and 541 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 10:00:09,746 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2021-03-11 10:00:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 10:00:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-03-11 10:00:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 10:00:09,747 INFO L225 Difference]: With dead ends: 194 [2021-03-11 10:00:09,747 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 10:00:09,747 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 10:00:09,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 10:00:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 10:00:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 10:00:09,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-03-11 10:00:09,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 10:00:09,748 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 10:00:09,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 10:00:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 10:00:09,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 10:00:09,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 10:00:09,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:00:09 BasicIcfg [2021-03-11 10:00:09,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 10:00:09,753 INFO L168 Benchmark]: Toolchain (without parser) took 3508.55 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 235.0 MB in the beginning and 258.2 MB in the end (delta: -23.2 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:09,755 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 10:00:09,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.64 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.5 MB in the beginning and 306.6 MB in the end (delta: -72.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:09,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.39 ms. Allocated memory is still 341.8 MB. Free memory was 306.6 MB in the beginning and 304.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:09,758 INFO L168 Benchmark]: Boogie Preprocessor took 19.12 ms. Allocated memory is still 341.8 MB. Free memory was 304.5 MB in the beginning and 303.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:09,758 INFO L168 Benchmark]: RCFGBuilder took 315.84 ms. Allocated memory is still 341.8 MB. Free memory was 303.0 MB in the beginning and 281.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:09,760 INFO L168 Benchmark]: TraceAbstraction took 2411.56 ms. Allocated memory is still 341.8 MB. Free memory was 281.4 MB in the beginning and 258.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.0 GB. [2021-03-11 10:00:09,763 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 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 456.64 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.5 MB in the beginning and 306.6 MB in the end (delta: -72.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.39 ms. Allocated memory is still 341.8 MB. Free memory was 306.6 MB in the beginning and 304.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.12 ms. Allocated memory is still 341.8 MB. Free memory was 304.5 MB in the beginning and 303.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 315.84 ms. Allocated memory is still 341.8 MB. Free memory was 303.0 MB in the beginning and 281.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2411.56 ms. Allocated memory is still 341.8 MB. Free memory was 281.4 MB in the beginning and 258.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1486.1ms, 68 PlacesBefore, 35 PlacesAfterwards, 88 TransitionsBefore, 51 TransitionsAfterwards, 2542 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 49 TotalNumberOfCompositions, 4971 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2281, positive: 2137, positive conditional: 0, positive unconditional: 2137, negative: 144, negative conditional: 0, negative unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1281, positive: 1254, positive conditional: 0, positive unconditional: 1254, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1281, positive: 1212, positive conditional: 0, positive unconditional: 1212, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 69, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 134, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2281, positive: 883, positive conditional: 0, positive unconditional: 883, negative: 117, negative conditional: 0, negative unconditional: 117, unknown: 1281, unknown conditional: 0, unknown unconditional: 1281] , Statistics on independence cache: Total cache size (in pairs): 203, Positive cache size: 181, Positive conditional cache size: 0, Positive unconditional cache size: 181, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2328.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 16.6ms, AutomataDifference: 238.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1526.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 373 SDtfs, 154 SDslu, 134 SDs, 0 SdLazy, 98 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 114.7ms AutomataMinimizationTime, 7 MinimizatonAttempts, 281 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.5ms SsaConstructionTime, 54.0ms SatisfiabilityAnalysisTime, 211.4ms InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...