/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 09:43:52,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 09:43:52,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 09:43:52,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 09:43:52,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 09:43:52,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 09:43:52,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 09:43:52,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 09:43:52,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 09:43:52,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 09:43:52,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 09:43:52,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 09:43:52,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 09:43:52,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 09:43:52,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 09:43:52,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 09:43:52,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 09:43:52,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 09:43:52,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 09:43:52,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 09:43:52,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 09:43:52,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 09:43:52,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 09:43:52,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 09:43:52,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 09:43:52,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 09:43:52,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 09:43:52,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 09:43:52,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 09:43:52,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 09:43:52,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 09:43:52,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 09:43:52,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 09:43:52,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 09:43:52,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 09:43:52,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 09:43:52,909 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-NoLbe-New_States.epf [2020-11-12 09:43:52,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 09:43:52,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 09:43:52,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 09:43:52,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 09:43:52,975 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 09:43:52,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 09:43:52,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 09:43:52,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 09:43:52,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 09:43:52,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 09:43:52,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 09:43:52,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 09:43:52,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 09:43:52,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 09:43:52,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 09:43:52,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 09:43:52,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 09:43:52,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 09:43:52,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 09:43:52,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 09:43:52,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 09:43:52,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 09:43:52,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 09:43:52,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 09:43:52,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 09:43:52,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 09:43:52,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 09:43:52,982 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 09:43:52,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 09:43:52,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 09:43:52,982 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 09:43:53,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 09:43:53,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 09:43:53,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 09:43:53,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 09:43:53,456 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 09:43:53,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-11-12 09:43:53,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c29e37c37/87e0e9c842504386a9ce9b3c3efbec8b/FLAGbe1d4c11a [2020-11-12 09:43:54,326 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 09:43:54,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-11-12 09:43:54,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c29e37c37/87e0e9c842504386a9ce9b3c3efbec8b/FLAGbe1d4c11a [2020-11-12 09:43:54,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c29e37c37/87e0e9c842504386a9ce9b3c3efbec8b [2020-11-12 09:43:54,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 09:43:54,553 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 09:43:54,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 09:43:54,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 09:43:54,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 09:43:54,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 09:43:54" (1/1) ... [2020-11-12 09:43:54,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b21d8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:54, skipping insertion in model container [2020-11-12 09:43:54,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 09:43:54" (1/1) ... [2020-11-12 09:43:54,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 09:43:54,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 09:43:54,819 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-12 09:43:55,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 09:43:55,095 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 09:43:55,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-12 09:43:55,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 09:43:55,301 INFO L208 MainTranslator]: Completed translation [2020-11-12 09:43:55,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55 WrapperNode [2020-11-12 09:43:55,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 09:43:55,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 09:43:55,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 09:43:55,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 09:43:55,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 09:43:55,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 09:43:55,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 09:43:55,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 09:43:55,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (1/1) ... [2020-11-12 09:43:55,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 09:43:55,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 09:43:55,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 09:43:55,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 09:43:55,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (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 [2020-11-12 09:43:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-12 09:43:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-11-12 09:43:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-11-12 09:43:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-12 09:43:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-12 09:43:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 09:43:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 09:43:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 09:43:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 09:43:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 09:43:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 09:43:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 09:43:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 09:43:55,546 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 09:43:56,135 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 09:43:56,136 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 09:43:56,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 09:43:56 BoogieIcfgContainer [2020-11-12 09:43:56,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 09:43:56,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 09:43:56,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 09:43:56,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 09:43:56,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 09:43:54" (1/3) ... [2020-11-12 09:43:56,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1268b0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 09:43:56, skipping insertion in model container [2020-11-12 09:43:56,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 09:43:55" (2/3) ... [2020-11-12 09:43:56,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1268b0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 09:43:56, skipping insertion in model container [2020-11-12 09:43:56,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 09:43:56" (3/3) ... [2020-11-12 09:43:56,150 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-11-12 09:43:56,169 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 09:43:56,169 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 09:43:56,173 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-12 09:43:56,174 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 09:43:56,219 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,219 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,229 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,229 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,230 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,230 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,230 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,233 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,233 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,248 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,248 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,248 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,248 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,248 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,252 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,252 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,252 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,252 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,253 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 09:43:56,280 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-12 09:43:56,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-12 09:43:56,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 09:43:56,317 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 09:43:56,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 09:43:56,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 09:43:56,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 09:43:56,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 09:43:56,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 09:43:56,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 09:43:56,331 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 78 transitions, 178 flow [2020-11-12 09:43:56,411 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1046 states, 1042 states have (on average 2.8579654510556622) internal successors, (2978), 1045 states have internal predecessors, (2978), 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) [2020-11-12 09:43:56,913 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 499ms [2020-11-12 09:43:56,917 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 1046 states, 1042 states have (on average 2.8579654510556622) internal successors, (2978), 1045 states have internal predecessors, (2978), 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) [2020-11-12 09:43:56,957 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 12750 states, 11190 states have (on average 1.435567470956211) internal successors, (16064), 12749 states have internal predecessors, (16064), 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) [2020-11-12 09:43:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 12750 states, 11190 states have (on average 1.435567470956211) internal successors, (16064), 12749 states have internal predecessors, (16064), 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) [2020-11-12 09:43:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-12 09:43:56,992 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:56,993 INFO L494 BasicCegarLoop]: 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, 1, 1, 1] [2020-11-12 09:43:56,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:57,000 INFO L82 PathProgramCache]: Analyzing trace with hash -868190076, now seen corresponding path program 1 times [2020-11-12 09:43:57,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:57,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645120720] [2020-11-12 09:43:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:57,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645120720] [2020-11-12 09:43:57,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:43:57,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 09:43:57,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890468183] [2020-11-12 09:43:57,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-12 09:43:57,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:57,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-12 09:43:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 09:43:57,273 INFO L87 Difference]: Start difference. First operand has 12750 states, 11190 states have (on average 1.435567470956211) internal successors, (16064), 12749 states have internal predecessors, (16064), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2020-11-12 09:43:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:57,317 INFO L93 Difference]: Finished difference Result 1920 states and 2388 transitions. [2020-11-12 09:43:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-12 09:43:57,320 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2020-11-12 09:43:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:57,346 INFO L225 Difference]: With dead ends: 1920 [2020-11-12 09:43:57,346 INFO L226 Difference]: Without dead ends: 1275 [2020-11-12 09:43:57,348 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 09:43:57,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-11-12 09:43:57,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1206. [2020-11-12 09:43:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1140 states have (on average 1.3140350877192983) internal successors, (1498), 1205 states have internal predecessors, (1498), 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) [2020-11-12 09:43:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1498 transitions. [2020-11-12 09:43:57,494 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1498 transitions. Word has length 28 [2020-11-12 09:43:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:57,495 INFO L481 AbstractCegarLoop]: Abstraction has 1206 states and 1498 transitions. [2020-11-12 09:43:57,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2020-11-12 09:43:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1498 transitions. [2020-11-12 09:43:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-12 09:43:57,504 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:57,505 INFO L494 BasicCegarLoop]: 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, 1, 1, 1] [2020-11-12 09:43:57,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 09:43:57,506 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:57,508 INFO L82 PathProgramCache]: Analyzing trace with hash -839560925, now seen corresponding path program 1 times [2020-11-12 09:43:57,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:57,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71894643] [2020-11-12 09:43:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:57,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71894643] [2020-11-12 09:43:57,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:43:57,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 09:43:57,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361982886] [2020-11-12 09:43:57,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 09:43:57,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 09:43:57,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 09:43:57,731 INFO L87 Difference]: Start difference. First operand 1206 states and 1498 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2020-11-12 09:43:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:57,763 INFO L93 Difference]: Finished difference Result 993 states and 1225 transitions. [2020-11-12 09:43:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 09:43:57,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2020-11-12 09:43:57,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:57,768 INFO L225 Difference]: With dead ends: 993 [2020-11-12 09:43:57,768 INFO L226 Difference]: Without dead ends: 762 [2020-11-12 09:43:57,769 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 09:43:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-11-12 09:43:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 747. [2020-11-12 09:43:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 705 states have (on average 1.175886524822695) internal successors, (829), 746 states have internal predecessors, (829), 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) [2020-11-12 09:43:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 829 transitions. [2020-11-12 09:43:57,791 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 829 transitions. Word has length 28 [2020-11-12 09:43:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:57,791 INFO L481 AbstractCegarLoop]: Abstraction has 747 states and 829 transitions. [2020-11-12 09:43:57,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2020-11-12 09:43:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 829 transitions. [2020-11-12 09:43:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-12 09:43:57,793 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:57,793 INFO L494 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:57,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 09:43:57,794 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:57,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:57,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2116818774, now seen corresponding path program 1 times [2020-11-12 09:43:57,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:57,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840637428] [2020-11-12 09:43:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:57,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840637428] [2020-11-12 09:43:57,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:43:57,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 09:43:57,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656929449] [2020-11-12 09:43:57,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 09:43:57,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:57,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 09:43:57,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 09:43:57,891 INFO L87 Difference]: Start difference. First operand 747 states and 829 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2020-11-12 09:43:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:57,928 INFO L93 Difference]: Finished difference Result 537 states and 586 transitions. [2020-11-12 09:43:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 09:43:57,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2020-11-12 09:43:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:57,931 INFO L225 Difference]: With dead ends: 537 [2020-11-12 09:43:57,934 INFO L226 Difference]: Without dead ends: 343 [2020-11-12 09:43:57,934 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 09:43:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-11-12 09:43:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 325. [2020-11-12 09:43:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 307 states have (on average 1.1726384364820848) internal successors, (360), 324 states have internal predecessors, (360), 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) [2020-11-12 09:43:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 360 transitions. [2020-11-12 09:43:57,946 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 360 transitions. Word has length 31 [2020-11-12 09:43:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:57,947 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 360 transitions. [2020-11-12 09:43:57,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2020-11-12 09:43:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 360 transitions. [2020-11-12 09:43:57,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-12 09:43:57,950 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:57,950 INFO L494 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:57,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 09:43:57,951 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:57,952 INFO L82 PathProgramCache]: Analyzing trace with hash 706874166, now seen corresponding path program 1 times [2020-11-12 09:43:57,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:57,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492362372] [2020-11-12 09:43:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:58,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492362372] [2020-11-12 09:43:58,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:43:58,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 09:43:58,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352761735] [2020-11-12 09:43:58,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 09:43:58,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:58,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 09:43:58,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-12 09:43:58,105 INFO L87 Difference]: Start difference. First operand 325 states and 360 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2020-11-12 09:43:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:58,174 INFO L93 Difference]: Finished difference Result 349 states and 381 transitions. [2020-11-12 09:43:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 09:43:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2020-11-12 09:43:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:58,176 INFO L225 Difference]: With dead ends: 349 [2020-11-12 09:43:58,176 INFO L226 Difference]: Without dead ends: 264 [2020-11-12 09:43:58,177 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-12 09:43:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-11-12 09:43:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2020-11-12 09:43:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 246 states have (on average 1.1422764227642277) internal successors, (281), 263 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 09:43:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 281 transitions. [2020-11-12 09:43:58,185 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 281 transitions. Word has length 38 [2020-11-12 09:43:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:58,185 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 281 transitions. [2020-11-12 09:43:58,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2020-11-12 09:43:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 281 transitions. [2020-11-12 09:43:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-12 09:43:58,187 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 09:43:58,187 INFO L494 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 09:43:58,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 09:43:58,187 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 09:43:58,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 09:43:58,188 INFO L82 PathProgramCache]: Analyzing trace with hash 67921270, now seen corresponding path program 1 times [2020-11-12 09:43:58,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 09:43:58,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412037890] [2020-11-12 09:43:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 09:43:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 09:43:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 09:43:58,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412037890] [2020-11-12 09:43:58,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 09:43:58,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 09:43:58,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503358106] [2020-11-12 09:43:58,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 09:43:58,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 09:43:58,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 09:43:58,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-12 09:43:58,265 INFO L87 Difference]: Start difference. First operand 264 states and 281 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2020-11-12 09:43:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 09:43:58,324 INFO L93 Difference]: Finished difference Result 120 states and 119 transitions. [2020-11-12 09:43:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 09:43:58,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2020-11-12 09:43:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 09:43:58,324 INFO L225 Difference]: With dead ends: 120 [2020-11-12 09:43:58,325 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 09:43:58,325 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-12 09:43:58,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 09:43:58,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 09:43:58,326 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) [2020-11-12 09:43:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 09:43:58,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-11-12 09:43:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 09:43:58,326 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 09:43:58,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2020-11-12 09:43:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 09:43:58,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 09:43:58,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 09:43:58,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 09:43:58 BasicIcfg [2020-11-12 09:43:58,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 09:43:58,335 INFO L168 Benchmark]: Toolchain (without parser) took 3785.48 ms. Allocated memory was 302.0 MB in the beginning and 364.9 MB in the end (delta: 62.9 MB). Free memory was 273.5 MB in the beginning and 318.6 MB in the end (delta: -45.2 MB). Peak memory consumption was 83.4 MB. Max. memory is 16.0 GB. [2020-11-12 09:43:58,336 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 272.3 MB in the end (delta: 76.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 09:43:58,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.8 MB in the beginning and 264.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2020-11-12 09:43:58,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.34 ms. Allocated memory is still 302.0 MB. Free memory was 264.5 MB in the beginning and 262.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 09:43:58,339 INFO L168 Benchmark]: Boogie Preprocessor took 59.25 ms. Allocated memory is still 302.0 MB. Free memory was 262.7 MB in the beginning and 261.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 09:43:58,339 INFO L168 Benchmark]: RCFGBuilder took 682.95 ms. Allocated memory is still 302.0 MB. Free memory was 261.2 MB in the beginning and 275.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. [2020-11-12 09:43:58,341 INFO L168 Benchmark]: TraceAbstraction took 2191.16 ms. Allocated memory was 302.0 MB in the beginning and 364.9 MB in the end (delta: 62.9 MB). Free memory was 274.6 MB in the beginning and 318.6 MB in the end (delta: -44.0 MB). Peak memory consumption was 83.5 MB. Max. memory is 16.0 GB. [2020-11-12 09:43:58,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 272.3 MB in the end (delta: 76.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 747.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.8 MB in the beginning and 264.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 90.34 ms. Allocated memory is still 302.0 MB. Free memory was 264.5 MB in the beginning and 262.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 59.25 ms. Allocated memory is still 302.0 MB. Free memory was 262.7 MB in the beginning and 261.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 682.95 ms. Allocated memory is still 302.0 MB. Free memory was 261.2 MB in the beginning and 275.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2191.16 ms. Allocated memory was 302.0 MB in the beginning and 364.9 MB in the end (delta: 62.9 MB). Free memory was 274.6 MB in the beginning and 318.6 MB in the end (delta: -44.0 MB). Peak memory consumption was 83.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 288 SDtfs, 87 SDslu, 332 SDs, 0 SdLazy, 61 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12750occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 102 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 7874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...