/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 14:31:08,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 14:31:08,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 14:31:08,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 14:31:08,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 14:31:08,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 14:31:08,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 14:31:08,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 14:31:08,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 14:31:08,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 14:31:08,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 14:31:08,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 14:31:08,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 14:31:08,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 14:31:08,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 14:31:08,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 14:31:08,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 14:31:08,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 14:31:08,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 14:31:08,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 14:31:08,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 14:31:08,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 14:31:08,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 14:31:08,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 14:31:08,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 14:31:08,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 14:31:08,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 14:31:08,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 14:31:08,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 14:31:08,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 14:31:08,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 14:31:08,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 14:31:08,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 14:31:08,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 14:31:08,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 14:31:08,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 14:31:08,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 14:31:08,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 14:31:08,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 14:31:08,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 14:31:08,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 14:31:08,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 14:31:08,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 14:31:08,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 14:31:08,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 14:31:08,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 14:31:08,563 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 14:31:08,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 14:31:08,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 14:31:08,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 14:31:08,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 14:31:08,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 14:31:08,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 14:31:08,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 14:31:08,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 14:31:08,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 14:31:08,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 14:31:08,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 14:31:08,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 14:31:08,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 14:31:08,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 14:31:08,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 14:31:08,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 14:31:08,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 14:31:08,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 14:31:08,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 14:31:08,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 14:31:08,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 14:31:08,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 14:31:08,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 14:31:08,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 14:31:08,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 14:31:08,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 14:31:08,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 14:31:08,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 14:31:08,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 14:31:08,901 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 14:31:08,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-04-17 14:31:08,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19dbc7e9e/7e80c31963174bd2b5bec6f79edd3251/FLAG37820cebb [2020-04-17 14:31:09,608 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 14:31:09,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-04-17 14:31:09,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19dbc7e9e/7e80c31963174bd2b5bec6f79edd3251/FLAG37820cebb [2020-04-17 14:31:09,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19dbc7e9e/7e80c31963174bd2b5bec6f79edd3251 [2020-04-17 14:31:09,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 14:31:09,877 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 14:31:09,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 14:31:09,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 14:31:09,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 14:31:09,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 02:31:09" (1/1) ... [2020-04-17 14:31:09,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36972d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:09, skipping insertion in model container [2020-04-17 14:31:09,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 02:31:09" (1/1) ... [2020-04-17 14:31:09,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 14:31:09,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 14:31:10,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 14:31:10,482 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 14:31:10,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 14:31:10,626 INFO L208 MainTranslator]: Completed translation [2020-04-17 14:31:10,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10 WrapperNode [2020-04-17 14:31:10,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 14:31:10,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 14:31:10,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 14:31:10,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 14:31:10,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 14:31:10,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 14:31:10,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 14:31:10,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 14:31:10,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (1/1) ... [2020-04-17 14:31:10,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 14:31:10,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 14:31:10,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 14:31:10,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 14:31:10,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (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 [2020-04-17 14:31:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 14:31:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 14:31:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-04-17 14:31:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-04-17 14:31:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 14:31:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 14:31:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 14:31:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 14:31:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-04-17 14:31:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-04-17 14:31:10,792 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 14:31:11,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 14:31:11,343 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-17 14:31:11,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 02:31:11 BoogieIcfgContainer [2020-04-17 14:31:11,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 14:31:11,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 14:31:11,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 14:31:11,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 14:31:11,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 02:31:09" (1/3) ... [2020-04-17 14:31:11,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b208d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 02:31:11, skipping insertion in model container [2020-04-17 14:31:11,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:31:10" (2/3) ... [2020-04-17 14:31:11,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b208d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 02:31:11, skipping insertion in model container [2020-04-17 14:31:11,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 02:31:11" (3/3) ... [2020-04-17 14:31:11,356 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-04-17 14:31:11,368 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 14:31:11,368 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 14:31:11,376 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 14:31:11,377 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 14:31:11,407 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,407 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,407 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,408 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,408 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,408 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,409 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,409 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,409 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,409 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,410 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,410 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,410 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,411 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,411 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,411 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,411 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,412 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,412 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,412 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,412 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,413 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,413 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,413 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,414 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,414 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,414 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,414 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,415 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,415 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,415 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,415 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,416 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,416 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,416 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,416 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,416 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,417 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,417 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,417 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,417 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,418 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,422 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,422 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,422 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,423 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,423 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,423 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,425 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,426 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,426 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,426 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,426 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,426 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,427 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,430 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,430 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,430 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,430 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,430 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,431 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,433 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,433 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,434 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,434 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,434 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,434 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,434 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:31:11,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-17 14:31:11,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 14:31:11,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 14:31:11,498 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 14:31:11,498 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 14:31:11,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 14:31:11,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 14:31:11,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 14:31:11,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 14:31:11,518 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 102 transitions, 272 flow [2020-04-17 14:31:11,520 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-04-17 14:31:11,585 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-04-17 14:31:11,585 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-04-17 14:31:11,593 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 329 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-04-17 14:31:11,599 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-04-17 14:31:11,630 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-04-17 14:31:11,630 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-04-17 14:31:11,632 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 329 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-04-17 14:31:11,649 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2626 [2020-04-17 14:31:11,650 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 14:31:13,577 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-04-17 14:31:13,683 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-04-17 14:31:13,801 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10426 [2020-04-17 14:31:13,802 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-04-17 14:31:13,805 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 58 transitions, 184 flow [2020-04-17 14:31:14,227 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5381 states. [2020-04-17 14:31:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states. [2020-04-17 14:31:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 14:31:14,238 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:31:14,239 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:31:14,240 INFO L427 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:31:14,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:31:14,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2129852361, now seen corresponding path program 1 times [2020-04-17 14:31:14,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:31:14,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974234085] [2020-04-17 14:31:14,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:31:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:31:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:31:14,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974234085] [2020-04-17 14:31:14,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:31:14,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 14:31:14,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554071840] [2020-04-17 14:31:14,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 14:31:14,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:31:14,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 14:31:14,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 14:31:14,572 INFO L87 Difference]: Start difference. First operand 5381 states. Second operand 4 states. [2020-04-17 14:31:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:31:14,922 INFO L93 Difference]: Finished difference Result 10812 states and 36249 transitions. [2020-04-17 14:31:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 14:31:14,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-17 14:31:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:31:15,060 INFO L225 Difference]: With dead ends: 10812 [2020-04-17 14:31:15,060 INFO L226 Difference]: Without dead ends: 7730 [2020-04-17 14:31:15,062 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 14:31:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7730 states. [2020-04-17 14:31:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7730 to 5052. [2020-04-17 14:31:15,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5052 states. [2020-04-17 14:31:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 17159 transitions. [2020-04-17 14:31:15,420 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 17159 transitions. Word has length 8 [2020-04-17 14:31:15,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:31:15,420 INFO L479 AbstractCegarLoop]: Abstraction has 5052 states and 17159 transitions. [2020-04-17 14:31:15,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 14:31:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 17159 transitions. [2020-04-17 14:31:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 14:31:15,424 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:31:15,424 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:31:15,424 INFO L427 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:31:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:31:15,425 INFO L82 PathProgramCache]: Analyzing trace with hash 156591844, now seen corresponding path program 1 times [2020-04-17 14:31:15,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:31:15,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852036785] [2020-04-17 14:31:15,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:31:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:31:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:31:15,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852036785] [2020-04-17 14:31:15,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:31:15,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 14:31:15,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423515240] [2020-04-17 14:31:15,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:31:15,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:31:15,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:31:15,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:31:15,553 INFO L87 Difference]: Start difference. First operand 5052 states and 17159 transitions. Second operand 3 states. [2020-04-17 14:31:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:31:15,672 INFO L93 Difference]: Finished difference Result 4317 states and 12958 transitions. [2020-04-17 14:31:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:31:15,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 14:31:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:31:15,713 INFO L225 Difference]: With dead ends: 4317 [2020-04-17 14:31:15,713 INFO L226 Difference]: Without dead ends: 4275 [2020-04-17 14:31:15,715 INFO L678 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 [2020-04-17 14:31:15,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2020-04-17 14:31:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4275. [2020-04-17 14:31:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4275 states. [2020-04-17 14:31:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 12848 transitions. [2020-04-17 14:31:15,945 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 12848 transitions. Word has length 10 [2020-04-17 14:31:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:31:15,945 INFO L479 AbstractCegarLoop]: Abstraction has 4275 states and 12848 transitions. [2020-04-17 14:31:15,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:31:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 12848 transitions. [2020-04-17 14:31:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 14:31:15,949 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:31:15,949 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:31:15,949 INFO L427 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:31:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:31:15,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1911303952, now seen corresponding path program 2 times [2020-04-17 14:31:15,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:31:15,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461108408] [2020-04-17 14:31:15,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:31:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:31:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:31:16,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461108408] [2020-04-17 14:31:16,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:31:16,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 14:31:16,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656029755] [2020-04-17 14:31:16,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 14:31:16,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:31:16,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 14:31:16,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 14:31:16,032 INFO L87 Difference]: Start difference. First operand 4275 states and 12848 transitions. Second operand 4 states. [2020-04-17 14:31:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:31:16,114 INFO L93 Difference]: Finished difference Result 2906 states and 7004 transitions. [2020-04-17 14:31:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 14:31:16,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 14:31:16,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:31:16,146 INFO L225 Difference]: With dead ends: 2906 [2020-04-17 14:31:16,147 INFO L226 Difference]: Without dead ends: 2798 [2020-04-17 14:31:16,147 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 14:31:16,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2020-04-17 14:31:16,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2390. [2020-04-17 14:31:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2390 states. [2020-04-17 14:31:16,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 5909 transitions. [2020-04-17 14:31:16,227 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 5909 transitions. Word has length 10 [2020-04-17 14:31:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:31:16,228 INFO L479 AbstractCegarLoop]: Abstraction has 2390 states and 5909 transitions. [2020-04-17 14:31:16,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 14:31:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 5909 transitions. [2020-04-17 14:31:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 14:31:16,234 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:31:16,234 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:31:16,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:31:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:31:16,235 INFO L82 PathProgramCache]: Analyzing trace with hash -412348577, now seen corresponding path program 1 times [2020-04-17 14:31:16,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:31:16,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408713989] [2020-04-17 14:31:16,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:31:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:31:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:31:16,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408713989] [2020-04-17 14:31:16,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:31:16,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 14:31:16,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288992401] [2020-04-17 14:31:16,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 14:31:16,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:31:16,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 14:31:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 14:31:16,346 INFO L87 Difference]: Start difference. First operand 2390 states and 5909 transitions. Second operand 4 states. [2020-04-17 14:31:16,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:31:16,456 INFO L93 Difference]: Finished difference Result 2639 states and 6454 transitions. [2020-04-17 14:31:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 14:31:16,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 14:31:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:31:16,481 INFO L225 Difference]: With dead ends: 2639 [2020-04-17 14:31:16,482 INFO L226 Difference]: Without dead ends: 1900 [2020-04-17 14:31:16,484 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 14:31:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-04-17 14:31:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1546. [2020-04-17 14:31:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-04-17 14:31:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 3824 transitions. [2020-04-17 14:31:16,552 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 3824 transitions. Word has length 12 [2020-04-17 14:31:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:31:16,555 INFO L479 AbstractCegarLoop]: Abstraction has 1546 states and 3824 transitions. [2020-04-17 14:31:16,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 14:31:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 3824 transitions. [2020-04-17 14:31:16,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 14:31:16,559 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:31:16,559 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:31:16,559 INFO L427 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:31:16,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:31:16,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1963403643, now seen corresponding path program 1 times [2020-04-17 14:31:16,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:31:16,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428942077] [2020-04-17 14:31:16,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:31:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:31:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:31:16,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428942077] [2020-04-17 14:31:16,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:31:16,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 14:31:16,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492379509] [2020-04-17 14:31:16,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 14:31:16,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:31:16,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 14:31:16,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 14:31:16,647 INFO L87 Difference]: Start difference. First operand 1546 states and 3824 transitions. Second operand 6 states. [2020-04-17 14:31:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:31:16,747 INFO L93 Difference]: Finished difference Result 1795 states and 4395 transitions. [2020-04-17 14:31:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 14:31:16,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-04-17 14:31:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:31:16,753 INFO L225 Difference]: With dead ends: 1795 [2020-04-17 14:31:16,753 INFO L226 Difference]: Without dead ends: 1642 [2020-04-17 14:31:16,753 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-17 14:31:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-04-17 14:31:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1510. [2020-04-17 14:31:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1510 states. [2020-04-17 14:31:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 3689 transitions. [2020-04-17 14:31:16,844 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 3689 transitions. Word has length 20 [2020-04-17 14:31:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:31:16,845 INFO L479 AbstractCegarLoop]: Abstraction has 1510 states and 3689 transitions. [2020-04-17 14:31:16,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 14:31:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 3689 transitions. [2020-04-17 14:31:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 14:31:16,847 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:31:16,847 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:31:16,847 INFO L427 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:31:16,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:31:16,847 INFO L82 PathProgramCache]: Analyzing trace with hash -366552805, now seen corresponding path program 1 times [2020-04-17 14:31:16,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:31:16,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719157359] [2020-04-17 14:31:16,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:31:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:31:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:31:16,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719157359] [2020-04-17 14:31:16,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:31:16,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 14:31:16,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892990407] [2020-04-17 14:31:16,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 14:31:16,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:31:16,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 14:31:16,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 14:31:16,911 INFO L87 Difference]: Start difference. First operand 1510 states and 3689 transitions. Second operand 6 states. [2020-04-17 14:31:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:31:16,995 INFO L93 Difference]: Finished difference Result 1759 states and 4260 transitions. [2020-04-17 14:31:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 14:31:16,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-04-17 14:31:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:31:17,000 INFO L225 Difference]: With dead ends: 1759 [2020-04-17 14:31:17,000 INFO L226 Difference]: Without dead ends: 1498 [2020-04-17 14:31:17,001 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-17 14:31:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-04-17 14:31:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1366. [2020-04-17 14:31:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-04-17 14:31:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 3257 transitions. [2020-04-17 14:31:17,036 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 3257 transitions. Word has length 20 [2020-04-17 14:31:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:31:17,036 INFO L479 AbstractCegarLoop]: Abstraction has 1366 states and 3257 transitions. [2020-04-17 14:31:17,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 14:31:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 3257 transitions. [2020-04-17 14:31:17,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-17 14:31:17,038 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:31:17,038 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:31:17,038 INFO L427 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-17 14:31:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:31:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1693480529, now seen corresponding path program 2 times [2020-04-17 14:31:17,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:31:17,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028479380] [2020-04-17 14:31:17,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:31:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 14:31:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-17 14:31:17,101 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-17 14:31:17,102 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-17 14:31:17,102 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-17 14:31:17,110 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [287] [287] L697-->L697-3: Formula: (= ~x~0_In-617274571 ~y~0_In-617274571) InVars {~y~0=~y~0_In-617274571, ~x~0=~x~0_In-617274571} OutVars{~y~0=~y~0_In-617274571, ~x~0=~x~0_In-617274571} AuxVars[] AssignedVars[] because there is no mapped edge [2020-04-17 14:31:17,116 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-17 14:31:17,116 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_read_lock() [694] [2020-04-17 14:31:17,120 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-17 14:31:17,120 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_read_lock() [694] [2020-04-17 14:31:17,121 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-17 14:31:17,121 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_write_lock() [687] [2020-04-17 14:31:17,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 02:31:17 BasicIcfg [2020-04-17 14:31:17,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 14:31:17,171 INFO L168 Benchmark]: Toolchain (without parser) took 7313.53 ms. Allocated memory was 146.3 MB in the beginning and 330.3 MB in the end (delta: 184.0 MB). Free memory was 103.1 MB in the beginning and 200.5 MB in the end (delta: -97.4 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. [2020-04-17 14:31:17,172 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 14:31:17,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.22 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 159.8 MB in the end (delta: -58.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-17 14:31:17,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.46 ms. Allocated memory is still 202.9 MB. Free memory was 159.8 MB in the beginning and 156.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-04-17 14:31:17,179 INFO L168 Benchmark]: Boogie Preprocessor took 27.94 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 156.0 MB in the end (delta: 959.3 kB). Peak memory consumption was 959.3 kB. Max. memory is 7.1 GB. [2020-04-17 14:31:17,180 INFO L168 Benchmark]: RCFGBuilder took 629.01 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 123.4 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-04-17 14:31:17,181 INFO L168 Benchmark]: TraceAbstraction took 5819.73 ms. Allocated memory was 202.9 MB in the beginning and 330.3 MB in the end (delta: 127.4 MB). Free memory was 123.4 MB in the beginning and 200.5 MB in the end (delta: -77.1 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. [2020-04-17 14:31:17,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.22 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 159.8 MB in the end (delta: -58.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.46 ms. Allocated memory is still 202.9 MB. Free memory was 159.8 MB in the beginning and 156.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.94 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 156.0 MB in the end (delta: 959.3 kB). Peak memory consumption was 959.3 kB. Max. memory is 7.1 GB. * RCFGBuilder took 629.01 ms. Allocated memory is still 202.9 MB. Free memory was 156.0 MB in the beginning and 123.4 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5819.73 ms. Allocated memory was 202.9 MB in the beginning and 330.3 MB in the end (delta: 127.4 MB). Free memory was 123.4 MB in the beginning and 200.5 MB in the end (delta: -77.1 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 101 ProgramPointsBefore, 58 ProgramPointsAfterwards, 102 TransitionsBefore, 58 TransitionsAfterwards, 2626 CoEnabledTransitionPairs, 8 FixpointIterations, 23 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 1149 VarBasedMoverChecksPositive, 80 VarBasedMoverChecksNegative, 49 SemBasedMoverChecksPositive, 57 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 10426 CheckedPairsTotal, 51 TotalNumberOfCompositions - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L677] 0 int w=0, r=0, x, y; [L703] 0 pthread_t t1, t2, t3, t4; [L704] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L705] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L693] 2 int l; [L694] CALL 2 __VERIFIER_atomic_take_read_lock() [L683] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L683] RET 2 assume_abort_if_not(w==0) [L684] 2 r = r+1 [L694] RET 2 __VERIFIER_atomic_take_read_lock() [L695] 2 l = x VAL [r=1, w=0, x=0, y=0] [L706] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L707] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L696] 2 y = l VAL [r=1, w=0, x=0, y=0] [L698] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L693] 4 int l; [L694] CALL 4 __VERIFIER_atomic_take_read_lock() [L683] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L683] RET 4 assume_abort_if_not(w==0) [L684] 4 r = r+1 [L694] RET 4 __VERIFIER_atomic_take_read_lock() [L695] 4 l = x VAL [r=2, w=0, x=0, y=0] [L696] 4 y = l VAL [r=2, w=0, x=0, y=0] [L699] 2 r = l [L700] 2 return 0; [L687] CALL 3 __VERIFIER_atomic_take_write_lock() [L679] CALL 3 assume_abort_if_not(w==0 && r==0) [L3] COND TRUE 3 !cond [L679] RET 3 assume_abort_if_not(w==0 && r==0) [L680] 3 w = 1 [L687] RET 3 __VERIFIER_atomic_take_write_lock() [L688] 3 x = 3 VAL [r=0, w=1, x=3, y=0] [L697] COND TRUE 4 !(y == x) [L697] 4 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 511 SDtfs, 441 SDslu, 720 SDs, 0 SdLazy, 211 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5381occurred 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: 0.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 3704 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...