/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 23:37:26,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 23:37:26,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 23:37:26,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 23:37:26,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 23:37:26,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 23:37:26,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 23:37:26,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 23:37:26,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 23:37:26,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 23:37:26,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 23:37:26,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 23:37:26,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 23:37:26,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 23:37:26,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 23:37:26,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 23:37:26,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 23:37:26,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 23:37:26,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 23:37:26,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 23:37:26,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 23:37:26,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 23:37:26,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 23:37:26,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 23:37:26,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 23:37:26,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 23:37:26,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 23:37:26,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 23:37:26,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 23:37:26,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 23:37:26,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 23:37:26,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 23:37:26,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 23:37:26,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 23:37:26,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 23:37:26,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 23:37:26,594 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.epf [2019-12-18 23:37:26,613 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 23:37:26,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 23:37:26,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 23:37:26,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 23:37:26,616 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 23:37:26,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 23:37:26,616 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 23:37:26,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 23:37:26,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 23:37:26,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 23:37:26,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 23:37:26,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 23:37:26,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 23:37:26,619 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 23:37:26,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 23:37:26,619 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 23:37:26,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 23:37:26,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 23:37:26,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 23:37:26,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 23:37:26,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 23:37:26,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:37:26,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 23:37:26,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 23:37:26,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 23:37:26,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 23:37:26,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 23:37:26,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-18 23:37:26,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 23:37:26,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 23:37:26,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 23:37:26,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 23:37:26,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 23:37:26,940 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 23:37:26,941 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 23:37:26,942 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2019-12-18 23:37:27,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0794fee/da4296b944b14f93ad03faa4c303f7c5/FLAG64488ed60 [2019-12-18 23:37:27,550 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 23:37:27,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2019-12-18 23:37:27,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0794fee/da4296b944b14f93ad03faa4c303f7c5/FLAG64488ed60 [2019-12-18 23:37:27,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0794fee/da4296b944b14f93ad03faa4c303f7c5 [2019-12-18 23:37:27,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 23:37:27,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 23:37:27,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 23:37:27,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 23:37:27,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 23:37:27,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:37:27" (1/1) ... [2019-12-18 23:37:27,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eaaf5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:27, skipping insertion in model container [2019-12-18 23:37:27,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:37:27" (1/1) ... [2019-12-18 23:37:27,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 23:37:27,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 23:37:28,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:37:28,454 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 23:37:28,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:37:28,608 INFO L208 MainTranslator]: Completed translation [2019-12-18 23:37:28,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28 WrapperNode [2019-12-18 23:37:28,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 23:37:28,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 23:37:28,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 23:37:28,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 23:37:28,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 23:37:28,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 23:37:28,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 23:37:28,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 23:37:28,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (1/1) ... [2019-12-18 23:37:28,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 23:37:28,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 23:37:28,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 23:37:28,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 23:37:28,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (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 [2019-12-18 23:37:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-18 23:37:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 23:37:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2019-12-18 23:37:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2019-12-18 23:37:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 23:37:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 23:37:28,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 23:37:28,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 23:37:28,783 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2019-12-18 23:37:28,783 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2019-12-18 23:37:28,784 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 23:37:28,930 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2019-12-18 23:37:29,160 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2019-12-18 23:37:29,173 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 23:37:29,174 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-18 23:37:29,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:37:29 BoogieIcfgContainer [2019-12-18 23:37:29,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 23:37:29,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 23:37:29,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 23:37:29,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 23:37:29,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:37:27" (1/3) ... [2019-12-18 23:37:29,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a029f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:37:29, skipping insertion in model container [2019-12-18 23:37:29,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:37:28" (2/3) ... [2019-12-18 23:37:29,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a029f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:37:29, skipping insertion in model container [2019-12-18 23:37:29,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:37:29" (3/3) ... [2019-12-18 23:37:29,184 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2019-12-18 23:37:29,193 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 23:37:29,194 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 23:37:29,201 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 23:37:29,202 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 23:37:29,235 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,236 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,236 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,236 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,237 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,237 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,237 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,238 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,238 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,239 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,239 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,240 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,240 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,241 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,242 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,242 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,242 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,243 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,244 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,244 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,245 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,245 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,246 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,247 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,247 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,248 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,248 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,248 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,249 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,249 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,250 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,250 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,250 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,251 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,255 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,255 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,256 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,257 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,268 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,269 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,269 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,269 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,269 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,274 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,275 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,275 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,275 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,279 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,280 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,280 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,280 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,280 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:37:29,334 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-18 23:37:29,356 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:37:29,357 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:37:29,357 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:37:29,357 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:37:29,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:37:29,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:37:29,358 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:37:29,358 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:37:29,372 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 98 transitions [2019-12-18 23:37:31,303 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26398 states. [2019-12-18 23:37:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 26398 states. [2019-12-18 23:37:31,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-18 23:37:31,316 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:37:31,317 INFO L411 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] [2019-12-18 23:37:31,318 INFO L410 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 23:37:31,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:37:31,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1760795937, now seen corresponding path program 1 times [2019-12-18 23:37:31,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:37:31,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374379081] [2019-12-18 23:37:31,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:37:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:37:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:37:31,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374379081] [2019-12-18 23:37:31,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:37:31,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 23:37:31,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23405717] [2019-12-18 23:37:31,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:37:31,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:37:31,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:37:31,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:37:31,645 INFO L87 Difference]: Start difference. First operand 26398 states. Second operand 4 states. [2019-12-18 23:37:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:37:33,495 INFO L93 Difference]: Finished difference Result 52907 states and 202300 transitions. [2019-12-18 23:37:33,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:37:33,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-12-18 23:37:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:37:33,874 INFO L225 Difference]: With dead ends: 52907 [2019-12-18 23:37:33,874 INFO L226 Difference]: Without dead ends: 36825 [2019-12-18 23:37:33,878 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:37:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36825 states. [2019-12-18 23:37:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36825 to 22833. [2019-12-18 23:37:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22833 states. [2019-12-18 23:37:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22833 states to 22833 states and 87505 transitions. [2019-12-18 23:37:35,641 INFO L78 Accepts]: Start accepts. Automaton has 22833 states and 87505 transitions. Word has length 24 [2019-12-18 23:37:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:37:35,641 INFO L462 AbstractCegarLoop]: Abstraction has 22833 states and 87505 transitions. [2019-12-18 23:37:35,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:37:35,642 INFO L276 IsEmpty]: Start isEmpty. Operand 22833 states and 87505 transitions. [2019-12-18 23:37:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-18 23:37:35,652 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:37:35,655 INFO L411 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] [2019-12-18 23:37:35,655 INFO L410 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 23:37:35,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:37:35,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1353854248, now seen corresponding path program 1 times [2019-12-18 23:37:35,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:37:35,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837101679] [2019-12-18 23:37:35,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:37:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:37:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:37:35,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837101679] [2019-12-18 23:37:35,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:37:35,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:37:35,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792172369] [2019-12-18 23:37:35,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:37:35,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:37:35,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:37:35,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:37:35,795 INFO L87 Difference]: Start difference. First operand 22833 states and 87505 transitions. Second operand 3 states. [2019-12-18 23:37:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:37:36,195 INFO L93 Difference]: Finished difference Result 20901 states and 75794 transitions. [2019-12-18 23:37:36,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:37:36,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-12-18 23:37:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:37:36,296 INFO L225 Difference]: With dead ends: 20901 [2019-12-18 23:37:36,297 INFO L226 Difference]: Without dead ends: 20613 [2019-12-18 23:37:36,298 INFO L631 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 [2019-12-18 23:37:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20613 states. [2019-12-18 23:37:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20613 to 20613. [2019-12-18 23:37:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20613 states. [2019-12-18 23:37:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20613 states to 20613 states and 74746 transitions. [2019-12-18 23:37:37,912 INFO L78 Accepts]: Start accepts. Automaton has 20613 states and 74746 transitions. Word has length 26 [2019-12-18 23:37:37,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:37:37,913 INFO L462 AbstractCegarLoop]: Abstraction has 20613 states and 74746 transitions. [2019-12-18 23:37:37,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:37:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 20613 states and 74746 transitions. [2019-12-18 23:37:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-18 23:37:37,914 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:37:37,914 INFO L411 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] [2019-12-18 23:37:37,914 INFO L410 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 23:37:37,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:37:37,915 INFO L82 PathProgramCache]: Analyzing trace with hash 537325876, now seen corresponding path program 2 times [2019-12-18 23:37:37,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:37:37,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431999438] [2019-12-18 23:37:37,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:37:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:37:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:37:37,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431999438] [2019-12-18 23:37:37,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:37:37,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 23:37:37,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165035348] [2019-12-18 23:37:37,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:37:37,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:37:37,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:37:37,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:37:37,995 INFO L87 Difference]: Start difference. First operand 20613 states and 74746 transitions. Second operand 4 states. [2019-12-18 23:37:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:37:38,117 INFO L93 Difference]: Finished difference Result 18195 states and 60163 transitions. [2019-12-18 23:37:38,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:37:38,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-12-18 23:37:38,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:37:38,186 INFO L225 Difference]: With dead ends: 18195 [2019-12-18 23:37:38,186 INFO L226 Difference]: Without dead ends: 17619 [2019-12-18 23:37:38,186 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:37:38,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17619 states. [2019-12-18 23:37:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17619 to 13890. [2019-12-18 23:37:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13890 states. [2019-12-18 23:37:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13890 states to 13890 states and 46344 transitions. [2019-12-18 23:37:38,791 INFO L78 Accepts]: Start accepts. Automaton has 13890 states and 46344 transitions. Word has length 26 [2019-12-18 23:37:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:37:38,791 INFO L462 AbstractCegarLoop]: Abstraction has 13890 states and 46344 transitions. [2019-12-18 23:37:38,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:37:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13890 states and 46344 transitions. [2019-12-18 23:37:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-18 23:37:38,794 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:37:38,794 INFO L411 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] [2019-12-18 23:37:38,794 INFO L410 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 23:37:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:37:38,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1335511648, now seen corresponding path program 1 times [2019-12-18 23:37:38,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:37:38,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766743497] [2019-12-18 23:37:38,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:37:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:37:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:37:38,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766743497] [2019-12-18 23:37:38,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:37:38,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 23:37:38,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981266392] [2019-12-18 23:37:38,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:37:38,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:37:38,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:37:38,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:37:38,880 INFO L87 Difference]: Start difference. First operand 13890 states and 46344 transitions. Second operand 4 states. [2019-12-18 23:37:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:37:39,024 INFO L93 Difference]: Finished difference Result 14757 states and 48987 transitions. [2019-12-18 23:37:39,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:37:39,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-12-18 23:37:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:37:39,064 INFO L225 Difference]: With dead ends: 14757 [2019-12-18 23:37:39,064 INFO L226 Difference]: Without dead ends: 8997 [2019-12-18 23:37:39,067 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:37:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2019-12-18 23:37:39,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 7638. [2019-12-18 23:37:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7638 states. [2019-12-18 23:37:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 24731 transitions. [2019-12-18 23:37:39,516 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 24731 transitions. Word has length 30 [2019-12-18 23:37:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:37:39,518 INFO L462 AbstractCegarLoop]: Abstraction has 7638 states and 24731 transitions. [2019-12-18 23:37:39,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:37:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 24731 transitions. [2019-12-18 23:37:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-18 23:37:39,531 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:37:39,531 INFO L411 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, 1] [2019-12-18 23:37:39,532 INFO L410 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 23:37:39,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:37:39,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1607567584, now seen corresponding path program 1 times [2019-12-18 23:37:39,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:37:39,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571412380] [2019-12-18 23:37:39,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:37:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:37:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:37:39,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571412380] [2019-12-18 23:37:39,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:37:39,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-18 23:37:39,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946765679] [2019-12-18 23:37:39,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:37:39,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:37:39,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:37:39,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:37:39,690 INFO L87 Difference]: Start difference. First operand 7638 states and 24731 transitions. Second operand 6 states. [2019-12-18 23:37:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:37:39,824 INFO L93 Difference]: Finished difference Result 8619 states and 27767 transitions. [2019-12-18 23:37:39,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-18 23:37:39,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-12-18 23:37:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:37:39,857 INFO L225 Difference]: With dead ends: 8619 [2019-12-18 23:37:39,858 INFO L226 Difference]: Without dead ends: 8133 [2019-12-18 23:37:39,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:37:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8133 states. [2019-12-18 23:37:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8133 to 7557. [2019-12-18 23:37:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7557 states. [2019-12-18 23:37:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 24392 transitions. [2019-12-18 23:37:40,049 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 24392 transitions. Word has length 39 [2019-12-18 23:37:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:37:40,051 INFO L462 AbstractCegarLoop]: Abstraction has 7557 states and 24392 transitions. [2019-12-18 23:37:40,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:37:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 24392 transitions. [2019-12-18 23:37:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-18 23:37:40,063 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:37:40,063 INFO L411 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, 1] [2019-12-18 23:37:40,064 INFO L410 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 23:37:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:37:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1397335694, now seen corresponding path program 1 times [2019-12-18 23:37:40,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:37:40,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949272108] [2019-12-18 23:37:40,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:37:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:37:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:37:40,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949272108] [2019-12-18 23:37:40,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:37:40,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-18 23:37:40,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952237755] [2019-12-18 23:37:40,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:37:40,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:37:40,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:37:40,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:37:40,172 INFO L87 Difference]: Start difference. First operand 7557 states and 24392 transitions. Second operand 6 states. [2019-12-18 23:37:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:37:40,294 INFO L93 Difference]: Finished difference Result 8538 states and 27428 transitions. [2019-12-18 23:37:40,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-18 23:37:40,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-12-18 23:37:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:37:40,321 INFO L225 Difference]: With dead ends: 8538 [2019-12-18 23:37:40,322 INFO L226 Difference]: Without dead ends: 7809 [2019-12-18 23:37:40,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:37:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2019-12-18 23:37:40,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7233. [2019-12-18 23:37:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7233 states. [2019-12-18 23:37:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 23279 transitions. [2019-12-18 23:37:40,499 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 23279 transitions. Word has length 39 [2019-12-18 23:37:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:37:40,500 INFO L462 AbstractCegarLoop]: Abstraction has 7233 states and 23279 transitions. [2019-12-18 23:37:40,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:37:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 23279 transitions. [2019-12-18 23:37:40,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-18 23:37:40,508 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:37:40,508 INFO L411 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, 1] [2019-12-18 23:37:40,508 INFO L410 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 23:37:40,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:37:40,509 INFO L82 PathProgramCache]: Analyzing trace with hash -406254748, now seen corresponding path program 2 times [2019-12-18 23:37:40,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:37:40,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514957069] [2019-12-18 23:37:40,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:37:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:37:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:37:40,573 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:37:40,573 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:37:40,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:37:40 BasicIcfg [2019-12-18 23:37:40,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 23:37:40,632 INFO L168 Benchmark]: Toolchain (without parser) took 12764.73 ms. Allocated memory was 141.0 MB in the beginning and 917.0 MB in the end (delta: 775.9 MB). Free memory was 100.2 MB in the beginning and 233.1 MB in the end (delta: -132.9 MB). Peak memory consumption was 643.1 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:40,633 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 141.0 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 23:37:40,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.02 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 100.0 MB in the beginning and 159.8 MB in the end (delta: -59.9 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:40,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.75 ms. Allocated memory is still 201.3 MB. Free memory was 159.8 MB in the beginning and 157.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:40,641 INFO L168 Benchmark]: Boogie Preprocessor took 35.61 ms. Allocated memory is still 201.3 MB. Free memory was 157.3 MB in the beginning and 156.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:40,642 INFO L168 Benchmark]: RCFGBuilder took 453.66 ms. Allocated memory is still 201.3 MB. Free memory was 156.0 MB in the beginning and 134.9 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:40,642 INFO L168 Benchmark]: TraceAbstraction took 11452.03 ms. Allocated memory was 201.3 MB in the beginning and 917.0 MB in the end (delta: 715.7 MB). Free memory was 134.2 MB in the beginning and 233.1 MB in the end (delta: -98.8 MB). Peak memory consumption was 616.8 MB. Max. memory is 7.1 GB. [2019-12-18 23:37:40,651 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 141.0 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.02 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 100.0 MB in the beginning and 159.8 MB in the end (delta: -59.9 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.75 ms. Allocated memory is still 201.3 MB. Free memory was 159.8 MB in the beginning and 157.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.61 ms. Allocated memory is still 201.3 MB. Free memory was 157.3 MB in the beginning and 156.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.66 ms. Allocated memory is still 201.3 MB. Free memory was 156.0 MB in the beginning and 134.9 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11452.03 ms. Allocated memory was 201.3 MB in the beginning and 917.0 MB in the end (delta: 715.7 MB). Free memory was 134.2 MB in the beginning and 233.1 MB in the end (delta: -98.8 MB). Peak memory consumption was 616.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 694]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L674] 0 int w=0, r=0, x, y; VAL [r=0, w=0, x=0, y=0] [L700] 0 pthread_t t1, t2, t3, t4; VAL [r=0, w=0, x=0, y=0] [L701] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L702] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L703] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L704] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L690] 4 int l; [L691] CALL 4 __VERIFIER_atomic_take_read_lock() [L681] 4 r = r+1 [L691] RET 4 __VERIFIER_atomic_take_read_lock() [L692] 4 l = x VAL [r=1, w=0, x=0, y=0] [L693] 4 y = l VAL [r=1, w=0, x=0, y=0] [L694] COND FALSE 4 !(!(y == x)) VAL [r=1, w=0, x=0, y=0] [L695] 4 l = r-1 VAL [r=1, w=0, x=0, y=0] [L690] 2 int l; [L691] CALL 2 __VERIFIER_atomic_take_read_lock() [L681] 2 r = r+1 [L691] RET 2 __VERIFIER_atomic_take_read_lock() [L692] 2 l = x VAL [r=2, w=0, x=0, y=0] [L693] 2 y = l VAL [r=2, w=0, x=0, y=0] [L696] 4 r = l VAL [r=0, w=0, x=0, y=0] [L684] CALL 1 __VERIFIER_atomic_take_write_lock() [L677] 1 w = 1 [L684] RET 1 __VERIFIER_atomic_take_write_lock() [L685] 1 x = 3 VAL [r=0, w=1, x=3, y=0] [L694] COND TRUE 2 !(y == x) VAL [r=0, w=1, x=3, y=0] [L694] 2 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 1 error locations. Result: UNSAFE, OverallTime: 11.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 851 SDtfs, 630 SDslu, 1250 SDs, 0 SdLazy, 232 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26398occurred 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: 4.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 20232 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 11478 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...