/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 20:22:25,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 20:22:25,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 20:22:25,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 20:22:25,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 20:22:25,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 20:22:25,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 20:22:25,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 20:22:25,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 20:22:25,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 20:22:25,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 20:22:25,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 20:22:25,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 20:22:25,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 20:22:25,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 20:22:25,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 20:22:25,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 20:22:25,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 20:22:25,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 20:22:25,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 20:22:25,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 20:22:25,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 20:22:25,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 20:22:25,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 20:22:25,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 20:22:25,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 20:22:25,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 20:22:25,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 20:22:25,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 20:22:25,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 20:22:25,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 20:22:25,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 20:22:25,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 20:22:25,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 20:22:25,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 20:22:25,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 20:22:25,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 20:22:25,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 20:22:25,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 20:22:25,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 20:22:25,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 20:22:25,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 20:22:25,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 20:22:25,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 20:22:25,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 20:22:25,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 20:22:25,877 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 20:22:25,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 20:22:25,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 20:22:25,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 20:22:25,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 20:22:25,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 20:22:25,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 20:22:25,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 20:22:25,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 20:22:25,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 20:22:25,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 20:22:25,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 20:22:25,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 20:22:25,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 20:22:25,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 20:22:25,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 20:22:25,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 20:22:25,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:22:25,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 20:22:25,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 20:22:25,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 20:22:25,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 20:22:25,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 20:22:25,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 20:22:25,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 20:22:26,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 20:22:26,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 20:22:26,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 20:22:26,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 20:22:26,182 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 20:22:26,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-15 20:22:26,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee25f7a33/0b6eb895ba054067bc792776d7b88c7a/FLAG028500559 [2020-10-15 20:22:26,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 20:22:26,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-15 20:22:26,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee25f7a33/0b6eb895ba054067bc792776d7b88c7a/FLAG028500559 [2020-10-15 20:22:26,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee25f7a33/0b6eb895ba054067bc792776d7b88c7a [2020-10-15 20:22:27,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 20:22:27,004 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 20:22:27,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 20:22:27,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 20:22:27,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 20:22:27,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:22:26" (1/1) ... [2020-10-15 20:22:27,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554384ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27, skipping insertion in model container [2020-10-15 20:22:27,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:22:26" (1/1) ... [2020-10-15 20:22:27,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 20:22:27,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 20:22:27,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:22:27,521 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 20:22:27,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:22:27,693 INFO L208 MainTranslator]: Completed translation [2020-10-15 20:22:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27 WrapperNode [2020-10-15 20:22:27,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 20:22:27,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 20:22:27,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 20:22:27,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 20:22:27,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 20:22:27,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 20:22:27,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 20:22:27,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 20:22:27,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (1/1) ... [2020-10-15 20:22:27,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 20:22:27,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 20:22:27,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 20:22:27,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 20:22:27,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (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 [2020-10-15 20:22:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 20:22:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 20:22:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-10-15 20:22:27,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-10-15 20:22:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 20:22:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 20:22:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 20:22:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 20:22:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-10-15 20:22:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-10-15 20:22:27,856 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 20:22:28,294 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 20:22:28,294 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-15 20:22:28,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:22:28 BoogieIcfgContainer [2020-10-15 20:22:28,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 20:22:28,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 20:22:28,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 20:22:28,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 20:22:28,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:22:26" (1/3) ... [2020-10-15 20:22:28,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aeb2771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:22:28, skipping insertion in model container [2020-10-15 20:22:28,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:27" (2/3) ... [2020-10-15 20:22:28,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aeb2771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:22:28, skipping insertion in model container [2020-10-15 20:22:28,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:22:28" (3/3) ... [2020-10-15 20:22:28,306 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-10-15 20:22:28,318 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 20:22:28,318 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 20:22:28,326 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 20:22:28,327 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 20:22:28,360 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,360 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,360 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,361 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,361 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,361 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,362 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,362 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,362 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,363 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,363 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,363 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,363 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,364 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,364 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,364 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,365 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,365 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,365 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,366 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,366 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,367 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,367 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,367 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,368 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,368 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,368 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,368 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,369 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,369 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,369 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,369 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,370 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,370 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,370 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,370 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,370 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,371 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,371 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,375 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,376 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,376 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,376 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,376 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,376 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,382 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,382 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,383 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,383 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,383 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,383 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,383 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,398 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,398 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,398 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,399 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,399 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,399 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,413 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,414 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,414 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,414 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,414 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,414 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,415 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:28,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 20:22:28,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 20:22:28,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 20:22:28,506 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 20:22:28,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 20:22:28,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 20:22:28,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 20:22:28,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 20:22:28,508 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 20:22:28,533 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 20:22:28,536 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 102 transitions, 272 flow [2020-10-15 20:22:28,539 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 102 transitions, 272 flow [2020-10-15 20:22:28,541 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-10-15 20:22:28,630 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-10-15 20:22:28,630 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-15 20:22:28,637 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 327 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. [2020-10-15 20:22:28,643 INFO L117 LiptonReduction]: Number of co-enabled transitions 2626 [2020-10-15 20:22:29,946 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-15 20:22:30,396 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-15 20:22:30,511 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-15 20:22:30,645 INFO L132 LiptonReduction]: Checked pairs total: 20222 [2020-10-15 20:22:30,646 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-15 20:22:30,653 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 58 transitions, 184 flow [2020-10-15 20:22:31,129 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5381 states. [2020-10-15 20:22:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states. [2020-10-15 20:22:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 20:22:31,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:31,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:31,143 INFO L429 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 20:22:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:31,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1427576043, now seen corresponding path program 1 times [2020-10-15 20:22:31,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:31,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060565462] [2020-10-15 20:22:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:31,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060565462] [2020-10-15 20:22:31,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:31,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:31,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065763599] [2020-10-15 20:22:31,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 20:22:31,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:31,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 20:22:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:22:31,487 INFO L87 Difference]: Start difference. First operand 5381 states. Second operand 4 states. [2020-10-15 20:22:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:31,787 INFO L93 Difference]: Finished difference Result 10812 states and 36249 transitions. [2020-10-15 20:22:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 20:22:31,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 20:22:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:31,931 INFO L225 Difference]: With dead ends: 10812 [2020-10-15 20:22:31,932 INFO L226 Difference]: Without dead ends: 7730 [2020-10-15 20:22:31,933 INFO L677 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 [2020-10-15 20:22:32,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7730 states. [2020-10-15 20:22:32,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7730 to 5052. [2020-10-15 20:22:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5052 states. [2020-10-15 20:22:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 17159 transitions. [2020-10-15 20:22:32,247 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 17159 transitions. Word has length 8 [2020-10-15 20:22:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:32,248 INFO L481 AbstractCegarLoop]: Abstraction has 5052 states and 17159 transitions. [2020-10-15 20:22:32,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 20:22:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 17159 transitions. [2020-10-15 20:22:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 20:22:32,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:32,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:32,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 20:22:32,251 INFO L429 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 20:22:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:32,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1940857349, now seen corresponding path program 1 times [2020-10-15 20:22:32,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:32,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142229728] [2020-10-15 20:22:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:32,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142229728] [2020-10-15 20:22:32,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:32,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:32,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678653180] [2020-10-15 20:22:32,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:32,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:32,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:32,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:32,316 INFO L87 Difference]: Start difference. First operand 5052 states and 17159 transitions. Second operand 3 states. [2020-10-15 20:22:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:32,389 INFO L93 Difference]: Finished difference Result 4317 states and 12958 transitions. [2020-10-15 20:22:32,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:32,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 20:22:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:32,421 INFO L225 Difference]: With dead ends: 4317 [2020-10-15 20:22:32,421 INFO L226 Difference]: Without dead ends: 4275 [2020-10-15 20:22:32,422 INFO L677 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 [2020-10-15 20:22:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2020-10-15 20:22:32,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4275. [2020-10-15 20:22:32,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4275 states. [2020-10-15 20:22:32,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 12848 transitions. [2020-10-15 20:22:32,563 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 12848 transitions. Word has length 10 [2020-10-15 20:22:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:32,563 INFO L481 AbstractCegarLoop]: Abstraction has 4275 states and 12848 transitions. [2020-10-15 20:22:32,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 12848 transitions. [2020-10-15 20:22:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 20:22:32,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:32,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:32,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 20:22:32,566 INFO L429 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 20:22:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:32,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1806037123, now seen corresponding path program 2 times [2020-10-15 20:22:32,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:32,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763432102] [2020-10-15 20:22:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:32,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763432102] [2020-10-15 20:22:32,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:32,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:32,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749695657] [2020-10-15 20:22:32,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 20:22:32,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:32,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 20:22:32,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:22:32,636 INFO L87 Difference]: Start difference. First operand 4275 states and 12848 transitions. Second operand 4 states. [2020-10-15 20:22:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:32,698 INFO L93 Difference]: Finished difference Result 2906 states and 7004 transitions. [2020-10-15 20:22:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 20:22:32,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-15 20:22:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:32,717 INFO L225 Difference]: With dead ends: 2906 [2020-10-15 20:22:32,717 INFO L226 Difference]: Without dead ends: 2798 [2020-10-15 20:22:32,718 INFO L677 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 [2020-10-15 20:22:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2020-10-15 20:22:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2390. [2020-10-15 20:22:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2390 states. [2020-10-15 20:22:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 5909 transitions. [2020-10-15 20:22:32,800 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 5909 transitions. Word has length 10 [2020-10-15 20:22:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:32,800 INFO L481 AbstractCegarLoop]: Abstraction has 2390 states and 5909 transitions. [2020-10-15 20:22:32,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 20:22:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 5909 transitions. [2020-10-15 20:22:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 20:22:32,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:32,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:32,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 20:22:32,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 20:22:32,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:32,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1076644171, now seen corresponding path program 1 times [2020-10-15 20:22:32,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:32,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851270488] [2020-10-15 20:22:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:32,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851270488] [2020-10-15 20:22:32,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:32,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:32,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662986572] [2020-10-15 20:22:32,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 20:22:32,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:32,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 20:22:32,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 20:22:32,862 INFO L87 Difference]: Start difference. First operand 2390 states and 5909 transitions. Second operand 4 states. [2020-10-15 20:22:32,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:32,980 INFO L93 Difference]: Finished difference Result 2639 states and 6454 transitions. [2020-10-15 20:22:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 20:22:32,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 20:22:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:33,001 INFO L225 Difference]: With dead ends: 2639 [2020-10-15 20:22:33,001 INFO L226 Difference]: Without dead ends: 1900 [2020-10-15 20:22:33,002 INFO L677 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 [2020-10-15 20:22:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-10-15 20:22:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1546. [2020-10-15 20:22:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-10-15 20:22:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 3824 transitions. [2020-10-15 20:22:33,056 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 3824 transitions. Word has length 12 [2020-10-15 20:22:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:33,057 INFO L481 AbstractCegarLoop]: Abstraction has 1546 states and 3824 transitions. [2020-10-15 20:22:33,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 20:22:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 3824 transitions. [2020-10-15 20:22:33,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 20:22:33,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:33,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:33,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 20:22:33,064 INFO L429 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 20:22:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:33,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1641908398, now seen corresponding path program 1 times [2020-10-15 20:22:33,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:33,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247175156] [2020-10-15 20:22:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:33,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247175156] [2020-10-15 20:22:33,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:33,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 20:22:33,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776212693] [2020-10-15 20:22:33,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 20:22:33,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:33,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 20:22:33,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 20:22:33,185 INFO L87 Difference]: Start difference. First operand 1546 states and 3824 transitions. Second operand 6 states. [2020-10-15 20:22:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:33,284 INFO L93 Difference]: Finished difference Result 1759 states and 4308 transitions. [2020-10-15 20:22:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 20:22:33,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-15 20:22:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:33,290 INFO L225 Difference]: With dead ends: 1759 [2020-10-15 20:22:33,291 INFO L226 Difference]: Without dead ends: 1641 [2020-10-15 20:22:33,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 20:22:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2020-10-15 20:22:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1509. [2020-10-15 20:22:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-10-15 20:22:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 3739 transitions. [2020-10-15 20:22:33,331 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 3739 transitions. Word has length 20 [2020-10-15 20:22:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:33,331 INFO L481 AbstractCegarLoop]: Abstraction has 1509 states and 3739 transitions. [2020-10-15 20:22:33,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 20:22:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 3739 transitions. [2020-10-15 20:22:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 20:22:33,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:33,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:33,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 20:22:33,334 INFO L429 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 20:22:33,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:33,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2020827410, now seen corresponding path program 2 times [2020-10-15 20:22:33,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:33,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881306529] [2020-10-15 20:22:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 20:22:33,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 20:22:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 20:22:33,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 20:22:33,391 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 20:22:33,391 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 20:22:33,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 20:22:33,392 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 20:22:33,401 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [279] [279] L697-->L697-3: Formula: (= ~x~0_In-1203773173 ~y~0_In-1203773173) InVars {~y~0=~y~0_In-1203773173, ~x~0=~x~0_In-1203773173} OutVars{~y~0=~y~0_In-1203773173, ~x~0=~x~0_In-1203773173} AuxVars[] AssignedVars[] because there is no mapped edge [2020-10-15 20:22:33,408 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-15 20:22:33,408 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-15 20:22:33,412 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-15 20:22:33,412 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-15 20:22:33,413 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-15 20:22:33,413 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-15 20:22:33,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:22:33 BasicIcfg [2020-10-15 20:22:33,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 20:22:33,470 INFO L168 Benchmark]: Toolchain (without parser) took 6466.16 ms. Allocated memory was 250.1 MB in the beginning and 420.0 MB in the end (delta: 169.9 MB). Free memory was 205.4 MB in the beginning and 292.8 MB in the end (delta: -87.4 MB). Peak memory consumption was 82.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:33,471 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:22:33,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.03 ms. Allocated memory was 250.1 MB in the beginning and 310.9 MB in the end (delta: 60.8 MB). Free memory was 205.4 MB in the beginning and 266.3 MB in the end (delta: -60.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:33,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.49 ms. Allocated memory is still 310.9 MB. Free memory was 266.3 MB in the beginning and 263.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:33,479 INFO L168 Benchmark]: Boogie Preprocessor took 25.50 ms. Allocated memory is still 310.9 MB. Free memory is still 263.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:22:33,480 INFO L168 Benchmark]: RCFGBuilder took 509.61 ms. Allocated memory is still 310.9 MB. Free memory was 263.8 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:33,481 INFO L168 Benchmark]: TraceAbstraction took 5169.45 ms. Allocated memory was 310.9 MB in the beginning and 420.0 MB in the end (delta: 109.1 MB). Free memory was 231.9 MB in the beginning and 292.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 48.1 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:33,494 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 691.03 ms. Allocated memory was 250.1 MB in the beginning and 310.9 MB in the end (delta: 60.8 MB). Free memory was 205.4 MB in the beginning and 266.3 MB in the end (delta: -60.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 64.49 ms. Allocated memory is still 310.9 MB. Free memory was 266.3 MB in the beginning and 263.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.50 ms. Allocated memory is still 310.9 MB. Free memory is still 263.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 509.61 ms. Allocated memory is still 310.9 MB. Free memory was 263.8 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5169.45 ms. Allocated memory was 310.9 MB in the beginning and 420.0 MB in the end (delta: 109.1 MB). Free memory was 231.9 MB in the beginning and 292.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 48.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1959 VarBasedMoverChecksPositive, 86 VarBasedMoverChecksNegative, 31 SemBasedMoverChecksPositive, 55 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 751 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 101 PlacesBefore, 58 PlacesAfterwards, 102 TransitionsBefore, 58 TransitionsAfterwards, 2626 CoEnabledTransitionPairs, 7 FixpointIterations, 23 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 52 TotalNumberOfCompositions, 20222 MoverChecksTotal - 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] [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] [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] [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() [L699] 2 r = l [L700] 2 return 0; [L687] CALL 1 __VERIFIER_atomic_take_write_lock() [L679] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L679] RET 1 assume_abort_if_not(w==0 && r==0) [L680] 1 w = 1 [L687] RET 1 __VERIFIER_atomic_take_write_lock() [L695] 4 l = x VAL [r=0, w=1, x=0, y=0] [L696] 4 y = l VAL [r=0, w=1, x=0, y=0] [L688] 1 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: 4.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 429 SDtfs, 403 SDslu, 516 SDs, 0 SdLazy, 150 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 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: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 3572 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 1515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...