./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/quick_sort_split.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/heap-data/quick_sort_split.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e29cb2168e7bab34fbc89c12b0474d2c34d77836 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 10:10:47,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 10:10:47,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 10:10:47,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 10:10:47,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 10:10:47,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 10:10:47,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 10:10:47,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 10:10:47,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 10:10:47,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 10:10:47,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 10:10:47,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 10:10:47,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 10:10:47,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 10:10:47,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 10:10:47,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 10:10:47,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 10:10:47,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 10:10:47,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 10:10:47,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 10:10:47,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 10:10:47,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 10:10:47,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 10:10:47,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 10:10:47,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 10:10:47,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 10:10:47,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 10:10:47,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 10:10:47,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 10:10:47,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 10:10:47,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 10:10:47,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 10:10:47,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 10:10:47,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 10:10:47,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 10:10:47,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 10:10:47,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 10:10:47,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 10:10:47,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 10:10:47,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 10:10:47,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 10:10:47,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 10:10:47,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 10:10:47,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 10:10:47,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 10:10:47,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 10:10:47,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 10:10:47,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 10:10:47,891 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 10:10:47,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 10:10:47,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 10:10:47,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 10:10:47,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 10:10:47,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 10:10:47,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 10:10:47,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 10:10:47,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 10:10:47,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 10:10:47,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 10:10:47,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 10:10:47,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 10:10:47,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 10:10:47,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 10:10:47,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 10:10:47,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:10:47,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 10:10:47,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 10:10:47,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 10:10:47,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 10:10:47,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 10:10:47,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 10:10:47,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 10:10:47,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29cb2168e7bab34fbc89c12b0474d2c34d77836 [2021-08-29 10:10:48,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 10:10:48,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 10:10:48,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 10:10:48,168 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 10:10:48,168 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 10:10:48,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/quick_sort_split.i [2021-08-29 10:10:48,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7079999ef/12d1092424a64cf1aafb81dc4620e122/FLAG0568f8695 [2021-08-29 10:10:48,590 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 10:10:48,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/quick_sort_split.i [2021-08-29 10:10:48,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7079999ef/12d1092424a64cf1aafb81dc4620e122/FLAG0568f8695 [2021-08-29 10:10:48,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7079999ef/12d1092424a64cf1aafb81dc4620e122 [2021-08-29 10:10:48,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 10:10:48,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 10:10:48,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 10:10:48,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 10:10:48,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 10:10:48,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6916864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48, skipping insertion in model container [2021-08-29 10:10:48,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 10:10:48,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 10:10:48,877 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/quick_sort_split.i[23986,23999] [2021-08-29 10:10:48,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/quick_sort_split.i[24106,24119] [2021-08-29 10:10:48,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:10:48,889 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 10:10:48,922 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/quick_sort_split.i[23986,23999] [2021-08-29 10:10:48,929 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/quick_sort_split.i[24106,24119] [2021-08-29 10:10:48,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 10:10:48,953 INFO L208 MainTranslator]: Completed translation [2021-08-29 10:10:48,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48 WrapperNode [2021-08-29 10:10:48,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 10:10:48,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 10:10:48,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 10:10:48,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 10:10:48,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 10:10:48,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 10:10:48,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 10:10:48,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 10:10:48,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:48,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:49,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:49,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 10:10:49,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 10:10:49,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 10:10:49,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 10:10:49,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (1/1) ... [2021-08-29 10:10:49,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 10:10:49,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 10:10:49,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 10:10:49,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 10:10:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 10:10:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 10:10:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 10:10:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 10:10:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 10:10:49,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 10:10:49,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 10:10:49,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-29 10:10:49,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 10:10:49,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 10:10:49,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 10:10:49,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 10:10:49,217 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-08-29 10:10:49,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:10:49 BoogieIcfgContainer [2021-08-29 10:10:49,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 10:10:49,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 10:10:49,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 10:10:49,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 10:10:49,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:10:48" (1/3) ... [2021-08-29 10:10:49,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9547a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:10:49, skipping insertion in model container [2021-08-29 10:10:49,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:10:48" (2/3) ... [2021-08-29 10:10:49,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9547a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:10:49, skipping insertion in model container [2021-08-29 10:10:49,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:10:49" (3/3) ... [2021-08-29 10:10:49,223 INFO L111 eAbstractionObserver]: Analyzing ICFG quick_sort_split.i [2021-08-29 10:10:49,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 10:10:49,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 10:10:49,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 10:10:49,273 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 10:10:49,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 10:10:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 20 states have (on average 1.7) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 10:10:49,284 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:10:49,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:10:49,285 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:10:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:10:49,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2051498666, now seen corresponding path program 1 times [2021-08-29 10:10:49,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:10:49,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051443361] [2021-08-29 10:10:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:10:49,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:10:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:10:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:10:49,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:10:49,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051443361] [2021-08-29 10:10:49,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051443361] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:10:49,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:10:49,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 10:10:49,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476479535] [2021-08-29 10:10:49,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 10:10:49,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:10:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 10:10:49,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 10:10:49,455 INFO L87 Difference]: Start difference. First operand has 23 states, 20 states have (on average 1.7) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:10:49,540 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2021-08-29 10:10:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 10:10:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 10:10:49,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:10:49,551 INFO L225 Difference]: With dead ends: 41 [2021-08-29 10:10:49,551 INFO L226 Difference]: Without dead ends: 20 [2021-08-29 10:10:49,553 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 10:10:49,555 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.42ms IncrementalHoareTripleChecker+Time [2021-08-29 10:10:49,556 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.20ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 75.42ms Time] [2021-08-29 10:10:49,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-29 10:10:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-29 10:10:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-08-29 10:10:49,601 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 9 [2021-08-29 10:10:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:10:49,601 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-08-29 10:10:49,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-08-29 10:10:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 10:10:49,602 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:10:49,602 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:10:49,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 10:10:49,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:10:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:10:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash -804873315, now seen corresponding path program 1 times [2021-08-29 10:10:49,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:10:49,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547337007] [2021-08-29 10:10:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:10:49,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:10:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:10:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:10:49,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:10:49,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547337007] [2021-08-29 10:10:49,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547337007] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:10:49,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:10:49,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 10:10:49,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121540353] [2021-08-29 10:10:49,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 10:10:49,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:10:49,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 10:10:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 10:10:49,643 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:10:49,677 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-08-29 10:10:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 10:10:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 10:10:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:10:49,678 INFO L225 Difference]: With dead ends: 26 [2021-08-29 10:10:49,678 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 10:10:49,678 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 10:10:49,679 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.77ms IncrementalHoareTripleChecker+Time [2021-08-29 10:10:49,679 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 29.77ms Time] [2021-08-29 10:10:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 10:10:49,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-29 10:10:49,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-08-29 10:10:49,682 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2021-08-29 10:10:49,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:10:49,682 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-08-29 10:10:49,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-08-29 10:10:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 10:10:49,683 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 10:10:49,683 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 10:10:49,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 10:10:49,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 10:10:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 10:10:49,684 INFO L82 PathProgramCache]: Analyzing trace with hash 818688432, now seen corresponding path program 1 times [2021-08-29 10:10:49,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 10:10:49,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908395280] [2021-08-29 10:10:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 10:10:49,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 10:10:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 10:10:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 10:10:49,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 10:10:49,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908395280] [2021-08-29 10:10:49,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908395280] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 10:10:49,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 10:10:49,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 10:10:49,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667712627] [2021-08-29 10:10:49,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 10:10:49,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 10:10:49,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 10:10:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 10:10:49,731 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 10:10:49,758 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-08-29 10:10:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 10:10:49,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 10:10:49,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 10:10:49,759 INFO L225 Difference]: With dead ends: 17 [2021-08-29 10:10:49,759 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 10:10:49,759 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 10:10:49,760 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.73ms IncrementalHoareTripleChecker+Time [2021-08-29 10:10:49,761 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.16ms Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 24.73ms Time] [2021-08-29 10:10:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 10:10:49,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 10:10:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 10:10:49,762 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-08-29 10:10:49,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 10:10:49,762 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 10:10:49,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 10:10:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 10:10:49,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 10:10:49,765 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 10:10:49,765 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 10:10:49,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 10:10:49,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 10:10:49,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:10:49,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:10:49,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 10:10:49,780 INFO L858 garLoopResultBuilder]: For program point L609(lines 609 610) no Hoare annotation was computed. [2021-08-29 10:10:49,780 INFO L858 garLoopResultBuilder]: For program point L609-2(lines 609 610) no Hoare annotation was computed. [2021-08-29 10:10:49,780 INFO L858 garLoopResultBuilder]: For program point L605(line 605) no Hoare annotation was computed. [2021-08-29 10:10:49,780 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 610) no Hoare annotation was computed. [2021-08-29 10:10:49,780 INFO L858 garLoopResultBuilder]: For program point L597(line 597) no Hoare annotation was computed. [2021-08-29 10:10:49,780 INFO L858 garLoopResultBuilder]: For program point L597-2(line 597) no Hoare annotation was computed. [2021-08-29 10:10:49,781 INFO L861 garLoopResultBuilder]: At program point L589(lines 580 590) the Hoare annotation is: true [2021-08-29 10:10:49,781 INFO L858 garLoopResultBuilder]: For program point L610(line 610) no Hoare annotation was computed. [2021-08-29 10:10:49,781 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 10:10:49,781 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 10:10:49,781 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 10:10:49,781 INFO L861 garLoopResultBuilder]: At program point L573-1(lines 573 588) the Hoare annotation is: true [2021-08-29 10:10:49,782 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 605) no Hoare annotation was computed. [2021-08-29 10:10:49,782 INFO L858 garLoopResultBuilder]: For program point L582-1(lines 582 588) no Hoare annotation was computed. [2021-08-29 10:10:49,782 INFO L858 garLoopResultBuilder]: For program point L582-3(lines 582 588) no Hoare annotation was computed. [2021-08-29 10:10:49,782 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 10:10:49,782 INFO L858 garLoopResultBuilder]: For program point L603-1(lines 591 613) no Hoare annotation was computed. [2021-08-29 10:10:49,782 INFO L858 garLoopResultBuilder]: For program point L591(lines 591 613) no Hoare annotation was computed. [2021-08-29 10:10:49,782 INFO L858 garLoopResultBuilder]: For program point L608-1(lines 591 613) no Hoare annotation was computed. [2021-08-29 10:10:49,783 INFO L858 garLoopResultBuilder]: For program point L604(lines 604 605) no Hoare annotation was computed. [2021-08-29 10:10:49,783 INFO L858 garLoopResultBuilder]: For program point L604-2(lines 604 605) no Hoare annotation was computed. [2021-08-29 10:10:49,783 INFO L854 garLoopResultBuilder]: At program point L596-2(lines 596 602) the Hoare annotation is: (and (= ULTIMATE.start_main_~low~0.offset 0) (= ULTIMATE.start_main_~high~0.base 0) (= ULTIMATE.start_main_~low~0.base 0) (= ULTIMATE.start_main_~high~0.offset 0)) [2021-08-29 10:10:49,783 INFO L858 garLoopResultBuilder]: For program point L584(lines 584 587) no Hoare annotation was computed. [2021-08-29 10:10:49,786 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 10:10:49,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:10:49 BoogieIcfgContainer [2021-08-29 10:10:49,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 10:10:49,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 10:10:49,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 10:10:49,796 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 10:10:49,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:10:49" (3/4) ... [2021-08-29 10:10:49,798 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 10:10:49,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-29 10:10:49,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-29 10:10:49,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:10:49,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 10:10:49,829 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 10:10:49,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 10:10:49,830 INFO L158 Benchmark]: Toolchain (without parser) took 1216.18ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 56.5MB in the beginning and 89.1MB in the end (delta: -32.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-08-29 10:10:49,830 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 34.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:10:49,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.71ms. Allocated memory is still 75.5MB. Free memory was 56.3MB in the beginning and 51.5MB in the end (delta: 4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 10:10:49,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.31ms. Allocated memory is still 75.5MB. Free memory was 51.5MB in the beginning and 49.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:10:49,831 INFO L158 Benchmark]: Boogie Preprocessor took 15.95ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 47.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 10:10:49,831 INFO L158 Benchmark]: RCFGBuilder took 216.03ms. Allocated memory is still 75.5MB. Free memory was 47.7MB in the beginning and 34.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 10:10:49,831 INFO L158 Benchmark]: TraceAbstraction took 576.46ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 34.0MB in the beginning and 92.0MB in the end (delta: -58.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 10:10:49,832 INFO L158 Benchmark]: Witness Printer took 33.42ms. Allocated memory is still 119.5MB. Free memory was 92.0MB in the beginning and 89.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 10:10:49,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 34.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.71ms. Allocated memory is still 75.5MB. Free memory was 56.3MB in the beginning and 51.5MB in the end (delta: 4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.31ms. Allocated memory is still 75.5MB. Free memory was 51.5MB in the beginning and 49.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.95ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 47.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 216.03ms. Allocated memory is still 75.5MB. Free memory was 47.7MB in the beginning and 34.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 576.46ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 34.0MB in the beginning and 92.0MB in the end (delta: -58.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.42ms. Allocated memory is still 119.5MB. Free memory was 92.0MB in the beginning and 89.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 605]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 610]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 517.78ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 6.43ms, AutomataDifference: 189.71ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 13.94ms, InitialAbstractionConstructionTime: 5.47ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 129.92ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 112.73ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 79 mSolverCounterSat, 0.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.18ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 39.06ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.46ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.35ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 12.20ms SsaConstructionTime, 29.45ms SatisfiabilityAnalysisTime, 120.39ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 580]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 596]: Loop Invariant Derived loop invariant: ((low == 0 && high == 0) && low == 0) && high == 0 RESULT: Ultimate proved your program to be correct! [2021-08-29 10:10:49,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...