./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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-manipulation/bubble_sort_linux-2.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 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:26:27,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:26:27,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:26:27,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:26:27,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:26:27,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:26:27,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:26:27,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:26:27,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:26:27,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:26:27,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:26:27,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:26:27,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:26:27,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:26:27,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:26:27,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:26:27,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:26:27,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:26:27,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:26:27,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:26:27,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:26:27,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:26:27,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:26:27,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:26:27,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:26:27,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:26:27,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:26:27,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:26:27,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:26:27,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:26:27,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:26:27,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:26:27,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:26:27,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:26:27,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:26:27,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:26:27,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:26:27,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:26:27,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:26:27,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:26:27,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:26:27,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:26:27,820 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:26:27,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:26:27,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:26:27,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:26:27,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:26:27,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:26:27,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:26:27,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:26:27,822 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:26:27,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:26:27,823 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:26:27,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:26:27,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:26:27,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:26:27,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:26:27,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:26:27,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:26:27,824 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:26:27,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:26:27,824 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:26:27,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:26:27,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:26:27,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:26:27,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:26:27,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:26:27,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:26:27,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:26:27,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:26:27,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:26:27,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:26:27,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:26:27,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:26:27,826 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:26:27,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:26:27,826 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:26:27,827 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2023-02-17 00:26:28,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:26:28,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:26:28,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:26:28,044 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:26:28,045 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:26:28,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-02-17 00:26:28,966 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:26:29,161 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:26:29,161 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-02-17 00:26:29,179 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b3351c0/0015696d82c2413fbd98862c85bf13f0/FLAG857142d66 [2023-02-17 00:26:29,188 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b3351c0/0015696d82c2413fbd98862c85bf13f0 [2023-02-17 00:26:29,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:26:29,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:26:29,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:26:29,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:26:29,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:26:29,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5a742c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29, skipping insertion in model container [2023-02-17 00:26:29,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:26:29,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:26:29,526 WARN L237 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-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-02-17 00:26:29,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:26:29,575 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:26:29,612 WARN L237 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-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-02-17 00:26:29,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:26:29,652 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:26:29,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29 WrapperNode [2023-02-17 00:26:29,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:26:29,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:26:29,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:26:29,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:26:29,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,715 INFO L138 Inliner]: procedures = 232, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2023-02-17 00:26:29,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:26:29,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:26:29,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:26:29,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:26:29,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:26:29,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:26:29,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:26:29,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:26:29,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (1/1) ... [2023-02-17 00:26:29,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:26:29,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:26:29,806 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) [2023-02-17 00:26:29,824 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 [2023-02-17 00:26:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 00:26:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-02-17 00:26:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-02-17 00:26:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 00:26:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 00:26:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-02-17 00:26:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-02-17 00:26:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 00:26:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-17 00:26:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-17 00:26:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 00:26:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 00:26:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:26:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 00:26:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-02-17 00:26:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-02-17 00:26:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:26:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:26:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:26:29,996 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:26:29,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:26:30,224 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:26:30,229 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:26:30,229 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2023-02-17 00:26:30,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:26:30 BoogieIcfgContainer [2023-02-17 00:26:30,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:26:30,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:26:30,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:26:30,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:26:30,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:26:29" (1/3) ... [2023-02-17 00:26:30,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2e70ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:26:30, skipping insertion in model container [2023-02-17 00:26:30,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:29" (2/3) ... [2023-02-17 00:26:30,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2e70ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:26:30, skipping insertion in model container [2023-02-17 00:26:30,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:26:30" (3/3) ... [2023-02-17 00:26:30,236 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2023-02-17 00:26:30,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:26:30,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:26:30,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:26:30,287 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17f56363, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:26:30,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:26:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 89 states have (on average 1.7415730337078652) internal successors, (155), 108 states have internal predecessors, (155), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-17 00:26:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 00:26:30,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:30,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:30,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1761516263, now seen corresponding path program 1 times [2023-02-17 00:26:30,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:30,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375663498] [2023-02-17 00:26:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:30,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:30,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375663498] [2023-02-17 00:26:30,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375663498] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:30,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:30,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:26:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89219132] [2023-02-17 00:26:30,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:30,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:26:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:30,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:26:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:26:30,517 INFO L87 Difference]: Start difference. First operand has 118 states, 89 states have (on average 1.7415730337078652) internal successors, (155), 108 states have internal predecessors, (155), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:30,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:30,574 INFO L93 Difference]: Finished difference Result 230 states and 397 transitions. [2023-02-17 00:26:30,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:26:30,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 00:26:30,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:30,582 INFO L225 Difference]: With dead ends: 230 [2023-02-17 00:26:30,582 INFO L226 Difference]: Without dead ends: 107 [2023-02-17 00:26:30,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:26:30,593 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:30,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:26:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-17 00:26:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-02-17 00:26:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 97 states have internal predecessors, (102), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 00:26:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2023-02-17 00:26:30,638 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 9 [2023-02-17 00:26:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:30,638 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2023-02-17 00:26:30,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:30,639 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2023-02-17 00:26:30,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 00:26:30,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:30,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:30,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:26:30,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash 849043181, now seen corresponding path program 1 times [2023-02-17 00:26:30,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:30,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128646355] [2023-02-17 00:26:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:30,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 00:26:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:30,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:30,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128646355] [2023-02-17 00:26:30,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128646355] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:30,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:30,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 00:26:30,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091696019] [2023-02-17 00:26:30,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:30,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 00:26:30,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 00:26:30,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:26:30,909 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:31,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:31,143 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2023-02-17 00:26:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 00:26:31,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-02-17 00:26:31,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:31,145 INFO L225 Difference]: With dead ends: 109 [2023-02-17 00:26:31,145 INFO L226 Difference]: Without dead ends: 106 [2023-02-17 00:26:31,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:26:31,146 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 242 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:31,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 133 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 00:26:31,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-17 00:26:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-17 00:26:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.2317073170731707) internal successors, (101), 96 states have internal predecessors, (101), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 00:26:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2023-02-17 00:26:31,156 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 21 [2023-02-17 00:26:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:31,159 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2023-02-17 00:26:31,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2023-02-17 00:26:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 00:26:31,160 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:31,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:31,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:26:31,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:31,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:31,162 INFO L85 PathProgramCache]: Analyzing trace with hash 502050183, now seen corresponding path program 1 times [2023-02-17 00:26:31,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:31,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075343204] [2023-02-17 00:26:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:31,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 00:26:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:31,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:31,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075343204] [2023-02-17 00:26:31,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075343204] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:31,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:31,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 00:26:31,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464804637] [2023-02-17 00:26:31,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:31,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 00:26:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 00:26:31,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-02-17 00:26:31,709 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:32,338 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2023-02-17 00:26:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 00:26:32,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-02-17 00:26:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:32,344 INFO L225 Difference]: With dead ends: 198 [2023-02-17 00:26:32,344 INFO L226 Difference]: Without dead ends: 192 [2023-02-17 00:26:32,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-02-17 00:26:32,349 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 533 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:32,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 157 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 00:26:32,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-02-17 00:26:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2023-02-17 00:26:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 144 states have (on average 1.2430555555555556) internal successors, (179), 158 states have internal predecessors, (179), 23 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-17 00:26:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 209 transitions. [2023-02-17 00:26:32,376 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 209 transitions. Word has length 24 [2023-02-17 00:26:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:32,377 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 209 transitions. [2023-02-17 00:26:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 209 transitions. [2023-02-17 00:26:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 00:26:32,378 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:32,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:32,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 00:26:32,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1234303898, now seen corresponding path program 1 times [2023-02-17 00:26:32,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:32,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265627627] [2023-02-17 00:26:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:32,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:32,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 00:26:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:32,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:32,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265627627] [2023-02-17 00:26:32,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265627627] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:32,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:32,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 00:26:32,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494022129] [2023-02-17 00:26:32,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:32,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 00:26:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 00:26:32,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-02-17 00:26:32,963 INFO L87 Difference]: Start difference. First operand 172 states and 209 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:33,578 INFO L93 Difference]: Finished difference Result 274 states and 329 transitions. [2023-02-17 00:26:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 00:26:33,579 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-02-17 00:26:33,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:33,580 INFO L225 Difference]: With dead ends: 274 [2023-02-17 00:26:33,580 INFO L226 Difference]: Without dead ends: 271 [2023-02-17 00:26:33,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-02-17 00:26:33,581 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 322 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:33,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 225 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 00:26:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-02-17 00:26:33,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2023-02-17 00:26:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.238532110091743) internal successors, (270), 233 states have internal predecessors, (270), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 00:26:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 309 transitions. [2023-02-17 00:26:33,614 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 309 transitions. Word has length 27 [2023-02-17 00:26:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:33,614 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 309 transitions. [2023-02-17 00:26:33,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 309 transitions. [2023-02-17 00:26:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:26:33,615 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:33,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:33,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 00:26:33,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1680148119, now seen corresponding path program 1 times [2023-02-17 00:26:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:33,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122128143] [2023-02-17 00:26:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:33,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 00:26:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:34,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122128143] [2023-02-17 00:26:34,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122128143] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:34,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:34,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-02-17 00:26:34,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770927894] [2023-02-17 00:26:34,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:34,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 00:26:34,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 00:26:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-02-17 00:26:34,300 INFO L87 Difference]: Start difference. First operand 253 states and 309 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:35,058 INFO L93 Difference]: Finished difference Result 273 states and 327 transitions. [2023-02-17 00:26:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 00:26:35,062 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-02-17 00:26:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:35,064 INFO L225 Difference]: With dead ends: 273 [2023-02-17 00:26:35,064 INFO L226 Difference]: Without dead ends: 270 [2023-02-17 00:26:35,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-02-17 00:26:35,066 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 352 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:35,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 295 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 00:26:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-02-17 00:26:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 253. [2023-02-17 00:26:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.2339449541284404) internal successors, (269), 233 states have internal predecessors, (269), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 00:26:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 308 transitions. [2023-02-17 00:26:35,099 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 308 transitions. Word has length 30 [2023-02-17 00:26:35,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:35,099 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 308 transitions. [2023-02-17 00:26:35,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 308 transitions. [2023-02-17 00:26:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 00:26:35,100 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:35,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:35,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 00:26:35,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash -493122043, now seen corresponding path program 1 times [2023-02-17 00:26:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:35,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45030253] [2023-02-17 00:26:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:35,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 00:26:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:35,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:35,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45030253] [2023-02-17 00:26:35,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45030253] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:35,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:35,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 00:26:35,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251865989] [2023-02-17 00:26:35,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:35,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 00:26:35,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:35,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 00:26:35,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-02-17 00:26:35,861 INFO L87 Difference]: Start difference. First operand 253 states and 308 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:36,693 INFO L93 Difference]: Finished difference Result 272 states and 325 transitions. [2023-02-17 00:26:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 00:26:36,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-02-17 00:26:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:36,695 INFO L225 Difference]: With dead ends: 272 [2023-02-17 00:26:36,696 INFO L226 Difference]: Without dead ends: 269 [2023-02-17 00:26:36,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-02-17 00:26:36,697 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 340 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:36,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 271 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 00:26:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-02-17 00:26:36,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 253. [2023-02-17 00:26:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 233 states have internal predecessors, (268), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 00:26:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 307 transitions. [2023-02-17 00:26:36,750 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 307 transitions. Word has length 33 [2023-02-17 00:26:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:36,750 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 307 transitions. [2023-02-17 00:26:36,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 307 transitions. [2023-02-17 00:26:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 00:26:36,751 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:36,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:36,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 00:26:36,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:36,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2033122620, now seen corresponding path program 1 times [2023-02-17 00:26:36,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:36,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591622800] [2023-02-17 00:26:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:36,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 00:26:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:37,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:37,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591622800] [2023-02-17 00:26:37,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591622800] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:37,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:37,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 00:26:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975789413] [2023-02-17 00:26:37,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:37,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 00:26:37,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 00:26:37,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-02-17 00:26:37,623 INFO L87 Difference]: Start difference. First operand 253 states and 307 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:38,520 INFO L93 Difference]: Finished difference Result 271 states and 323 transitions. [2023-02-17 00:26:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 00:26:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-02-17 00:26:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:38,521 INFO L225 Difference]: With dead ends: 271 [2023-02-17 00:26:38,521 INFO L226 Difference]: Without dead ends: 268 [2023-02-17 00:26:38,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-02-17 00:26:38,522 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 348 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:38,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 249 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 00:26:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-02-17 00:26:38,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 253. [2023-02-17 00:26:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.224770642201835) internal successors, (267), 233 states have internal predecessors, (267), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 00:26:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 306 transitions. [2023-02-17 00:26:38,554 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 306 transitions. Word has length 36 [2023-02-17 00:26:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:38,555 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 306 transitions. [2023-02-17 00:26:38,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:38,555 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 306 transitions. [2023-02-17 00:26:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 00:26:38,559 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:38,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:38,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 00:26:38,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1335339115, now seen corresponding path program 1 times [2023-02-17 00:26:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:38,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289322178] [2023-02-17 00:26:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 00:26:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:39,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289322178] [2023-02-17 00:26:39,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289322178] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:39,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:39,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-02-17 00:26:39,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510255166] [2023-02-17 00:26:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:39,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 00:26:39,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 00:26:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-02-17 00:26:39,090 INFO L87 Difference]: Start difference. First operand 253 states and 306 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:39,853 INFO L93 Difference]: Finished difference Result 270 states and 321 transitions. [2023-02-17 00:26:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-17 00:26:39,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-02-17 00:26:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:39,858 INFO L225 Difference]: With dead ends: 270 [2023-02-17 00:26:39,858 INFO L226 Difference]: Without dead ends: 267 [2023-02-17 00:26:39,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-02-17 00:26:39,859 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 409 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:39,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 271 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 00:26:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-02-17 00:26:39,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 253. [2023-02-17 00:26:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 218 states have (on average 1.2201834862385321) internal successors, (266), 233 states have internal predecessors, (266), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 00:26:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2023-02-17 00:26:39,890 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 39 [2023-02-17 00:26:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:39,891 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2023-02-17 00:26:39,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2023-02-17 00:26:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-17 00:26:39,893 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:39,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:39,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 00:26:39,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:39,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1154705564, now seen corresponding path program 1 times [2023-02-17 00:26:39,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:39,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805306243] [2023-02-17 00:26:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:39,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:40,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-17 00:26:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 00:26:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 00:26:41,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:41,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805306243] [2023-02-17 00:26:41,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805306243] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:26:41,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793139849] [2023-02-17 00:26:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:41,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:26:41,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:26:41,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:26:41,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 00:26:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:41,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 141 conjunts are in the unsatisfiable core [2023-02-17 00:26:41,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:26:41,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:26:41,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 70 [2023-02-17 00:26:41,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:26:41,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 111 [2023-02-17 00:26:41,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:26:41,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 107 [2023-02-17 00:26:41,426 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,429 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,436 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,441 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 82 [2023-02-17 00:26:41,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2023-02-17 00:26:41,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:26:41,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 137 treesize of output 256 [2023-02-17 00:26:41,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 108 [2023-02-17 00:26:41,648 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,655 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,657 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,660 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,665 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,667 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,668 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,672 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,673 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,677 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,681 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,685 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,687 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,688 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,692 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,693 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:26:41,866 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2023-02-17 00:26:41,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 00:26:42,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:26:42,074 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-02-17 00:26:42,079 INFO L158 Benchmark]: Toolchain (without parser) took 12887.89ms. Allocated memory was 148.9MB in the beginning and 408.9MB in the end (delta: 260.0MB). Free memory was 82.2MB in the beginning and 173.3MB in the end (delta: -91.1MB). Peak memory consumption was 171.3MB. Max. memory is 16.1GB. [2023-02-17 00:26:42,079 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 98.6MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 00:26:42,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.81ms. Allocated memory is still 148.9MB. Free memory was 81.9MB in the beginning and 103.2MB in the end (delta: -21.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2023-02-17 00:26:42,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.19ms. Allocated memory is still 148.9MB. Free memory was 103.2MB in the beginning and 100.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 00:26:42,081 INFO L158 Benchmark]: Boogie Preprocessor took 63.80ms. Allocated memory is still 148.9MB. Free memory was 100.7MB in the beginning and 98.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-17 00:26:42,081 INFO L158 Benchmark]: RCFGBuilder took 450.00ms. Allocated memory is still 148.9MB. Free memory was 97.7MB in the beginning and 74.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-02-17 00:26:42,081 INFO L158 Benchmark]: TraceAbstraction took 11847.07ms. Allocated memory was 148.9MB in the beginning and 408.9MB in the end (delta: 260.0MB). Free memory was 73.8MB in the beginning and 173.3MB in the end (delta: -99.4MB). Peak memory consumption was 161.1MB. Max. memory is 16.1GB. [2023-02-17 00:26:42,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 98.6MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.81ms. Allocated memory is still 148.9MB. Free memory was 81.9MB in the beginning and 103.2MB in the end (delta: -21.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.19ms. Allocated memory is still 148.9MB. Free memory was 103.2MB in the beginning and 100.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.80ms. Allocated memory is still 148.9MB. Free memory was 100.7MB in the beginning and 98.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 450.00ms. Allocated memory is still 148.9MB. Free memory was 97.7MB in the beginning and 74.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11847.07ms. Allocated memory was 148.9MB in the beginning and 408.9MB in the end (delta: 260.0MB). Free memory was 73.8MB in the beginning and 173.3MB in the end (delta: -99.4MB). Peak memory consumption was 161.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-02-17 00:26:42,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-manipulation/bubble_sort_linux-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:26:43,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:26:43,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:26:43,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:26:43,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:26:43,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:26:43,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:26:43,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:26:43,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:26:43,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:26:43,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:26:43,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:26:43,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:26:43,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:26:43,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:26:43,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:26:43,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:26:43,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:26:43,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:26:43,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:26:43,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:26:43,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:26:43,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:26:43,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:26:43,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:26:43,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:26:43,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:26:43,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:26:43,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:26:43,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:26:43,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:26:43,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:26:43,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:26:43,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:26:43,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:26:43,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:26:43,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:26:43,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:26:43,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:26:43,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:26:43,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:26:43,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-17 00:26:43,951 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:26:43,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:26:43,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:26:43,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:26:43,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:26:43,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:26:43,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:26:43,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:26:43,955 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:26:43,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:26:43,956 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:26:43,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:26:43,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:26:43,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:26:43,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:26:43,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:26:43,957 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 00:26:43,957 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 00:26:43,957 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 00:26:43,958 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:26:43,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:26:43,958 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:26:43,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:26:43,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:26:43,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:26:43,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:26:43,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:26:43,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:26:43,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:26:43,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:26:43,960 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 00:26:43,960 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 00:26:43,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:26:43,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:26:43,961 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:26:43,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:26:43,961 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 00:26:43,961 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:26:43,961 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2023-02-17 00:26:44,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:26:44,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:26:44,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:26:44,252 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:26:44,252 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:26:44,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-02-17 00:26:45,159 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:26:45,396 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:26:45,396 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-02-17 00:26:45,418 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ffb4c428/035cc4358a724ffc962c6ffa2a72e26d/FLAG082af77eb [2023-02-17 00:26:45,430 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ffb4c428/035cc4358a724ffc962c6ffa2a72e26d [2023-02-17 00:26:45,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:26:45,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:26:45,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:26:45,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:26:45,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:26:45,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:45,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70857e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45, skipping insertion in model container [2023-02-17 00:26:45,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:45,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:26:45,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:26:45,776 WARN L237 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-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-02-17 00:26:45,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:26:45,834 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-17 00:26:45,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:26:45,875 WARN L237 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-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-02-17 00:26:45,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:26:45,914 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:26:45,943 WARN L237 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-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-02-17 00:26:45,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:26:45,995 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:26:45,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45 WrapperNode [2023-02-17 00:26:45,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:26:45,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:26:45,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:26:45,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:26:46,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,056 INFO L138 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 113 [2023-02-17 00:26:46,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:26:46,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:26:46,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:26:46,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:26:46,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:26:46,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:26:46,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:26:46,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:26:46,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (1/1) ... [2023-02-17 00:26:46,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:26:46,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:26:46,170 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) [2023-02-17 00:26:46,188 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 [2023-02-17 00:26:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-17 00:26:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 00:26:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-02-17 00:26:46,210 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-02-17 00:26:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 00:26:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-17 00:26:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 00:26:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-17 00:26:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-02-17 00:26:46,211 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-02-17 00:26:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-17 00:26:46,211 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-17 00:26:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 00:26:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:26:46,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 00:26:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-02-17 00:26:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-02-17 00:26:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:26:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:26:46,376 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:26:46,378 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:26:46,785 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:26:46,789 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:26:46,789 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2023-02-17 00:26:46,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:26:46 BoogieIcfgContainer [2023-02-17 00:26:46,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:26:46,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:26:46,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:26:46,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:26:46,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:26:45" (1/3) ... [2023-02-17 00:26:46,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f05791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:26:46, skipping insertion in model container [2023-02-17 00:26:46,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:45" (2/3) ... [2023-02-17 00:26:46,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f05791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:26:46, skipping insertion in model container [2023-02-17 00:26:46,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:26:46" (3/3) ... [2023-02-17 00:26:46,799 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2023-02-17 00:26:46,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:26:46,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:26:46,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:26:46,859 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3201f80a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:26:46,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:26:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 88 states have (on average 1.75) internal successors, (154), 107 states have internal predecessors, (154), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-17 00:26:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 00:26:46,871 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:46,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:46,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash 844459879, now seen corresponding path program 1 times [2023-02-17 00:26:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:26:46,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299163777] [2023-02-17 00:26:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:46,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:26:46,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:26:46,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:26:46,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 00:26:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:46,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 00:26:46,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:26:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:46,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 00:26:46,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:26:46,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299163777] [2023-02-17 00:26:46,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299163777] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:46,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:46,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:26:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865603888] [2023-02-17 00:26:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:47,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:26:47,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:26:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:26:47,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:26:47,021 INFO L87 Difference]: Start difference. First operand has 117 states, 88 states have (on average 1.75) internal successors, (154), 107 states have internal predecessors, (154), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:47,073 INFO L93 Difference]: Finished difference Result 228 states and 395 transitions. [2023-02-17 00:26:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:26:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 00:26:47,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:47,082 INFO L225 Difference]: With dead ends: 228 [2023-02-17 00:26:47,082 INFO L226 Difference]: Without dead ends: 106 [2023-02-17 00:26:47,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:26:47,093 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:47,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:26:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-17 00:26:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-17 00:26:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 96 states have internal predecessors, (101), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 00:26:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2023-02-17 00:26:47,147 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 9 [2023-02-17 00:26:47,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:47,148 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2023-02-17 00:26:47,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2023-02-17 00:26:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 00:26:47,150 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:47,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:47,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-17 00:26:47,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:26:47,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:47,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1622181416, now seen corresponding path program 1 times [2023-02-17 00:26:47,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:26:47,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200443852] [2023-02-17 00:26:47,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:47,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:26:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:26:47,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:26:47,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 00:26:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:47,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 00:26:47,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:26:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:47,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 00:26:47,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:26:47,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200443852] [2023-02-17 00:26:47,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200443852] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:47,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:47,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 00:26:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834769771] [2023-02-17 00:26:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:47,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 00:26:47,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:26:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 00:26:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:26:47,541 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:47,668 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2023-02-17 00:26:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:26:47,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-02-17 00:26:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:47,670 INFO L225 Difference]: With dead ends: 108 [2023-02-17 00:26:47,671 INFO L226 Difference]: Without dead ends: 105 [2023-02-17 00:26:47,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:26:47,672 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 171 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:47,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 253 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:26:47,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-17 00:26:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-02-17 00:26:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 95 states have internal predecessors, (100), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 00:26:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2023-02-17 00:26:47,689 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 20 [2023-02-17 00:26:47,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:47,691 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2023-02-17 00:26:47,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:47,691 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2023-02-17 00:26:47,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 00:26:47,692 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:47,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:47,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 00:26:47,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:26:47,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash -845475890, now seen corresponding path program 1 times [2023-02-17 00:26:47,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:26:47,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342362335] [2023-02-17 00:26:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:47,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:26:47,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:26:47,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:26:47,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 00:26:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:48,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 00:26:48,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:26:48,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:26:48,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 00:26:48,128 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:26:48,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 398 [2023-02-17 00:26:48,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2023-02-17 00:26:48,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2023-02-17 00:26:48,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2023-02-17 00:27:24,305 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 00:27:26,321 INFO L190 IndexEqualityManager]: detected not equals via solver