./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/dll_of_dll-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 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:48:10,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:48:10,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:48:10,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:48:10,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:48:10,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:48:10,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:48:10,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:48:10,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:48:10,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:48:10,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:48:10,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:48:10,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:48:10,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:48:10,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:48:10,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:48:10,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:48:10,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:48:10,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:48:10,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:48:10,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:48:10,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:48:10,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:48:10,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:48:10,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:48:10,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:48:10,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:48:10,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:48:10,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:48:10,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:48:10,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:48:10,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:48:10,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:48:10,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:48:10,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:48:10,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:48:10,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:48:10,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:48:10,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:48:10,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:48:10,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:48:10,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:48:10,671 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:48:10,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:48:10,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:48:10,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:48:10,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:48:10,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:48:10,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:48:10,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:48:10,676 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:48:10,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:48:10,680 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:48:10,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:48:10,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:48:10,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:48:10,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:48:10,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:48:10,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:48:10,682 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:48:10,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:48:10,682 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:48:10,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:48:10,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:48:10,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:48:10,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:48:10,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:48:10,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:48:10,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:48:10,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:48:10,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:48:10,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:48:10,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:48:10,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:48:10,685 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:48:10,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:48:10,685 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:48:10,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2023-02-16 00:48:10,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:48:10,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:48:10,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:48:10,929 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:48:10,930 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:48:10,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2023-02-16 00:48:12,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:48:12,231 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:48:12,232 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2023-02-16 00:48:12,243 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1e0cfe2/edca63f1c81542a0880dde08f8b06b9d/FLAGa354e3fc4 [2023-02-16 00:48:12,254 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de1e0cfe2/edca63f1c81542a0880dde08f8b06b9d [2023-02-16 00:48:12,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:48:12,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:48:12,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:48:12,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:48:12,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:48:12,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41401a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12, skipping insertion in model container [2023-02-16 00:48:12,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:48:12,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:48:12,564 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/dll_of_dll-2.i[22634,22647] [2023-02-16 00:48:12,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:48:12,640 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:48:12,674 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/dll_of_dll-2.i[22634,22647] [2023-02-16 00:48:12,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:48:12,723 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:48:12,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12 WrapperNode [2023-02-16 00:48:12,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:48:12,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:48:12,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:48:12,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:48:12,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,770 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2023-02-16 00:48:12,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:48:12,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:48:12,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:48:12,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:48:12,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,812 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:48:12,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:48:12,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:48:12,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:48:12,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (1/1) ... [2023-02-16 00:48:12,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:48:12,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:48:12,851 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) [2023-02-16 00:48:12,853 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 [2023-02-16 00:48:12,882 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-16 00:48:12,883 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-16 00:48:12,883 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2023-02-16 00:48:12,883 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2023-02-16 00:48:12,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 00:48:12,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:48:12,883 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2023-02-16 00:48:12,884 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2023-02-16 00:48:12,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 00:48:12,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 00:48:12,884 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-16 00:48:12,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-16 00:48:12,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 00:48:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:48:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 00:48:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2023-02-16 00:48:12,885 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2023-02-16 00:48:12,885 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2023-02-16 00:48:12,885 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2023-02-16 00:48:12,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:48:12,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:48:12,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:48:13,031 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:48:13,033 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:48:13,455 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:48:13,470 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:48:13,471 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2023-02-16 00:48:13,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:48:13 BoogieIcfgContainer [2023-02-16 00:48:13,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:48:13,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:48:13,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:48:13,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:48:13,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:48:12" (1/3) ... [2023-02-16 00:48:13,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ba8b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:48:13, skipping insertion in model container [2023-02-16 00:48:13,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:48:12" (2/3) ... [2023-02-16 00:48:13,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ba8b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:48:13, skipping insertion in model container [2023-02-16 00:48:13,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:48:13" (3/3) ... [2023-02-16 00:48:13,481 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2023-02-16 00:48:13,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:48:13,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:48:13,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:48:13,541 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;@543d27a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:48:13,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:48:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-16 00:48:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-16 00:48:13,554 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:48:13,554 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-02-16 00:48:13,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:48:13,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:48:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2023-02-16 00:48:13,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:48:13,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009073472] [2023-02-16 00:48:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:13,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:48:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:13,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 00:48:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-16 00:48:13,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:48:13,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009073472] [2023-02-16 00:48:13,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009073472] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:48:13,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:48:13,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:48:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505161527] [2023-02-16 00:48:13,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:48:13,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:48:13,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:48:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:48:14,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:48:14,006 INFO L87 Difference]: Start difference. First operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:48:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:48:14,167 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2023-02-16 00:48:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:48:14,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2023-02-16 00:48:14,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:48:14,183 INFO L225 Difference]: With dead ends: 251 [2023-02-16 00:48:14,183 INFO L226 Difference]: Without dead ends: 120 [2023-02-16 00:48:14,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:48:14,194 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 38 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:48:14,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 181 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:48:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-16 00:48:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-02-16 00:48:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 108 states have internal predecessors, (115), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-16 00:48:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-16 00:48:14,249 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2023-02-16 00:48:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:48:14,249 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-16 00:48:14,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:48:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-16 00:48:14,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 00:48:14,252 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:48:14,252 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-02-16 00:48:14,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:48:14,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:48:14,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:48:14,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2023-02-16 00:48:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:48:14,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796748949] [2023-02-16 00:48:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:14,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:48:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 00:48:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:48:15,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:48:15,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796748949] [2023-02-16 00:48:15,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796748949] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:48:15,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412025176] [2023-02-16 00:48:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:15,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:48:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:48:15,053 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) [2023-02-16 00:48:15,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:48:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:15,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 00:48:15,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:48:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:48:15,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:48:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:48:15,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412025176] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:48:15,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:48:15,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2023-02-16 00:48:15,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164096160] [2023-02-16 00:48:15,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:48:15,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:48:15,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:48:15,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:48:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:48:15,582 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-16 00:48:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:48:16,048 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2023-02-16 00:48:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 00:48:16,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2023-02-16 00:48:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:48:16,053 INFO L225 Difference]: With dead ends: 250 [2023-02-16 00:48:16,053 INFO L226 Difference]: Without dead ends: 133 [2023-02-16 00:48:16,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-16 00:48:16,059 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 00:48:16,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1037 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 00:48:16,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-16 00:48:16,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-02-16 00:48:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 116 states have internal predecessors, (124), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-16 00:48:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2023-02-16 00:48:16,085 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2023-02-16 00:48:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:48:16,086 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2023-02-16 00:48:16,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-16 00:48:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2023-02-16 00:48:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-16 00:48:16,094 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:48:16,095 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:48:16,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:48:16,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:48:16,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:48:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:48:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2023-02-16 00:48:16,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:48:16,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166990265] [2023-02-16 00:48:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:48:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 00:48:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-16 00:48:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 00:48:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-16 00:48:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 00:48:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:19,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-16 00:48:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 00:48:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-16 00:48:19,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:48:19,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166990265] [2023-02-16 00:48:19,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166990265] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:48:19,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507251005] [2023-02-16 00:48:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:19,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:48:19,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:48:19,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:48:19,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:48:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-16 00:48:19,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:48:19,759 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-16 00:48:19,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-16 00:48:19,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-16 00:48:19,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-02-16 00:48:19,856 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-02-16 00:48:19,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2023-02-16 00:48:19,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2023-02-16 00:48:20,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:48:20,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 94 [2023-02-16 00:48:20,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-02-16 00:48:20,321 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 00:48:20,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 8 [2023-02-16 00:48:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-16 00:48:20,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:48:20,737 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:48:20,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 104 treesize of output 107 [2023-02-16 00:48:20,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 120 treesize of output 116 [2023-02-16 00:48:20,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 116 treesize of output 114 [2023-02-16 00:48:20,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 18 [2023-02-16 00:48:20,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2023-02-16 00:48:20,809 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-16 00:48:20,812 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-16 00:48:20,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:48:20,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 218 treesize of output 215 [2023-02-16 00:48:20,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 250 treesize of output 242 [2023-02-16 00:48:20,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 242 treesize of output 238 [2023-02-16 00:48:20,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2023-02-16 00:48:20,930 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-16 00:48:20,934 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-16 00:48:20,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 18 [2023-02-16 00:48:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-16 00:48:21,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507251005] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:48:21,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:48:21,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 29 [2023-02-16 00:48:21,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516140526] [2023-02-16 00:48:21,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:48:21,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-16 00:48:21,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:48:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-16 00:48:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=746, Unknown=2, NotChecked=0, Total=812 [2023-02-16 00:48:21,083 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 29 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 11 states have call successors, (22), 4 states have call predecessors, (22), 9 states have return successors, (18), 12 states have call predecessors, (18), 9 states have call successors, (18) [2023-02-16 00:48:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:48:22,888 INFO L93 Difference]: Finished difference Result 334 states and 417 transitions. [2023-02-16 00:48:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-16 00:48:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 11 states have call successors, (22), 4 states have call predecessors, (22), 9 states have return successors, (18), 12 states have call predecessors, (18), 9 states have call successors, (18) Word has length 110 [2023-02-16 00:48:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:48:22,892 INFO L225 Difference]: With dead ends: 334 [2023-02-16 00:48:22,892 INFO L226 Difference]: Without dead ends: 205 [2023-02-16 00:48:22,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 236 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=191, Invalid=2150, Unknown=11, NotChecked=0, Total=2352 [2023-02-16 00:48:22,894 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 276 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 61 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:48:22,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1757 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1796 Invalid, 17 Unknown, 0 Unchecked, 1.0s Time] [2023-02-16 00:48:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-02-16 00:48:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 166. [2023-02-16 00:48:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 126 states have (on average 1.253968253968254) internal successors, (158), 144 states have internal predecessors, (158), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2023-02-16 00:48:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2023-02-16 00:48:22,909 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2023-02-16 00:48:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:48:22,910 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2023-02-16 00:48:22,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 11 states have call successors, (22), 4 states have call predecessors, (22), 9 states have return successors, (18), 12 states have call predecessors, (18), 9 states have call successors, (18) [2023-02-16 00:48:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2023-02-16 00:48:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-16 00:48:22,911 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:48:22,911 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-02-16 00:48:22,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 00:48:23,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-16 00:48:23,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:48:23,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:48:23,119 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2023-02-16 00:48:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:48:23,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524369801] [2023-02-16 00:48:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:23,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:48:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:24,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 00:48:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-16 00:48:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 00:48:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-16 00:48:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 00:48:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-16 00:48:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 00:48:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-16 00:48:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:48:25,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524369801] [2023-02-16 00:48:25,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524369801] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:48:25,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859539629] [2023-02-16 00:48:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:48:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:48:25,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:48:25,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:48:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:25,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 57 conjunts are in the unsatisfiable core [2023-02-16 00:48:25,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:48:25,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 00:48:25,860 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 8 treesize of output 4 [2023-02-16 00:48:26,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:48:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-16 00:48:26,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:48:27,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859539629] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:48:27,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:48:27,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2023-02-16 00:48:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520945142] [2023-02-16 00:48:27,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:48:27,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 00:48:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:48:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 00:48:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=524, Unknown=18, NotChecked=0, Total=600 [2023-02-16 00:48:27,026 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-16 00:48:39,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:48:39,387 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2023-02-16 00:48:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 00:48:39,387 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) Word has length 113 [2023-02-16 00:48:39,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:48:39,389 INFO L225 Difference]: With dead ends: 342 [2023-02-16 00:48:39,389 INFO L226 Difference]: Without dead ends: 180 [2023-02-16 00:48:39,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=228, Invalid=1642, Unknown=22, NotChecked=0, Total=1892 [2023-02-16 00:48:39,391 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 122 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 28 mSolverCounterUnsat, 58 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 58 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-16 00:48:39,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1394 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1628 Invalid, 58 Unknown, 0 Unchecked, 1.5s Time] [2023-02-16 00:48:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-16 00:48:39,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-02-16 00:48:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 135 states have (on average 1.237037037037037) internal successors, (167), 153 states have internal predecessors, (167), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-16 00:48:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2023-02-16 00:48:39,407 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 113 [2023-02-16 00:48:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:48:39,408 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2023-02-16 00:48:39,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-16 00:48:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2023-02-16 00:48:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-16 00:48:39,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:48:39,409 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-02-16 00:48:39,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:48:39,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:48:39,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:48:39,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:48:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2023-02-16 00:48:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:48:39,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845369708] [2023-02-16 00:48:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:48:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:47,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 00:48:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-16 00:48:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:47,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 00:48:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-16 00:48:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:48,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 00:48:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-02-16 00:48:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat