./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 536967bc2d119b5b01611d52124221c0068f635deed7f674213322a832d07143 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 21:04:08,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 21:04:08,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 21:04:08,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 21:04:08,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 21:04:08,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 21:04:08,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 21:04:08,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 21:04:08,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 21:04:08,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 21:04:08,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 21:04:08,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 21:04:08,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 21:04:08,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 21:04:08,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 21:04:08,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 21:04:08,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 21:04:08,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 21:04:08,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 21:04:08,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 21:04:08,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 21:04:08,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 21:04:08,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 21:04:08,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 21:04:08,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 21:04:08,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 21:04:08,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 21:04:08,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 21:04:08,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 21:04:08,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 21:04:08,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 21:04:08,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 21:04:08,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 21:04:08,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 21:04:08,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 21:04:08,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 21:04:08,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 21:04:08,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 21:04:08,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 21:04:08,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 21:04:08,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 21:04:08,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 21:04:08,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 21:04:08,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 21:04:08,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 21:04:08,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 21:04:08,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 21:04:08,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 21:04:08,923 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 21:04:08,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 21:04:08,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 21:04:08,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 21:04:08,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 21:04:08,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 21:04:08,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 21:04:08,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 21:04:08,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 21:04:08,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 21:04:08,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 21:04:08,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 21:04:08,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 21:04:08,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 21:04:08,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 21:04:08,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 21:04:08,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 21:04:08,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 21:04:08,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 21:04:08,927 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 21:04:08,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 21:04:08,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 21:04:08,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 21:04:08,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 536967bc2d119b5b01611d52124221c0068f635deed7f674213322a832d07143 [2021-11-05 21:04:09,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 21:04:09,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 21:04:09,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 21:04:09,242 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 21:04:09,244 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 21:04:09,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-05 21:04:09,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cbf1ccb9/ab9f0953dc704e0eb8a94f08c0231ad1/FLAGd795952e8 [2021-11-05 21:04:10,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 21:04:10,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-05 21:04:10,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cbf1ccb9/ab9f0953dc704e0eb8a94f08c0231ad1/FLAGd795952e8 [2021-11-05 21:04:10,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cbf1ccb9/ab9f0953dc704e0eb8a94f08c0231ad1 [2021-11-05 21:04:10,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 21:04:10,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 21:04:10,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 21:04:10,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 21:04:10,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 21:04:10,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 09:04:10" (1/1) ... [2021-11-05 21:04:10,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a09d549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:10, skipping insertion in model container [2021-11-05 21:04:10,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 09:04:10" (1/1) ... [2021-11-05 21:04:10,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 21:04:10,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 21:04:12,858 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314317,314330] [2021-11-05 21:04:12,861 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314464,314477] [2021-11-05 21:04:12,861 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314603,314616] [2021-11-05 21:04:12,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314761,314774] [2021-11-05 21:04:12,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 21:04:12,942 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 21:04:13,258 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314317,314330] [2021-11-05 21:04:13,259 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314464,314477] [2021-11-05 21:04:13,270 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314603,314616] [2021-11-05 21:04:13,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314761,314774] [2021-11-05 21:04:13,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 21:04:13,429 INFO L208 MainTranslator]: Completed translation [2021-11-05 21:04:13,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13 WrapperNode [2021-11-05 21:04:13,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 21:04:13,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 21:04:13,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 21:04:13,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 21:04:13,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:13,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:20,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 21:04:20,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 21:04:20,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 21:04:20,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 21:04:20,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:20,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:21,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:21,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:22,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:22,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:23,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:23,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 21:04:23,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 21:04:23,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 21:04:23,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 21:04:23,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (1/1) ... [2021-11-05 21:04:23,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 21:04:23,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 21:04:23,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 21:04:23,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 21:04:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 21:04:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 21:04:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 21:04:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 21:04:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 21:04:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 21:04:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 21:04:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 21:04:23,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 21:04:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 21:04:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 21:04:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 21:04:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 21:04:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 21:04:23,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 21:04:23,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 21:05:01,581 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 21:05:01,581 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-05 21:05:01,582 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 21:05:01,582 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 21:05:01,586 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 21:05:01,587 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 21:05:01,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 21:05:01,672 INFO L299 CfgBuilder]: Removed 36084 assume(true) statements. [2021-11-05 21:05:01,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 09:05:01 BoogieIcfgContainer [2021-11-05 21:05:01,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 21:05:01,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 21:05:01,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 21:05:01,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 21:05:01,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 09:04:10" (1/3) ... [2021-11-05 21:05:01,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4198ab2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 09:05:01, skipping insertion in model container [2021-11-05 21:05:01,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 09:04:13" (2/3) ... [2021-11-05 21:05:01,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4198ab2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 09:05:01, skipping insertion in model container [2021-11-05 21:05:01,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 09:05:01" (3/3) ... [2021-11-05 21:05:01,702 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-05 21:05:01,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 21:05:01,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-05 21:05:01,810 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 21:05:01,814 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 21:05:01,815 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-05 21:05:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 23101 states, 23097 states have (on average 1.2038792916829026) internal successors, (27806), 23100 states have internal predecessors, (27806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 21:05:02,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:05:02,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:05:02,061 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 21:05:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:05:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash -201446684, now seen corresponding path program 1 times [2021-11-05 21:05:02,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:05:02,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795232290] [2021-11-05 21:05:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:05:02,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:05:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:05:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:05:02,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:05:02,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795232290] [2021-11-05 21:05:02,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795232290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:05:02,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:05:02,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:05:02,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028424161] [2021-11-05 21:05:02,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:05:02,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:05:02,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:05:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:05:02,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:02,781 INFO L87 Difference]: Start difference. First operand has 23101 states, 23097 states have (on average 1.2038792916829026) internal successors, (27806), 23100 states have internal predecessors, (27806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:04,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:05:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:05:06,834 INFO L93 Difference]: Finished difference Result 69048 states and 83093 transitions. [2021-11-05 21:05:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:05:06,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-05 21:05:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:05:07,059 INFO L225 Difference]: With dead ends: 69048 [2021-11-05 21:05:07,060 INFO L226 Difference]: Without dead ends: 45781 [2021-11-05 21:05:07,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:07,136 INFO L933 BasicCegarLoop]: 27742 mSDtfsCounter, 27561 mSDsluCounter, 27690 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2083.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27561 SdHoareTripleChecker+Valid, 55432 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 130.94ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2173.71ms IncrementalHoareTripleChecker+Time [2021-11-05 21:05:07,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27561 Valid, 55432 Invalid, 34 Unknown, 0 Unchecked, 130.94ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2173.71ms Time] [2021-11-05 21:05:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45781 states. [2021-11-05 21:05:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45781 to 45779. [2021-11-05 21:05:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45779 states, 45775 states have (on average 1.1966357181867833) internal successors, (54776), 45778 states have internal predecessors, (54776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45779 states to 45779 states and 54776 transitions. [2021-11-05 21:05:08,560 INFO L78 Accepts]: Start accepts. Automaton has 45779 states and 54776 transitions. Word has length 43 [2021-11-05 21:05:08,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:05:08,561 INFO L470 AbstractCegarLoop]: Abstraction has 45779 states and 54776 transitions. [2021-11-05 21:05:08,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 45779 states and 54776 transitions. [2021-11-05 21:05:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 21:05:08,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:05:08,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:05:08,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 21:05:08,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 21:05:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:05:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1056831426, now seen corresponding path program 1 times [2021-11-05 21:05:08,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:05:08,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632709381] [2021-11-05 21:05:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:05:08,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:05:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:05:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:05:08,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:05:08,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632709381] [2021-11-05 21:05:08,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632709381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:05:08,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:05:08,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:05:08,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967393668] [2021-11-05 21:05:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:05:08,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:05:08,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:05:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:05:08,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:08,748 INFO L87 Difference]: Start difference. First operand 45779 states and 54776 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:05:09,904 INFO L93 Difference]: Finished difference Result 68671 states and 82167 transitions. [2021-11-05 21:05:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:05:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-05 21:05:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:05:10,024 INFO L225 Difference]: With dead ends: 68671 [2021-11-05 21:05:10,025 INFO L226 Difference]: Without dead ends: 45779 [2021-11-05 21:05:10,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:10,078 INFO L933 BasicCegarLoop]: 27465 mSDtfsCounter, 14 mSDsluCounter, 27449 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54914 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.69ms IncrementalHoareTripleChecker+Time [2021-11-05 21:05:10,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 54914 Invalid, 3 Unknown, 0 Unchecked, 48.52ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 5.69ms Time] [2021-11-05 21:05:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45779 states. [2021-11-05 21:05:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45779 to 45779. [2021-11-05 21:05:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45779 states, 45775 states have (on average 1.1966138722009831) internal successors, (54775), 45778 states have internal predecessors, (54775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45779 states to 45779 states and 54775 transitions. [2021-11-05 21:05:11,200 INFO L78 Accepts]: Start accepts. Automaton has 45779 states and 54775 transitions. Word has length 67 [2021-11-05 21:05:11,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:05:11,200 INFO L470 AbstractCegarLoop]: Abstraction has 45779 states and 54775 transitions. [2021-11-05 21:05:11,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 45779 states and 54775 transitions. [2021-11-05 21:05:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 21:05:11,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:05:11,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-05 21:05:11,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 21:05:11,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 21:05:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:05:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash 140076434, now seen corresponding path program 1 times [2021-11-05 21:05:11,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:05:11,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621582433] [2021-11-05 21:05:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:05:11,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:05:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:05:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:05:11,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:05:11,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621582433] [2021-11-05 21:05:11,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621582433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:05:11,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:05:11,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:05:11,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624189124] [2021-11-05 21:05:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:05:11,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:05:11,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:05:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:05:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:11,430 INFO L87 Difference]: Start difference. First operand 45779 states and 54775 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:13,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:05:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:05:14,870 INFO L93 Difference]: Finished difference Result 91093 states and 109008 transitions. [2021-11-05 21:05:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:05:14,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-05 21:05:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:05:14,993 INFO L225 Difference]: With dead ends: 91093 [2021-11-05 21:05:14,994 INFO L226 Difference]: Without dead ends: 45382 [2021-11-05 21:05:15,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:15,078 INFO L933 BasicCegarLoop]: 27443 mSDtfsCounter, 13430 mSDsluCounter, 27390 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2152.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13430 SdHoareTripleChecker+Valid, 54833 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.81ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2276.03ms IncrementalHoareTripleChecker+Time [2021-11-05 21:05:15,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13430 Valid, 54833 Invalid, 100 Unknown, 0 Unchecked, 46.81ms Time], IncrementalHoareTripleChecker [20 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 2276.03ms Time] [2021-11-05 21:05:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45382 states. [2021-11-05 21:05:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45382 to 45360. [2021-11-05 21:05:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45360 states, 45356 states have (on average 1.196269512302672) internal successors, (54258), 45359 states have internal predecessors, (54258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45360 states to 45360 states and 54258 transitions. [2021-11-05 21:05:16,011 INFO L78 Accepts]: Start accepts. Automaton has 45360 states and 54258 transitions. Word has length 68 [2021-11-05 21:05:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:05:16,014 INFO L470 AbstractCegarLoop]: Abstraction has 45360 states and 54258 transitions. [2021-11-05 21:05:16,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 45360 states and 54258 transitions. [2021-11-05 21:05:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 21:05:16,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:05:16,173 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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] [2021-11-05 21:05:16,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 21:05:16,173 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 21:05:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:05:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1734962658, now seen corresponding path program 1 times [2021-11-05 21:05:16,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:05:16,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832951439] [2021-11-05 21:05:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:05:16,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:05:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:05:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:05:16,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:05:16,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832951439] [2021-11-05 21:05:16,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832951439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:05:16,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:05:16,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:05:16,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157254802] [2021-11-05 21:05:16,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:05:16,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:05:16,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:05:16,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:05:16,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:16,381 INFO L87 Difference]: Start difference. First operand 45360 states and 54258 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:18,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:05:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:05:19,971 INFO L93 Difference]: Finished difference Result 113469 states and 135756 transitions. [2021-11-05 21:05:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:05:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 21:05:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:05:20,184 INFO L225 Difference]: With dead ends: 113469 [2021-11-05 21:05:20,185 INFO L226 Difference]: Without dead ends: 79360 [2021-11-05 21:05:20,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:20,271 INFO L933 BasicCegarLoop]: 40832 mSDtfsCounter, 27308 mSDsluCounter, 27440 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2062.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27308 SdHoareTripleChecker+Valid, 68272 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.19ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2157.12ms IncrementalHoareTripleChecker+Time [2021-11-05 21:05:20,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27308 Valid, 68272 Invalid, 30 Unknown, 0 Unchecked, 60.19ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2157.12ms Time] [2021-11-05 21:05:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79360 states. [2021-11-05 21:05:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79360 to 79358. [2021-11-05 21:05:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79358 states, 79354 states have (on average 1.1963732137006327) internal successors, (94937), 79357 states have internal predecessors, (94937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79358 states to 79358 states and 94937 transitions. [2021-11-05 21:05:22,442 INFO L78 Accepts]: Start accepts. Automaton has 79358 states and 94937 transitions. Word has length 75 [2021-11-05 21:05:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:05:22,442 INFO L470 AbstractCegarLoop]: Abstraction has 79358 states and 94937 transitions. [2021-11-05 21:05:22,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 79358 states and 94937 transitions. [2021-11-05 21:05:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 21:05:22,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:05:22,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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] [2021-11-05 21:05:22,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 21:05:22,453 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 21:05:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:05:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash 713894304, now seen corresponding path program 1 times [2021-11-05 21:05:22,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:05:22,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57580524] [2021-11-05 21:05:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:05:22,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:05:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:05:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:05:22,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:05:22,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57580524] [2021-11-05 21:05:22,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57580524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:05:22,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:05:22,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:05:22,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217685128] [2021-11-05 21:05:22,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:05:22,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:05:22,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:05:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:05:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:22,620 INFO L87 Difference]: Start difference. First operand 79358 states and 94937 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:24,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:05:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:05:27,060 INFO L93 Difference]: Finished difference Result 181467 states and 217118 transitions. [2021-11-05 21:05:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:05:27,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 21:05:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:05:27,420 INFO L225 Difference]: With dead ends: 181467 [2021-11-05 21:05:27,420 INFO L226 Difference]: Without dead ends: 113360 [2021-11-05 21:05:27,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:27,535 INFO L933 BasicCegarLoop]: 54768 mSDtfsCounter, 27310 mSDsluCounter, 27439 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2070.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27310 SdHoareTripleChecker+Valid, 82207 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.52ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2189.34ms IncrementalHoareTripleChecker+Time [2021-11-05 21:05:27,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27310 Valid, 82207 Invalid, 32 Unknown, 0 Unchecked, 52.52ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2189.34ms Time] [2021-11-05 21:05:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113360 states. [2021-11-05 21:05:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113360 to 113351. [2021-11-05 21:05:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113351 states, 113347 states have (on average 1.196423372475672) internal successors, (135611), 113350 states have internal predecessors, (135611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113351 states to 113351 states and 135611 transitions. [2021-11-05 21:05:30,352 INFO L78 Accepts]: Start accepts. Automaton has 113351 states and 135611 transitions. Word has length 75 [2021-11-05 21:05:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:05:30,352 INFO L470 AbstractCegarLoop]: Abstraction has 113351 states and 135611 transitions. [2021-11-05 21:05:30,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 113351 states and 135611 transitions. [2021-11-05 21:05:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 21:05:30,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:05:30,360 INFO L514 BasicCegarLoop]: 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, 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] [2021-11-05 21:05:30,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 21:05:30,361 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 21:05:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:05:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2068466793, now seen corresponding path program 1 times [2021-11-05 21:05:30,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:05:30,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369843562] [2021-11-05 21:05:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:05:30,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:05:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:05:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 21:05:30,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:05:30,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369843562] [2021-11-05 21:05:30,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369843562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:05:30,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:05:30,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 21:05:30,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437004138] [2021-11-05 21:05:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:05:30,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 21:05:30,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:05:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 21:05:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 21:05:30,572 INFO L87 Difference]: Start difference. First operand 113351 states and 135611 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:05:33,141 INFO L93 Difference]: Finished difference Result 113351 states and 135611 transitions. [2021-11-05 21:05:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 21:05:33,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-05 21:05:33,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:05:33,394 INFO L225 Difference]: With dead ends: 113351 [2021-11-05 21:05:33,394 INFO L226 Difference]: Without dead ends: 102134 [2021-11-05 21:05:33,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 21:05:33,453 INFO L933 BasicCegarLoop]: 27456 mSDtfsCounter, 27397 mSDsluCounter, 27456 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27397 SdHoareTripleChecker+Valid, 54912 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.82ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.19ms IncrementalHoareTripleChecker+Time [2021-11-05 21:05:33,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27397 Valid, 54912 Invalid, 10 Unknown, 0 Unchecked, 55.82ms Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 71.19ms Time] [2021-11-05 21:05:33,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102134 states. [2021-11-05 21:05:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102134 to 102134. [2021-11-05 21:05:35,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102134 states, 102133 states have (on average 1.1964203538523297) internal successors, (122194), 102133 states have internal predecessors, (122194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102134 states to 102134 states and 122194 transitions. [2021-11-05 21:05:36,057 INFO L78 Accepts]: Start accepts. Automaton has 102134 states and 122194 transitions. Word has length 75 [2021-11-05 21:05:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 21:05:36,058 INFO L470 AbstractCegarLoop]: Abstraction has 102134 states and 122194 transitions. [2021-11-05 21:05:36,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 102134 states and 122194 transitions. [2021-11-05 21:05:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 21:05:36,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 21:05:36,094 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 21:05:36,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 21:05:36,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 21:05:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 21:05:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1420995789, now seen corresponding path program 1 times [2021-11-05 21:05:36,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 21:05:36,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469050627] [2021-11-05 21:05:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 21:05:36,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 21:05:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 21:05:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 21:05:36,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 21:05:36,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469050627] [2021-11-05 21:05:36,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469050627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 21:05:36,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 21:05:36,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 21:05:36,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651739332] [2021-11-05 21:05:36,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 21:05:36,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 21:05:36,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 21:05:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 21:05:36,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:36,268 INFO L87 Difference]: Start difference. First operand 102134 states and 122194 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 21:05:38,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 21:05:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 21:05:41,573 INFO L93 Difference]: Finished difference Result 226591 states and 271132 transitions. [2021-11-05 21:05:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 21:05:41,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-05 21:05:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 21:05:42,094 INFO L225 Difference]: With dead ends: 226591 [2021-11-05 21:05:42,095 INFO L226 Difference]: Without dead ends: 135708 [2021-11-05 21:05:42,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 21:05:42,250 INFO L933 BasicCegarLoop]: 40830 mSDtfsCounter, 13398 mSDsluCounter, 27361 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2153.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13398 SdHoareTripleChecker+Valid, 68191 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.34ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2267.99ms IncrementalHoareTripleChecker+Time [2021-11-05 21:05:42,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13398 Valid, 68191 Invalid, 86 Unknown, 0 Unchecked, 42.34ms Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2267.99ms Time] [2021-11-05 21:05:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135708 states.