./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-intel-ixgbevf-ixgbevf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-intel-ixgbevf-ixgbevf.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 807baa6191d907795e80ff5436f6f636b6dbcf7109bdc782ca0ac1b857ff64f7 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 10:50:12,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 10:50:12,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 10:50:12,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 10:50:12,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 10:50:12,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 10:50:12,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 10:50:12,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 10:50:12,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 10:50:12,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 10:50:12,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 10:50:12,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 10:50:12,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 10:50:12,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 10:50:12,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 10:50:12,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 10:50:12,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 10:50:12,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 10:50:12,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 10:50:12,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 10:50:12,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 10:50:12,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 10:50:12,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 10:50:12,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 10:50:12,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 10:50:12,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 10:50:12,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 10:50:12,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 10:50:12,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 10:50:12,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 10:50:12,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 10:50:12,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 10:50:12,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 10:50:12,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 10:50:12,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 10:50:12,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 10:50:12,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 10:50:12,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 10:50:12,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 10:50:12,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 10:50:12,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 10:50:12,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 10:50:13,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 10:50:13,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 10:50:13,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 10:50:13,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 10:50:13,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 10:50:13,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 10:50:13,018 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 10:50:13,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 10:50:13,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 10:50:13,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 10:50:13,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 10:50:13,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 10:50:13,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 10:50:13,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 10:50:13,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 10:50:13,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 10:50:13,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 10:50:13,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 10:50:13,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 10:50:13,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:50:13,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 10:50:13,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 10:50:13,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 10:50:13,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 10:50:13,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 10:50:13,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 10:50:13,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 10:50:13,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 10:50:13,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 10:50:13,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 807baa6191d907795e80ff5436f6f636b6dbcf7109bdc782ca0ac1b857ff64f7 [2021-11-04 10:50:13,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 10:50:13,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 10:50:13,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 10:50:13,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 10:50:13,235 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 10:50:13,236 INFO L432 ainManager$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-intel-ixgbevf-ixgbevf.cil.i [2021-11-04 10:50:13,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6e9d4fd/e3fddf4154e546479ed41971c74b69c4/FLAG930b34d9e [2021-11-04 10:50:14,028 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 10:50:14,029 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-intel-ixgbevf-ixgbevf.cil.i [2021-11-04 10:50:14,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6e9d4fd/e3fddf4154e546479ed41971c74b69c4/FLAG930b34d9e [2021-11-04 10:50:14,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6e9d4fd/e3fddf4154e546479ed41971c74b69c4 [2021-11-04 10:50:14,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 10:50:14,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 10:50:14,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 10:50:14,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 10:50:14,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 10:50:14,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:50:14" (1/1) ... [2021-11-04 10:50:14,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8adcfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:14, skipping insertion in model container [2021-11-04 10:50:14,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:50:14" (1/1) ... [2021-11-04 10:50:14,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 10:50:14,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 10:50:18,120 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-intel-ixgbevf-ixgbevf.cil.i[513173,513186] [2021-11-04 10:50:18,123 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-intel-ixgbevf-ixgbevf.cil.i[513320,513333] [2021-11-04 10:50:18,124 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-intel-ixgbevf-ixgbevf.cil.i[513459,513472] [2021-11-04 10:50:18,124 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-intel-ixgbevf-ixgbevf.cil.i[513617,513630] [2021-11-04 10:50:18,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:50:18,242 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 10:50:18,797 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-intel-ixgbevf-ixgbevf.cil.i[513173,513186] [2021-11-04 10:50:18,798 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-intel-ixgbevf-ixgbevf.cil.i[513320,513333] [2021-11-04 10:50:18,799 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-intel-ixgbevf-ixgbevf.cil.i[513459,513472] [2021-11-04 10:50:18,799 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-intel-ixgbevf-ixgbevf.cil.i[513617,513630] [2021-11-04 10:50:18,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:50:19,102 INFO L208 MainTranslator]: Completed translation [2021-11-04 10:50:19,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19 WrapperNode [2021-11-04 10:50:19,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 10:50:19,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 10:50:19,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 10:50:19,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 10:50:19,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:19,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:21,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 10:50:21,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 10:50:21,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 10:50:21,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 10:50:21,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:21,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:21,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:21,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:22,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:23,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:23,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:24,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 10:50:24,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 10:50:24,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 10:50:24,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 10:50:24,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (1/1) ... [2021-11-04 10:50:24,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:50:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 10:50:24,081 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) [2021-11-04 10:50:24,103 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 [2021-11-04 10:50:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2021-11-04 10:50:24,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2021-11-04 10:50:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 10:50:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2021-11-04 10:50:24,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2021-11-04 10:50:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 10:50:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 10:50:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 10:50:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 10:50:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 10:50:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 10:50:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2021-11-04 10:50:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2021-11-04 10:50:24,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2021-11-04 10:50:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2021-11-04 10:50:24,119 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-04 10:50:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-04 10:50:24,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 10:50:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 10:50:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 10:50:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 10:50:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-04 10:50:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2021-11-04 10:50:24,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2021-11-04 10:50:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 10:50:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 10:50:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-04 10:50:24,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-04 10:50:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 10:50:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2021-11-04 10:50:24,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2021-11-04 10:50:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-04 10:50:24,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-04 10:50:24,122 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2021-11-04 10:50:24,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2021-11-04 10:50:24,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 10:50:24,122 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2021-11-04 10:50:24,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2021-11-04 10:50:24,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 10:53:00,478 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 10:53:00,479 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-04 10:53:00,479 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-04 10:53:00,480 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 10:53:00,480 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 10:53:00,481 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-04 10:53:00,482 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 10:53:00,483 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 10:53:00,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 10:53:00,563 INFO L299 CfgBuilder]: Removed 11760 assume(true) statements. [2021-11-04 10:53:00,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:53:00 BoogieIcfgContainer [2021-11-04 10:53:00,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 10:53:00,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 10:53:00,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 10:53:00,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 10:53:00,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:50:14" (1/3) ... [2021-11-04 10:53:00,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bf3304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:53:00, skipping insertion in model container [2021-11-04 10:53:00,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:50:19" (2/3) ... [2021-11-04 10:53:00,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bf3304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:53:00, skipping insertion in model container [2021-11-04 10:53:00,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:53:00" (3/3) ... [2021-11-04 10:53:00,586 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-04 10:53:00,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 10:53:00,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-04 10:53:00,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 10:53:00,678 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 [2021-11-04 10:53:00,678 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-04 10:53:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 12350 states, 12043 states have (on average 1.3484181682305074) internal successors, (16239), 12046 states have internal predecessors, (16239), 292 states have call successors, (292), 11 states have call predecessors, (292), 11 states have return successors, (292), 292 states have call predecessors, (292), 292 states have call successors, (292) [2021-11-04 10:53:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-04 10:53:00,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:53:00,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:53:00,832 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)] === [2021-11-04 10:53:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:53:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash 181239163, now seen corresponding path program 1 times [2021-11-04 10:53:00,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:53:00,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553377807] [2021-11-04 10:53:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:53:00,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:53:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:53:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:53:01,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:53:01,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553377807] [2021-11-04 10:53:01,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553377807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:53:01,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:53:01,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:53:01,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472000817] [2021-11-04 10:53:01,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:53:01,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:53:01,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:53:01,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:53:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:53:01,924 INFO L87 Difference]: Start difference. First operand has 12350 states, 12043 states have (on average 1.3484181682305074) internal successors, (16239), 12046 states have internal predecessors, (16239), 292 states have call successors, (292), 11 states have call predecessors, (292), 11 states have return successors, (292), 292 states have call predecessors, (292), 292 states have call successors, (292) Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-04 10:53:04,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:53:14,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:53:16,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:53:24,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:53:27,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:53:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:53:56,839 INFO L93 Difference]: Finished difference Result 35611 states and 48396 transitions. [2021-11-04 10:53:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:53:56,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-04 10:53:56,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:53:56,965 INFO L225 Difference]: With dead ends: 35611 [2021-11-04 10:53:56,965 INFO L226 Difference]: Without dead ends: 23009 [2021-11-04 10:53:57,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:53:57,028 INFO L933 BasicCegarLoop]: 1188 mSDtfsCounter, 15422 mSDsluCounter, 16075 mSDsCounter, 0 mSdLazyCounter, 30436 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47564.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15422 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 30448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.24ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30436 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53814.41ms IncrementalHoareTripleChecker+Time [2021-11-04 10:53:57,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15422 Valid, 2079 Invalid, 30448 Unknown, 0 Unchecked, 79.24ms Time], IncrementalHoareTripleChecker [7 Valid, 30436 Invalid, 5 Unknown, 0 Unchecked, 53814.41ms Time] [2021-11-04 10:53:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23009 states. [2021-11-04 10:53:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23009 to 22898. [2021-11-04 10:53:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22898 states, 22288 states have (on average 1.3069364680545585) internal successors, (29129), 22291 states have internal predecessors, (29129), 584 states have call successors, (584), 22 states have call predecessors, (584), 22 states have return successors, (584), 584 states have call predecessors, (584), 584 states have call successors, (584) [2021-11-04 10:53:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22898 states to 22898 states and 30297 transitions. [2021-11-04 10:53:57,864 INFO L78 Accepts]: Start accepts. Automaton has 22898 states and 30297 transitions. Word has length 105 [2021-11-04 10:53:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:53:57,866 INFO L470 AbstractCegarLoop]: Abstraction has 22898 states and 30297 transitions. [2021-11-04 10:53:57,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-04 10:53:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 22898 states and 30297 transitions. [2021-11-04 10:53:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-04 10:53:57,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:53:57,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:53:57,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 10:53:57,881 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 10:53:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:53:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash -205178606, now seen corresponding path program 1 times [2021-11-04 10:53:57,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:53:57,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009915469] [2021-11-04 10:53:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:53:57,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:53:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:53:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:53:58,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:53:58,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009915469] [2021-11-04 10:53:58,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009915469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:53:58,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:53:58,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:53:58,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367667052] [2021-11-04 10:53:58,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:53:58,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:53:58,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:53:58,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:53:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:53:58,418 INFO L87 Difference]: Start difference. First operand 22898 states and 30297 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-04 10:54:00,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:54:09,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:54:11,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:54:19,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:54:22,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:54:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:54:50,324 INFO L93 Difference]: Finished difference Result 42168 states and 55885 transitions. [2021-11-04 10:54:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:54:50,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2021-11-04 10:54:50,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:54:50,381 INFO L225 Difference]: With dead ends: 42168 [2021-11-04 10:54:50,382 INFO L226 Difference]: Without dead ends: 19506 [2021-11-04 10:54:50,454 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 [2021-11-04 10:54:50,455 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 5235 mSDsluCounter, 15432 mSDsCounter, 0 mSdLazyCounter, 29831 mSolverCounterSat, 21 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45373.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5235 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 29857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.94ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 29831 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51139.56ms IncrementalHoareTripleChecker+Time [2021-11-04 10:54:50,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5235 Valid, 1280 Invalid, 29857 Unknown, 0 Unchecked, 57.94ms Time], IncrementalHoareTripleChecker [21 Valid, 29831 Invalid, 5 Unknown, 0 Unchecked, 51139.56ms Time] [2021-11-04 10:54:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19506 states. [2021-11-04 10:54:50,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19506 to 19375. [2021-11-04 10:54:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19375 states, 18822 states have (on average 1.3084156837743066) internal successors, (24627), 18825 states have internal predecessors, (24627), 516 states have call successors, (516), 33 states have call predecessors, (516), 33 states have return successors, (516), 516 states have call predecessors, (516), 516 states have call successors, (516) [2021-11-04 10:54:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19375 states to 19375 states and 25659 transitions. [2021-11-04 10:54:51,039 INFO L78 Accepts]: Start accepts. Automaton has 19375 states and 25659 transitions. Word has length 123 [2021-11-04 10:54:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:54:51,040 INFO L470 AbstractCegarLoop]: Abstraction has 19375 states and 25659 transitions. [2021-11-04 10:54:51,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-04 10:54:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 19375 states and 25659 transitions. [2021-11-04 10:54:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-04 10:54:51,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:54:51,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:54:51,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 10:54:51,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 10:54:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:54:51,057 INFO L85 PathProgramCache]: Analyzing trace with hash -546423109, now seen corresponding path program 1 times [2021-11-04 10:54:51,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:54:51,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992716017] [2021-11-04 10:54:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:54:51,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:54:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:54:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:54:51,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:54:51,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992716017] [2021-11-04 10:54:51,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992716017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:54:51,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:54:51,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:54:51,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858210661] [2021-11-04 10:54:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:54:51,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:54:51,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:54:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:54:51,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:54:51,486 INFO L87 Difference]: Start difference. First operand 19375 states and 25659 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-04 10:54:53,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:55:04,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:55:06,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:55:16,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:55:21,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:56:00,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:56:00,732 INFO L93 Difference]: Finished difference Result 49773 states and 65988 transitions. [2021-11-04 10:56:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:56:00,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-04 10:56:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:56:00,817 INFO L225 Difference]: With dead ends: 49773 [2021-11-04 10:56:00,817 INFO L226 Difference]: Without dead ends: 34433 [2021-11-04 10:56:00,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:56:00,855 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 14923 mSDsluCounter, 15480 mSDsCounter, 0 mSdLazyCounter, 34800 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59632.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14923 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 34810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.49ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34800 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68219.43ms IncrementalHoareTripleChecker+Time [2021-11-04 10:56:00,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14923 Valid, 1572 Invalid, 34810 Unknown, 0 Unchecked, 59.49ms Time], IncrementalHoareTripleChecker [5 Valid, 34800 Invalid, 5 Unknown, 0 Unchecked, 68219.43ms Time] [2021-11-04 10:56:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34433 states. [2021-11-04 10:56:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34433 to 34322. [2021-11-04 10:56:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34322 states, 33343 states have (on average 1.3093003029121555) internal successors, (43656), 33346 states have internal predecessors, (43656), 920 states have call successors, (920), 55 states have call predecessors, (920), 55 states have return successors, (920), 920 states have call predecessors, (920), 920 states have call successors, (920) [2021-11-04 10:56:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34322 states to 34322 states and 45496 transitions. [2021-11-04 10:56:01,770 INFO L78 Accepts]: Start accepts. Automaton has 34322 states and 45496 transitions. Word has length 134 [2021-11-04 10:56:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:56:01,771 INFO L470 AbstractCegarLoop]: Abstraction has 34322 states and 45496 transitions. [2021-11-04 10:56:01,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-04 10:56:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 34322 states and 45496 transitions. [2021-11-04 10:56:01,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-04 10:56:01,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:56:01,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:56:01,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 10:56:01,779 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)] === [2021-11-04 10:56:01,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:56:01,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1826286787, now seen corresponding path program 1 times [2021-11-04 10:56:01,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:56:01,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72541113] [2021-11-04 10:56:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:56:01,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:56:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:56:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:56:02,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:56:02,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72541113] [2021-11-04 10:56:02,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72541113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:56:02,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:56:02,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:56:02,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86767811] [2021-11-04 10:56:02,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:56:02,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:56:02,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:56:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:56:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:56:02,412 INFO L87 Difference]: Start difference. First operand 34322 states and 45496 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-04 10:56:04,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:56:15,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:56:17,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:56:30,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:56:36,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:57:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:57:29,795 INFO L93 Difference]: Finished difference Result 79669 states and 105666 transitions. [2021-11-04 10:57:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:57:29,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-04 10:57:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:57:29,952 INFO L225 Difference]: With dead ends: 79669 [2021-11-04 10:57:29,953 INFO L226 Difference]: Without dead ends: 49382 [2021-11-04 10:57:30,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:57:30,031 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 14925 mSDsluCounter, 15479 mSDsCounter, 0 mSdLazyCounter, 44174 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74627.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14925 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 44185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.92ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44174 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85932.53ms IncrementalHoareTripleChecker+Time [2021-11-04 10:57:30,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14925 Valid, 1752 Invalid, 44185 Unknown, 0 Unchecked, 72.92ms Time], IncrementalHoareTripleChecker [6 Valid, 44174 Invalid, 5 Unknown, 0 Unchecked, 85932.53ms Time] [2021-11-04 10:57:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49382 states. [2021-11-04 10:57:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49382 to 49264. [2021-11-04 10:57:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49264 states, 47859 states have (on average 1.3096805198604233) internal successors, (62680), 47862 states have internal predecessors, (62680), 1324 states have call successors, (1324), 77 states have call predecessors, (1324), 77 states have return successors, (1324), 1324 states have call predecessors, (1324), 1324 states have call successors, (1324) [2021-11-04 10:57:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49264 states to 49264 states and 65328 transitions. [2021-11-04 10:57:31,772 INFO L78 Accepts]: Start accepts. Automaton has 49264 states and 65328 transitions. Word has length 134 [2021-11-04 10:57:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:57:31,773 INFO L470 AbstractCegarLoop]: Abstraction has 49264 states and 65328 transitions. [2021-11-04 10:57:31,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-04 10:57:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 49264 states and 65328 transitions. [2021-11-04 10:57:31,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-04 10:57:31,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:57:31,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:57:31,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 10:57:31,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 10:57:31,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:57:31,780 INFO L85 PathProgramCache]: Analyzing trace with hash 711513943, now seen corresponding path program 1 times [2021-11-04 10:57:31,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:57:31,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757594871] [2021-11-04 10:57:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:57:31,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:57:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:57:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 10:57:32,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:57:32,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757594871] [2021-11-04 10:57:32,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757594871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:57:32,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:57:32,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 10:57:32,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658328621] [2021-11-04 10:57:32,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:57:32,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:57:32,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:57:32,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:57:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:57:32,564 INFO L87 Difference]: Start difference. First operand 49264 states and 65328 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-04 10:57:34,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:57:47,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:57:49,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:58:06,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:58:15,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:59:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:59:36,339 INFO L93 Difference]: Finished difference Result 94308 states and 125090 transitions. [2021-11-04 10:59:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:59:36,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 135 [2021-11-04 10:59:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:59:36,562 INFO L225 Difference]: With dead ends: 94308 [2021-11-04 10:59:36,563 INFO L226 Difference]: Without dead ends: 94275 [2021-11-04 10:59:36,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:59:36,608 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 15130 mSDsluCounter, 31027 mSDsCounter, 0 mSdLazyCounter, 44499 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104359.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15130 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 44508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 166.74ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44499 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121550.08ms IncrementalHoareTripleChecker+Time [2021-11-04 10:59:36,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15130 Valid, 2336 Invalid, 44508 Unknown, 0 Unchecked, 166.74ms Time], IncrementalHoareTripleChecker [4 Valid, 44499 Invalid, 5 Unknown, 0 Unchecked, 121550.08ms Time] [2021-11-04 10:59:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94275 states. [2021-11-04 10:59:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94275 to 94164. [2021-11-04 10:59:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94164 states, 91481 states have (on average 1.3099769351012778) internal successors, (119838), 91484 states have internal predecessors, (119838), 2536 states have call successors, (2536), 143 states have call predecessors, (2536), 143 states have return successors, (2536), 2536 states have call predecessors, (2536), 2536 states have call successors, (2536) [2021-11-04 10:59:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94164 states to 94164 states and 124910 transitions. [2021-11-04 10:59:39,236 INFO L78 Accepts]: Start accepts. Automaton has 94164 states and 124910 transitions. Word has length 135 [2021-11-04 10:59:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:59:39,236 INFO L470 AbstractCegarLoop]: Abstraction has 94164 states and 124910 transitions. [2021-11-04 10:59:39,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-04 10:59:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 94164 states and 124910 transitions. [2021-11-04 10:59:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-04 10:59:39,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:59:39,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:59:39,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 10:59:39,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 10:59:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:59:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash -446938572, now seen corresponding path program 1 times [2021-11-04 10:59:39,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:59:39,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282112794] [2021-11-04 10:59:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:59:39,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:59:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:59:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:59:39,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:59:39,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282112794] [2021-11-04 10:59:39,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282112794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:59:39,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:59:39,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:59:39,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928180445] [2021-11-04 10:59:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:59:39,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:59:39,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:59:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:59:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:59:39,836 INFO L87 Difference]: Start difference. First operand 94164 states and 124910 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-11-04 10:59:41,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:59:55,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:59:58,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:00:11,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:00:17,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:01:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 11:01:26,391 INFO L93 Difference]: Finished difference Result 207265 states and 275140 transitions. [2021-11-04 11:01:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 11:01:26,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2021-11-04 11:01:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 11:01:26,762 INFO L225 Difference]: With dead ends: 207265 [2021-11-04 11:01:26,762 INFO L226 Difference]: Without dead ends: 117136 [2021-11-04 11:01:26,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:01:26,968 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 5232 mSDsluCounter, 15423 mSDsCounter, 0 mSdLazyCounter, 34854 mSolverCounterSat, 15 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87465.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5232 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 34874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.11ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34854 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103690.23ms IncrementalHoareTripleChecker+Time [2021-11-04 11:01:26,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5232 Valid, 1392 Invalid, 34874 Unknown, 0 Unchecked, 100.11ms Time], IncrementalHoareTripleChecker [15 Valid, 34854 Invalid, 5 Unknown, 0 Unchecked, 103690.23ms Time] [2021-11-04 11:01:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117136 states. [2021-11-04 11:01:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117136 to 116994. [2021-11-04 11:01:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116994 states, 113573 states have (on average 1.3107868947725252) internal successors, (148870), 113576 states have internal predecessors, (148870), 3208 states have call successors, (3208), 209 states have call predecessors, (3208), 209 states have return successors, (3208), 3208 states have call predecessors, (3208), 3208 states have call successors, (3208) [2021-11-04 11:01:30,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116994 states to 116994 states and 155286 transitions. [2021-11-04 11:01:30,049 INFO L78 Accepts]: Start accepts. Automaton has 116994 states and 155286 transitions. Word has length 155 [2021-11-04 11:01:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 11:01:30,050 INFO L470 AbstractCegarLoop]: Abstraction has 116994 states and 155286 transitions. [2021-11-04 11:01:30,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2021-11-04 11:01:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 116994 states and 155286 transitions. [2021-11-04 11:01:30,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-04 11:01:30,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 11:01:30,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 11:01:30,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 11:01:30,104 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 11:01:30,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 11:01:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1661091947, now seen corresponding path program 1 times [2021-11-04 11:01:30,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 11:01:30,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560300771] [2021-11-04 11:01:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 11:01:30,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 11:01:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 11:01:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 11:01:30,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 11:01:30,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560300771] [2021-11-04 11:01:30,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560300771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 11:01:30,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 11:01:30,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 11:01:30,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167951432] [2021-11-04 11:01:30,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 11:01:30,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 11:01:30,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 11:01:30,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 11:01:30,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:01:30,459 INFO L87 Difference]: Start difference. First operand 116994 states and 155286 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2021-11-04 11:01:32,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:02:18,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:02:20,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:02:32,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:02:35,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15