./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.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 29824587617da9a02b15e9129afbb9cf5ee59d8d3dbb506aa4fe0ed84097e2f1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 20:54:14,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:54:14,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:54:14,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:54:14,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:54:14,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:54:14,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:54:14,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:54:14,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:54:14,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:54:14,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:54:14,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:54:14,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:54:14,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:54:14,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:54:14,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:54:14,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:54:15,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:54:15,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:54:15,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:54:15,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:54:15,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:54:15,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:54:15,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:54:15,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:54:15,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:54:15,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:54:15,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:54:15,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:54:15,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:54:15,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:54:15,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:54:15,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:54:15,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:54:15,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:54:15,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:54:15,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:54:15,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:54:15,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:54:15,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:54:15,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:54:15,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:54:15,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:54:15,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:54:15,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:54:15,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:54:15,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:54:15,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:54:15,070 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:54:15,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:54:15,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:54:15,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:54:15,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:54:15,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:54:15,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:54:15,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:54:15,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:54:15,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:54:15,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:54:15,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:54:15,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:54:15,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:54:15,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:54:15,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:54:15,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:54:15,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:54:15,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:54:15,074 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:54:15,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:54:15,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:54:15,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:54:15,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29824587617da9a02b15e9129afbb9cf5ee59d8d3dbb506aa4fe0ed84097e2f1 [2021-11-02 20:54:15,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:54:15,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:54:15,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:54:15,309 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:54:15,310 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:54:15,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-02 20:54:15,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22497e394/3144f8e727784ae49a1ced2c2c533de2/FLAGedcc4e667 [2021-11-02 20:54:16,158 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:54:16,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-02 20:54:16,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22497e394/3144f8e727784ae49a1ced2c2c533de2/FLAGedcc4e667 [2021-11-02 20:54:16,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22497e394/3144f8e727784ae49a1ced2c2c533de2 [2021-11-02 20:54:16,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:54:16,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:54:16,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:54:16,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:54:16,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:54:16,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:16" (1/1) ... [2021-11-02 20:54:16,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1d9725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:16, skipping insertion in model container [2021-11-02 20:54:16,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:16" (1/1) ... [2021-11-02 20:54:16,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:54:16,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:54:19,302 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[314027,314040] [2021-11-02 20:54:19,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:54:19,850 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:54:20,235 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[314027,314040] [2021-11-02 20:54:20,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:54:20,416 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:54:20,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20 WrapperNode [2021-11-02 20:54:20,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:54:20,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:54:20,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:54:20,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:54:20,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:20,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:21,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:54:21,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:54:21,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:54:21,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:54:21,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:21,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:21,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:21,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:21,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:21,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:22,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:22,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:54:22,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:54:22,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:54:22,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:54:22,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (1/1) ... [2021-11-02 20:54:22,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:54:22,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:54:22,325 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) [2021-11-02 20:54:22,395 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 [2021-11-02 20:54:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_cmd [2021-11-02 20:54:22,455 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_cmd [2021-11-02 20:54:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure handle_bmc_rsp [2021-11-02 20:54:22,455 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_bmc_rsp [2021-11-02 20:54:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure handle_oem_get_msg_cmd [2021-11-02 20:54:22,455 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_oem_get_msg_cmd [2021-11-02 20:54:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 20:54:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:54:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 20:54:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2021-11-02 20:54:22,455 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2021-11-02 20:54:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_err_response [2021-11-02 20:54:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_err_response [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-02 20:54:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 20:54:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure handle_one_recv_msg [2021-11-02 20:54:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_one_recv_msg [2021-11-02 20:54:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:54:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:54:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2021-11-02 20:54:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2021-11-02 20:54:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2021-11-02 20:54:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2021-11-02 20:54:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:54:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 20:54:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-02 20:54:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-02 20:54:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-02 20:54:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 20:54:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_msg_received [2021-11-02 20:54:22,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_msg_received [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure handle_read_event_rsp [2021-11-02 20:54:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_read_event_rsp [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_cmd [2021-11-02 20:54:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_cmd [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2021-11-02 20:54:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2021-11-02 20:54:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2021-11-02 20:54:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_rsp [2021-11-02 20:54:22,459 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_rsp [2021-11-02 20:54:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:54:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_rsp [2021-11-02 20:54:22,459 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_rsp [2021-11-02 20:54:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2021-11-02 20:54:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2021-11-02 20:54:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure intf_err_seq [2021-11-02 20:54:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_err_seq [2021-11-02 20:54:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure smi_recv_tasklet [2021-11-02 20:54:22,463 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_recv_tasklet [2021-11-02 20:54:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2021-11-02 20:54:22,463 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2021-11-02 20:54:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:54:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2021-11-02 20:54:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2021-11-02 20:54:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 20:54:32,707 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 20:54:32,707 INFO L299 CfgBuilder]: Removed 3392 assume(true) statements. [2021-11-02 20:54:32,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:32 BoogieIcfgContainer [2021-11-02 20:54:32,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 20:54:32,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 20:54:32,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 20:54:32,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 20:54:32,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:54:16" (1/3) ... [2021-11-02 20:54:32,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b2c80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:32, skipping insertion in model container [2021-11-02 20:54:32,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:20" (2/3) ... [2021-11-02 20:54:32,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b2c80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:32, skipping insertion in model container [2021-11-02 20:54:32,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:32" (3/3) ... [2021-11-02 20:54:32,726 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-02 20:54:32,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 20:54:32,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 20:54:32,810 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 20:54:32,821 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 [2021-11-02 20:54:32,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 20:54:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 4129 states, 4014 states have (on average 1.5343796711509716) internal successors, (6159), 4045 states have internal predecessors, (6159), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-02 20:54:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-02 20:54:32,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:54:32,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:54:32,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 20:54:32,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:54:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1503774384, now seen corresponding path program 1 times [2021-11-02 20:54:32,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:54:32,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485367038] [2021-11-02 20:54:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:54:32,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:54:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:54:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:54:33,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:54:33,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485367038] [2021-11-02 20:54:33,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485367038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:54:33,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:54:33,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:54:33,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424973962] [2021-11-02 20:54:33,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 20:54:33,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:54:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 20:54:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:54:33,786 INFO L87 Difference]: Start difference. First operand has 4129 states, 4014 states have (on average 1.5343796711509716) internal successors, (6159), 4045 states have internal predecessors, (6159), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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) [2021-11-02 20:54:35,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:02,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:04,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:10,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:55:12,578 INFO L93 Difference]: Finished difference Result 8254 states and 12713 transitions. [2021-11-02 20:55:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 20:55:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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 210 [2021-11-02 20:55:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:55:12,618 INFO L225 Difference]: With dead ends: 8254 [2021-11-02 20:55:12,618 INFO L226 Difference]: Without dead ends: 4107 [2021-11-02 20:55:12,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:55:12,638 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6059 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35508.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 6062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6059 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38022.33ms IncrementalHoareTripleChecker+Time [2021-11-02 20:55:12,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 6062 Unknown, 0 Unchecked, 54.51ms Time], IncrementalHoareTripleChecker [0 Valid, 6059 Invalid, 3 Unknown, 0 Unchecked, 38022.33ms Time] [2021-11-02 20:55:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2021-11-02 20:55:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4107. [2021-11-02 20:55:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4107 states, 3993 states have (on average 1.5126471324818431) internal successors, (6040), 4023 states have internal predecessors, (6040), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-02 20:55:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 6200 transitions. [2021-11-02 20:55:12,847 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 6200 transitions. Word has length 210 [2021-11-02 20:55:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:55:12,848 INFO L470 AbstractCegarLoop]: Abstraction has 4107 states and 6200 transitions. [2021-11-02 20:55:12,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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) [2021-11-02 20:55:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 6200 transitions. [2021-11-02 20:55:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-02 20:55:12,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:55:12,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:55:12,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 20:55:12,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 20:55:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:55:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash -394926700, now seen corresponding path program 1 times [2021-11-02 20:55:12,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:55:12,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028193580] [2021-11-02 20:55:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:55:12,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:55:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:55:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:55:13,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:55:13,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028193580] [2021-11-02 20:55:13,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028193580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:55:13,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:55:13,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:55:13,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539313487] [2021-11-02 20:55:13,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:55:13,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:55:13,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:55:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:55:13,539 INFO L87 Difference]: Start difference. First operand 4107 states and 6200 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2021-11-02 20:55:15,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:24,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:45,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:07,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:11,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:14,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:16,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:18,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:21,525 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 [] [2021-11-02 20:56:25,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:56:25,106 INFO L93 Difference]: Finished difference Result 8057 states and 12249 transitions. [2021-11-02 20:56:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:56:25,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 210 [2021-11-02 20:56:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:56:25,129 INFO L225 Difference]: With dead ends: 8057 [2021-11-02 20:56:25,130 INFO L226 Difference]: Without dead ends: 4114 [2021-11-02 20:56:25,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:56:25,142 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 6164 mSDsCounter, 0 mSdLazyCounter, 12065 mSolverCounterSat, 12 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66990.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 12082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 109.29ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 12065 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70807.38ms IncrementalHoareTripleChecker+Time [2021-11-02 20:56:25,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 12082 Unknown, 0 Unchecked, 109.29ms Time], IncrementalHoareTripleChecker [12 Valid, 12065 Invalid, 5 Unknown, 0 Unchecked, 70807.38ms Time] [2021-11-02 20:56:25,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2021-11-02 20:56:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 4114. [2021-11-02 20:56:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4114 states, 4000 states have (on average 1.51175) internal successors, (6047), 4030 states have internal predecessors, (6047), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-02 20:56:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 6207 transitions. [2021-11-02 20:56:25,261 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 6207 transitions. Word has length 210 [2021-11-02 20:56:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:56:25,267 INFO L470 AbstractCegarLoop]: Abstraction has 4114 states and 6207 transitions. [2021-11-02 20:56:25,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2021-11-02 20:56:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 6207 transitions. [2021-11-02 20:56:25,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-02 20:56:25,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:56:25,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:56:25,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 20:56:25,271 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 20:56:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:56:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1341189571, now seen corresponding path program 1 times [2021-11-02 20:56:25,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:56:25,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135542029] [2021-11-02 20:56:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:56:25,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:56:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:56:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 20:56:25,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:56:25,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135542029] [2021-11-02 20:56:25,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135542029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:56:25,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:56:25,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:56:25,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153892497] [2021-11-02 20:56:25,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:56:25,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:56:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:56:25,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:56:25,817 INFO L87 Difference]: Start difference. First operand 4114 states and 6207 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2021-11-02 20:56:27,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:48,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:51,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:56,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:08,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:11,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:20,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:24,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:27,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:57:32,136 INFO L93 Difference]: Finished difference Result 8056 states and 12242 transitions. [2021-11-02 20:57:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:57:32,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2021-11-02 20:57:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:57:32,161 INFO L225 Difference]: With dead ends: 8056 [2021-11-02 20:57:32,161 INFO L226 Difference]: Without dead ends: 4118 [2021-11-02 20:57:32,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:57:32,174 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 6163 mSDsCounter, 0 mSdLazyCounter, 12066 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62388.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 12078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.06ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12066 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65807.68ms IncrementalHoareTripleChecker+Time [2021-11-02 20:57:32,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 12078 Unknown, 0 Unchecked, 64.06ms Time], IncrementalHoareTripleChecker [6 Valid, 12066 Invalid, 6 Unknown, 0 Unchecked, 65807.68ms Time] [2021-11-02 20:57:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2021-11-02 20:57:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 4118. [2021-11-02 20:57:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4118 states, 4004 states have (on average 1.5112387612387612) internal successors, (6051), 4034 states have internal predecessors, (6051), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-02 20:57:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 6211 transitions. [2021-11-02 20:57:32,299 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 6211 transitions. Word has length 217 [2021-11-02 20:57:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:57:32,301 INFO L470 AbstractCegarLoop]: Abstraction has 4118 states and 6211 transitions. [2021-11-02 20:57:32,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2021-11-02 20:57:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 6211 transitions. [2021-11-02 20:57:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-02 20:57:32,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:57:32,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:57:32,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 20:57:32,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 20:57:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:57:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1613649805, now seen corresponding path program 1 times [2021-11-02 20:57:32,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:57:32,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781384552] [2021-11-02 20:57:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:57:32,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:57:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:57:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:57:32,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:57:32,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781384552] [2021-11-02 20:57:32,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781384552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:57:32,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:57:32,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:57:32,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483426132] [2021-11-02 20:57:32,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:57:32,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:57:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:57:32,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:57:32,899 INFO L87 Difference]: Start difference. First operand 4118 states and 6211 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2021-11-02 20:57:34,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:41,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:51,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:55,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:11,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:18,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:22,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:26,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:37,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:42,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:58:46,679 INFO L93 Difference]: Finished difference Result 11791 states and 17991 transitions. [2021-11-02 20:58:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:58:46,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 221 [2021-11-02 20:58:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:58:46,720 INFO L225 Difference]: With dead ends: 11791 [2021-11-02 20:58:46,720 INFO L226 Difference]: Without dead ends: 7881 [2021-11-02 20:58:46,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:58:46,736 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 5826 mSDsluCounter, 6128 mSDsCounter, 0 mSdLazyCounter, 12009 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68682.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5829 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 12019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 91.79ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12009 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72948.64ms IncrementalHoareTripleChecker+Time [2021-11-02 20:58:46,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5829 Valid, 398 Invalid, 12019 Unknown, 0 Unchecked, 91.79ms Time], IncrementalHoareTripleChecker [3 Valid, 12009 Invalid, 7 Unknown, 0 Unchecked, 72948.64ms Time] [2021-11-02 20:58:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2021-11-02 20:58:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7877. [2021-11-02 20:58:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7877 states, 7661 states have (on average 1.5239524866205456) internal successors, (11675), 7710 states have internal predecessors, (11675), 158 states have call successors, (158), 48 states have call predecessors, (158), 48 states have return successors, (161), 154 states have call predecessors, (161), 158 states have call successors, (161) [2021-11-02 20:58:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7877 states to 7877 states and 11994 transitions. [2021-11-02 20:58:46,985 INFO L78 Accepts]: Start accepts. Automaton has 7877 states and 11994 transitions. Word has length 221 [2021-11-02 20:58:46,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:58:46,986 INFO L470 AbstractCegarLoop]: Abstraction has 7877 states and 11994 transitions. [2021-11-02 20:58:46,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2021-11-02 20:58:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7877 states and 11994 transitions. [2021-11-02 20:58:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-02 20:58:46,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:58:46,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:58:46,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 20:58:46,992 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 20:58:46,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:58:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1751637605, now seen corresponding path program 1 times [2021-11-02 20:58:46,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:58:46,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398544580] [2021-11-02 20:58:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:58:46,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:58:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:58:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:58:47,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:58:47,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398544580] [2021-11-02 20:58:47,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398544580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:58:47,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:58:47,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:58:47,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113109643] [2021-11-02 20:58:47,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:58:47,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:58:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:58:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:58:47,602 INFO L87 Difference]: Start difference. First operand 7877 states and 11994 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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) [2021-11-02 20:58:49,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:05,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:10,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:35,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:43,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:52,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:59,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:01,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:00:04,644 INFO L93 Difference]: Finished difference Result 23128 states and 35403 transitions. [2021-11-02 21:00:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:00:04,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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 225 [2021-11-02 21:00:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:00:04,714 INFO L225 Difference]: With dead ends: 23128 [2021-11-02 21:00:04,715 INFO L226 Difference]: Without dead ends: 15459 [2021-11-02 21:00:04,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:00:04,741 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 5925 mSDsluCounter, 5925 mSDsCounter, 0 mSdLazyCounter, 11804 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71159.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5926 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 11812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.06ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11804 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76024.59ms IncrementalHoareTripleChecker+Time [2021-11-02 21:00:04,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5926 Valid, 399 Invalid, 11812 Unknown, 0 Unchecked, 75.06ms Time], IncrementalHoareTripleChecker [4 Valid, 11804 Invalid, 4 Unknown, 0 Unchecked, 76024.59ms Time] [2021-11-02 21:00:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15459 states. [2021-11-02 21:00:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15459 to 15431. [2021-11-02 21:00:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15431 states, 15010 states have (on average 1.5299133910726181) internal successors, (22964), 15098 states have internal predecessors, (22964), 315 states have call successors, (315), 96 states have call predecessors, (315), 96 states have return successors, (322), 307 states have call predecessors, (322), 315 states have call successors, (322) [2021-11-02 21:00:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15431 states to 15431 states and 23601 transitions. [2021-11-02 21:00:05,178 INFO L78 Accepts]: Start accepts. Automaton has 15431 states and 23601 transitions. Word has length 225 [2021-11-02 21:00:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:00:05,179 INFO L470 AbstractCegarLoop]: Abstraction has 15431 states and 23601 transitions. [2021-11-02 21:00:05,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 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) [2021-11-02 21:00:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15431 states and 23601 transitions. [2021-11-02 21:00:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 21:00:05,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:00:05,184 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:00:05,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 21:00:05,184 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 21:00:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:00:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1263681034, now seen corresponding path program 1 times [2021-11-02 21:00:05,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:00:05,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789940100] [2021-11-02 21:00:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:00:05,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:00:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:00:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:00:05,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:00:05,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789940100] [2021-11-02 21:00:05,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789940100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:00:05,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:00:05,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:00:05,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772751031] [2021-11-02 21:00:05,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:00:05,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:00:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:00:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:00:05,713 INFO L87 Difference]: Start difference. First operand 15431 states and 23601 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2021-11-02 21:00:07,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:19,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:46,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:48,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:53,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:58,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:20,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:24,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:33,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:35,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:39,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:44,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:54,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:57,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:03,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:16,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:19,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:20,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:23,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:02:27,442 INFO L93 Difference]: Finished difference Result 36187 states and 55483 transitions. [2021-11-02 21:02:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:02:27,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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 227 [2021-11-02 21:02:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:02:27,512 INFO L225 Difference]: With dead ends: 36187 [2021-11-02 21:02:27,513 INFO L226 Difference]: Without dead ends: 20964 [2021-11-02 21:02:27,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:02:27,551 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 6386 mSDsluCounter, 14554 mSDsCounter, 0 mSdLazyCounter, 24287 mSolverCounterSat, 35 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133187.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6388 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 24334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 198.39ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 24287 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140353.56ms IncrementalHoareTripleChecker+Time [2021-11-02 21:02:27,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6388 Valid, 702 Invalid, 24334 Unknown, 0 Unchecked, 198.39ms Time], IncrementalHoareTripleChecker [35 Valid, 24287 Invalid, 12 Unknown, 0 Unchecked, 140353.56ms Time] [2021-11-02 21:02:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20964 states. [2021-11-02 21:02:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20964 to 20879. [2021-11-02 21:02:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20879 states, 20282 states have (on average 1.5328863031259246) internal successors, (31090), 20404 states have internal predecessors, (31090), 443 states have call successors, (443), 144 states have call predecessors, (443), 144 states have return successors, (454), 431 states have call predecessors, (454), 443 states have call successors, (454) [2021-11-02 21:02:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20879 states to 20879 states and 31987 transitions. [2021-11-02 21:02:28,056 INFO L78 Accepts]: Start accepts. Automaton has 20879 states and 31987 transitions. Word has length 227 [2021-11-02 21:02:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:02:28,057 INFO L470 AbstractCegarLoop]: Abstraction has 20879 states and 31987 transitions. [2021-11-02 21:02:28,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2021-11-02 21:02:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 20879 states and 31987 transitions. [2021-11-02 21:02:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-02 21:02:28,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:02:28,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:02:28,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 21:02:28,066 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 21:02:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:02:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash -121999775, now seen corresponding path program 1 times [2021-11-02 21:02:28,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:02:28,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577150852] [2021-11-02 21:02:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:02:28,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:02:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:02:28,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-02 21:02:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:02:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-11-02 21:02:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:02:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:02:28,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:02:28,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577150852] [2021-11-02 21:02:28,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577150852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:02:28,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:02:28,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:02:28,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381078875] [2021-11-02 21:02:28,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:02:28,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:02:28,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:02:28,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:02:28,637 INFO L87 Difference]: Start difference. First operand 20879 states and 31987 transitions. Second operand has 6 states, 6 states have (on average 42.5) internal successors, (255), 5 states have internal predecessors, (255), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 21:02:30,729 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 [] [2021-11-02 21:02:38,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:02:59,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:03:03,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:03:08,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:03:35,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:03:40,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:03:50,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:03:54,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:03:58,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:02,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:06,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:09,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:12,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:16,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:20,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:25,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:04:41,210 INFO L93 Difference]: Finished difference Result 72450 states and 112042 transitions. [2021-11-02 21:04:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 21:04:41,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 5 states have internal predecessors, (255), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 262 [2021-11-02 21:04:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:04:41,435 INFO L225 Difference]: With dead ends: 72450 [2021-11-02 21:04:41,435 INFO L226 Difference]: Without dead ends: 51779 [2021-11-02 21:04:41,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 201.91ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-02 21:04:41,504 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 16887 mSDsluCounter, 14569 mSDsCounter, 0 mSdLazyCounter, 22804 mSolverCounterSat, 813 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122902.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16940 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 23630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 226.40ms SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 22804 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130409.18ms IncrementalHoareTripleChecker+Time [2021-11-02 21:04:41,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16940 Valid, 582 Invalid, 23630 Unknown, 0 Unchecked, 226.40ms Time], IncrementalHoareTripleChecker [813 Valid, 22804 Invalid, 13 Unknown, 0 Unchecked, 130409.18ms Time] [2021-11-02 21:04:41,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51779 states. [2021-11-02 21:04:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51779 to 50241. [2021-11-02 21:04:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50241 states, 48576 states have (on average 1.5329380764163374) internal successors, (74464), 48911 states have internal predecessors, (74464), 1163 states have call successors, (1163), 408 states have call predecessors, (1163), 492 states have return successors, (1853), 1183 states have call predecessors, (1853), 1163 states have call successors, (1853) [2021-11-02 21:04:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50241 states to 50241 states and 77480 transitions. [2021-11-02 21:04:42,918 INFO L78 Accepts]: Start accepts. Automaton has 50241 states and 77480 transitions. Word has length 262 [2021-11-02 21:04:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:04:42,918 INFO L470 AbstractCegarLoop]: Abstraction has 50241 states and 77480 transitions. [2021-11-02 21:04:42,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 5 states have internal predecessors, (255), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 21:04:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 50241 states and 77480 transitions. [2021-11-02 21:04:42,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-02 21:04:42,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:04:42,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:04:42,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 21:04:42,932 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 21:04:42,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:04:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1466897104, now seen corresponding path program 1 times [2021-11-02 21:04:42,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:04:42,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591237711] [2021-11-02 21:04:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:04:42,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:04:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:04:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-02 21:04:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:04:43,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-02 21:04:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:04:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:04:43,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:04:43,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591237711] [2021-11-02 21:04:43,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591237711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:04:43,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:04:43,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:04:43,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854327859] [2021-11-02 21:04:43,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:04:43,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:04:43,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:04:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:04:43,486 INFO L87 Difference]: Start difference. First operand 50241 states and 77480 transitions. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 5 states have internal predecessors, (256), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 21:04:45,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:04:53,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:05:21,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:05:23,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:05:27,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:05:30,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:00,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:02,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:07,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:21,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:28,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:34,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:42,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:06:58,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:07:16,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:07:18,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:07:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:07:33,333 INFO L93 Difference]: Finished difference Result 187329 states and 291887 transitions. [2021-11-02 21:07:33,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 21:07:33,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 5 states have internal predecessors, (256), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 263 [2021-11-02 21:07:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:07:34,269 INFO L225 Difference]: With dead ends: 187329 [2021-11-02 21:07:34,269 INFO L226 Difference]: Without dead ends: 137296 [2021-11-02 21:07:34,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 189.94ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-02 21:07:34,551 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 9318 mSDsluCounter, 24558 mSDsCounter, 0 mSdLazyCounter, 33137 mSolverCounterSat, 374 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156808.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9370 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 33523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 237.08ms SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 33137 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 165925.89ms IncrementalHoareTripleChecker+Time [2021-11-02 21:07:34,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9370 Valid, 755 Invalid, 33523 Unknown, 0 Unchecked, 237.08ms Time], IncrementalHoareTripleChecker [374 Valid, 33137 Invalid, 12 Unknown, 0 Unchecked, 165925.89ms Time] [2021-11-02 21:07:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137296 states. [2021-11-02 21:07:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137296 to 132991. [2021-11-02 21:07:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132991 states, 128330 states have (on average 1.5330709888568534) internal successors, (196739), 129241 states have internal predecessors, (196739), 3204 states have call successors, (3204), 1200 states have call predecessors, (3204), 1447 states have return successors, (5953), 3264 states have call predecessors, (5953), 3204 states have call successors, (5953) [2021-11-02 21:07:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132991 states to 132991 states and 205896 transitions. [2021-11-02 21:07:39,407 INFO L78 Accepts]: Start accepts. Automaton has 132991 states and 205896 transitions. Word has length 263 [2021-11-02 21:07:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:07:39,407 INFO L470 AbstractCegarLoop]: Abstraction has 132991 states and 205896 transitions. [2021-11-02 21:07:39,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 5 states have internal predecessors, (256), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 21:07:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 132991 states and 205896 transitions. [2021-11-02 21:07:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-02 21:07:39,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:07:39,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:07:39,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 21:07:39,417 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION === [clean_up_interface_dataErr0ASSERT_VIOLATIONERROR_FUNCTION, clean_up_interface_dataErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 21:07:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:07:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1520010611, now seen corresponding path program 1 times [2021-11-02 21:07:39,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:07:39,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251777409] [2021-11-02 21:07:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:07:39,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:07:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:07:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-02 21:07:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:07:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-02 21:07:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:07:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:07:40,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:07:40,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251777409] [2021-11-02 21:07:40,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251777409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:07:40,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:07:40,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:07:40,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139176810] [2021-11-02 21:07:40,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:07:40,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:07:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:07:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:07:40,143 INFO L87 Difference]: Start difference. First operand 132991 states and 205896 transitions. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 5 states have internal predecessors, (257), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 21:07:42,235 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 [] Killed by 15