./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--mmc--host--sdhci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--mmc--host--sdhci.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 661b1c45ff8384adf65e7d483f84ec114d123dfa11d8bd8ea550046ca3938a1c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 06:54:37,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 06:54:37,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 06:54:37,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 06:54:37,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 06:54:37,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 06:54:37,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 06:54:37,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 06:54:37,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 06:54:37,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 06:54:37,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 06:54:37,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 06:54:37,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 06:54:37,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 06:54:37,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 06:54:37,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 06:54:37,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 06:54:37,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 06:54:37,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 06:54:37,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 06:54:37,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 06:54:37,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 06:54:37,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 06:54:37,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 06:54:37,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 06:54:37,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 06:54:37,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 06:54:37,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 06:54:37,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 06:54:37,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 06:54:37,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 06:54:37,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 06:54:37,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 06:54:37,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 06:54:37,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 06:54:37,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 06:54:37,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 06:54:37,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 06:54:37,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 06:54:37,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 06:54:37,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 06:54:37,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 06:54:37,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 06:54:37,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 06:54:37,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 06:54:37,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 06:54:37,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 06:54:37,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 06:54:37,412 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 06:54:37,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 06:54:37,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 06:54:37,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 06:54:37,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 06:54:37,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 06:54:37,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 06:54:37,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 06:54:37,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 06:54:37,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 06:54:37,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 06:54:37,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 06:54:37,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 06:54:37,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:54:37,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 06:54:37,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 06:54:37,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 06:54:37,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 06:54:37,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 06:54:37,416 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 06:54:37,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 06:54:37,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 06:54:37,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 06:54:37,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 661b1c45ff8384adf65e7d483f84ec114d123dfa11d8bd8ea550046ca3938a1c [2021-11-04 06:54:37,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 06:54:37,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 06:54:37,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 06:54:37,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 06:54:37,655 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 06:54:37,656 INFO L432 ainManager$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--mmc--host--sdhci.ko-entry_point.cil.out.i [2021-11-04 06:54:37,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d81e6331/04bbbdeda139440895e6d459d8644031/FLAG993fe1523 [2021-11-04 06:54:38,446 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 06:54:38,447 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--mmc--host--sdhci.ko-entry_point.cil.out.i [2021-11-04 06:54:38,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d81e6331/04bbbdeda139440895e6d459d8644031/FLAG993fe1523 [2021-11-04 06:54:38,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d81e6331/04bbbdeda139440895e6d459d8644031 [2021-11-04 06:54:38,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 06:54:38,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 06:54:38,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 06:54:38,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 06:54:38,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 06:54:38,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:54:38" (1/1) ... [2021-11-04 06:54:38,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfac56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:38, skipping insertion in model container [2021-11-04 06:54:38,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:54:38" (1/1) ... [2021-11-04 06:54:38,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 06:54:38,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 06:54:40,705 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--mmc--host--sdhci.ko-entry_point.cil.out.i[318263,318276] [2021-11-04 06:54:40,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:54:40,847 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 06:54:41,265 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--mmc--host--sdhci.ko-entry_point.cil.out.i[318263,318276] [2021-11-04 06:54:41,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:54:41,399 INFO L208 MainTranslator]: Completed translation [2021-11-04 06:54:41,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41 WrapperNode [2021-11-04 06:54:41,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 06:54:41,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 06:54:41,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 06:54:41,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 06:54:41,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:41,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:47,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 06:54:47,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 06:54:47,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 06:54:47,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 06:54:47,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:47,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:49,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:49,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:51,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:52,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:52,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:53,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 06:54:53,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 06:54:53,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 06:54:53,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 06:54:53,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (1/1) ... [2021-11-04 06:54:53,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:54:53,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:54:53,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 06:54:53,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 06:54:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-04 06:54:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 06:54:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 06:54:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_execute_tuning [2021-11-04 06:54:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_execute_tuning [2021-11-04 06:54:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_hw_reset [2021-11-04 06:54:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_hw_reset [2021-11-04 06:54:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-11-04 06:54:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-11-04 06:54:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_remove_host [2021-11-04 06:54:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_remove_host [2021-11-04 06:54:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-04 06:54:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-04 06:54:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_check_ro [2021-11-04 06:54:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_check_ro [2021-11-04 06:54:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 06:54:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 06:54:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_prepare_data [2021-11-04 06:54:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_prepare_data [2021-11-04 06:54:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_request [2021-11-04 06:54:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_request [2021-11-04 06:54:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 06:54:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 06:54:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_reinit [2021-11-04 06:54:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_reinit [2021-11-04 06:54:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_set_timeout [2021-11-04 06:54:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_set_timeout [2021-11-04 06:54:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 06:54:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 06:54:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 06:54:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_resume_host [2021-11-04 06:54:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_resume_host [2021-11-04 06:54:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 06:54:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_do_set_ios [2021-11-04 06:54:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_do_set_ios [2021-11-04 06:54:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_card_event [2021-11-04 06:54:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_card_event [2021-11-04 06:54:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_do_start_signal_voltage_switch [2021-11-04 06:54:53,738 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_do_start_signal_voltage_switch [2021-11-04 06:54:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 06:54:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 06:54:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 06:54:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 06:54:53,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 06:54:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-04 06:54:53,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-04 06:54:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_do_get_ro [2021-11-04 06:54:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_do_get_ro [2021-11-04 06:54:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_send_command [2021-11-04 06:54:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_send_command [2021-11-04 06:54:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_get_ro [2021-11-04 06:54:53,743 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_get_ro [2021-11-04 06:54:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_set_ios [2021-11-04 06:54:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_set_ios [2021-11-04 06:54:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_runtime_resume_host [2021-11-04 06:54:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_runtime_resume_host [2021-11-04 06:54:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_init [2021-11-04 06:54:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_init [2021-11-04 06:54:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_add_host [2021-11-04 06:54:53,744 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_add_host [2021-11-04 06:54:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 06:54:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 06:54:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-04 06:54:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure sdhci_do_reset [2021-11-04 06:54:53,745 INFO L138 BoogieDeclarations]: Found implementation of procedure sdhci_do_reset [2021-11-04 06:54:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 06:54:53,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 06:55:16,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 06:55:16,498 INFO L299 CfgBuilder]: Removed 37055 assume(true) statements. [2021-11-04 06:55:16,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:55:16 BoogieIcfgContainer [2021-11-04 06:55:16,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 06:55:16,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 06:55:16,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 06:55:16,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 06:55:16,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 06:54:38" (1/3) ... [2021-11-04 06:55:16,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256ce649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:55:16, skipping insertion in model container [2021-11-04 06:55:16,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:54:41" (2/3) ... [2021-11-04 06:55:16,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256ce649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:55:16, skipping insertion in model container [2021-11-04 06:55:16,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:55:16" (3/3) ... [2021-11-04 06:55:16,534 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--mmc--host--sdhci.ko-entry_point.cil.out.i [2021-11-04 06:55:16,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 06:55:16,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-04 06:55:16,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 06:55:16,672 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 06:55:16,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-04 06:55:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 35632 states, 35286 states have (on average 1.3648755880519186) internal successors, (48161), 35367 states have internal predecessors, (48161), 317 states have call successors, (317), 25 states have call predecessors, (317), 25 states have return successors, (317), 313 states have call predecessors, (317), 317 states have call successors, (317) [2021-11-04 06:55:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 06:55:17,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:55:17,111 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] [2021-11-04 06:55:17,111 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 06:55:17,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:55:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1252814206, now seen corresponding path program 1 times [2021-11-04 06:55:17,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:55:17,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842269835] [2021-11-04 06:55:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:55:17,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:55:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:55:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:55:18,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:55:18,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842269835] [2021-11-04 06:55:18,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842269835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:55:18,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:55:18,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:55:18,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039991802] [2021-11-04 06:55:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:55:18,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 06:55:18,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:55:18,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 06:55:18,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:55:18,187 INFO L87 Difference]: Start difference. First operand has 35632 states, 35286 states have (on average 1.3648755880519186) internal successors, (48161), 35367 states have internal predecessors, (48161), 317 states have call successors, (317), 25 states have call predecessors, (317), 25 states have return successors, (317), 313 states have call predecessors, (317), 317 states have call successors, (317) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:55:20,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:55:43,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:58:39,686 INFO L93 Difference]: Finished difference Result 71245 states and 97882 transitions. [2021-11-04 06:58:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 06:58:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2021-11-04 06:58:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:58:39,877 INFO L225 Difference]: With dead ends: 71245 [2021-11-04 06:58:39,878 INFO L226 Difference]: Without dead ends: 34572 [2021-11-04 06:58:40,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:58:40,060 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46797 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 181178.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 46799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 184.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46797 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198157.36ms IncrementalHoareTripleChecker+Time [2021-11-04 06:58:40,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1675 Invalid, 46799 Unknown, 0 Unchecked, 184.25ms Time], IncrementalHoareTripleChecker [0 Valid, 46797 Invalid, 2 Unknown, 0 Unchecked, 198157.36ms Time] [2021-11-04 06:58:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34572 states. [2021-11-04 06:58:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34572 to 34572. [2021-11-04 06:58:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34572 states, 34227 states have (on average 1.3367809039647063) internal successors, (45754), 34307 states have internal predecessors, (45754), 317 states have call successors, (317), 25 states have call predecessors, (317), 25 states have return successors, (317), 313 states have call predecessors, (317), 317 states have call successors, (317) [2021-11-04 06:58:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34572 states to 34572 states and 46388 transitions. [2021-11-04 06:58:41,056 INFO L78 Accepts]: Start accepts. Automaton has 34572 states and 46388 transitions. Word has length 44 [2021-11-04 06:58:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:58:41,057 INFO L470 AbstractCegarLoop]: Abstraction has 34572 states and 46388 transitions. [2021-11-04 06:58:41,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:58:41,057 INFO L276 IsEmpty]: Start isEmpty. Operand 34572 states and 46388 transitions. [2021-11-04 06:58:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 06:58:41,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:58:41,069 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] [2021-11-04 06:58:41,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 06:58:41,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 06:58:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:58:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash -593282684, now seen corresponding path program 1 times [2021-11-04 06:58:41,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:58:41,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58762762] [2021-11-04 06:58:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:58:41,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:58:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:58:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:58:41,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:58:41,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58762762] [2021-11-04 06:58:41,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58762762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:58:41,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:58:41,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:58:41,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551664442] [2021-11-04 06:58:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:58:41,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:58:41,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:58:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:58:41,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:58:41,663 INFO L87 Difference]: Start difference. First operand 34572 states and 46388 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:58:43,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:58:46,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:59:48,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:02:48,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15