./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.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 955ba2d33e196282c8a8d7d6878108af44ab130aa14cf65292e3d1ed9a6c4e47 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:37:08,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:37:08,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:37:08,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:37:08,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:37:08,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:37:08,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:37:08,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:37:08,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:37:08,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:37:08,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:37:08,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:37:08,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:37:08,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:37:08,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:37:08,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:37:08,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:37:08,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:37:08,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:37:08,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:37:08,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:37:08,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:37:08,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:37:08,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:37:08,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:37:08,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:37:08,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:37:08,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:37:08,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:37:08,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:37:08,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:37:08,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:37:08,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:37:08,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:37:08,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:37:08,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:37:08,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:37:08,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:37:08,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:37:08,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:37:08,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:37:08,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:37:08,761 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:37:08,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:37:08,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:37:08,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:37:08,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:37:08,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:37:08,766 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:37:08,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:37:08,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:37:08,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:37:08,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:37:08,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:37:08,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:37:08,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:37:08,768 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:37:08,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:37:08,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:37:08,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:37:08,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:37:08,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:37:08,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:37:08,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:37:08,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:37:08,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:37:08,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:37:08,770 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:37:08,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:37:08,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:37:08,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:37:08,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 955ba2d33e196282c8a8d7d6878108af44ab130aa14cf65292e3d1ed9a6c4e47 [2021-11-06 14:37:09,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:37:09,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:37:09,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:37:09,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:37:09,079 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:37:09,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i [2021-11-06 14:37:09,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4aa2c620/82ae1754cc574617bba98a135356ba19/FLAG976fdc595 [2021-11-06 14:37:10,021 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:37:10,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i [2021-11-06 14:37:10,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4aa2c620/82ae1754cc574617bba98a135356ba19/FLAG976fdc595 [2021-11-06 14:37:10,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4aa2c620/82ae1754cc574617bba98a135356ba19 [2021-11-06 14:37:10,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:37:10,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:37:10,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:37:10,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:37:10,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:37:10,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:37:10" (1/1) ... [2021-11-06 14:37:10,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cca3e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:10, skipping insertion in model container [2021-11-06 14:37:10,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:37:10" (1/1) ... [2021-11-06 14:37:10,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:37:10,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:37:12,158 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i[210062,210075] [2021-11-06 14:37:14,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:37:14,793 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:37:14,944 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i[210062,210075] [2021-11-06 14:37:15,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:37:15,754 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:37:15,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15 WrapperNode [2021-11-06 14:37:15,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:37:15,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:37:15,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:37:15,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:37:15,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:15,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:19,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:37:19,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:37:19,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:37:19,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:37:19,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:19,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:20,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:20,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:22,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:22,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:22,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:23,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:37:23,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:37:23,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:37:23,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:37:23,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (1/1) ... [2021-11-06 14:37:23,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:37:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:37:23,532 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) [2021-11-06 14:37:23,538 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 [2021-11-06 14:37:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:37:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:37:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:37:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:37:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:37:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:37:23,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:37:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 14:39:03,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:39:03,817 INFO L299 CfgBuilder]: Removed 27112 assume(true) statements. [2021-11-06 14:39:03,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:39:03 BoogieIcfgContainer [2021-11-06 14:39:03,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:39:03,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:39:03,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:39:03,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:39:03,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:37:10" (1/3) ... [2021-11-06 14:39:03,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2772c5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:39:03, skipping insertion in model container [2021-11-06 14:39:03,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:37:15" (2/3) ... [2021-11-06 14:39:03,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2772c5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:39:03, skipping insertion in model container [2021-11-06 14:39:03,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:39:03" (3/3) ... [2021-11-06 14:39:03,848 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--marvell--sky2.ko-entry_point.cil.out.i [2021-11-06 14:39:03,853 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:39:03,853 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 14:39:03,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:39:03,955 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 [2021-11-06 14:39:03,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 14:39:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 19176 states, 19174 states have (on average 1.2581620945029728) internal successors, (24124), 19175 states have internal predecessors, (24124), 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) [2021-11-06 14:39:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 14:39:04,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:39:04,176 INFO L513 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] [2021-11-06 14:39:04,177 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:39:04,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:39:04,182 INFO L85 PathProgramCache]: Analyzing trace with hash 328594732, now seen corresponding path program 1 times [2021-11-06 14:39:04,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:39:04,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5613003] [2021-11-06 14:39:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:39:04,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:39:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:39:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:39:05,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:39:05,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5613003] [2021-11-06 14:39:05,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5613003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:39:05,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:39:05,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:39:05,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329522922] [2021-11-06 14:39:05,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:39:05,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:39:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:39:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:39:05,394 INFO L87 Difference]: Start difference. First operand has 19176 states, 19174 states have (on average 1.2581620945029728) internal successors, (24124), 19175 states have internal predecessors, (24124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-06 14:39:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:39:09,022 INFO L93 Difference]: Finished difference Result 57253 states and 72010 transitions. [2021-11-06 14:39:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:39:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-06 14:39:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:39:09,216 INFO L225 Difference]: With dead ends: 57253 [2021-11-06 14:39:09,216 INFO L226 Difference]: Without dead ends: 37932 [2021-11-06 14:39:09,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:39:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37932 states. [2021-11-06 14:39:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37932 to 37932. [2021-11-06 14:39:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37932 states, 37931 states have (on average 1.251298410271282) internal successors, (47463), 37931 states have internal predecessors, (47463), 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) [2021-11-06 14:39:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37932 states to 37932 states and 47463 transitions. [2021-11-06 14:39:10,538 INFO L78 Accepts]: Start accepts. Automaton has 37932 states and 47463 transitions. Word has length 51 [2021-11-06 14:39:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:39:10,539 INFO L470 AbstractCegarLoop]: Abstraction has 37932 states and 47463 transitions. [2021-11-06 14:39:10,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-06 14:39:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 37932 states and 47463 transitions. [2021-11-06 14:39:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 14:39:10,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:39:10,545 INFO L513 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] [2021-11-06 14:39:10,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:39:10,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:39:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:39:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1681837501, now seen corresponding path program 1 times [2021-11-06 14:39:10,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:39:10,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945826739] [2021-11-06 14:39:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:39:10,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:39:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:39:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:39:11,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:39:11,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945826739] [2021-11-06 14:39:11,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945826739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:39:11,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:39:11,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:39:11,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771634747] [2021-11-06 14:39:11,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:39:11,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:39:11,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:39:11,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:39:11,300 INFO L87 Difference]: Start difference. First operand 37932 states and 47463 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2021-11-06 14:39:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:39:13,283 INFO L93 Difference]: Finished difference Result 75741 states and 94789 transitions. [2021-11-06 14:39:13,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:39:13,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2021-11-06 14:39:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:39:13,518 INFO L225 Difference]: With dead ends: 75741 [2021-11-06 14:39:13,519 INFO L226 Difference]: Without dead ends: 75731 [2021-11-06 14:39:13,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:39:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75731 states. [2021-11-06 14:39:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75731 to 75699. [2021-11-06 14:39:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75699 states, 75698 states have (on average 1.2515125895003831) internal successors, (94737), 75698 states have internal predecessors, (94737), 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) [2021-11-06 14:39:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75699 states to 75699 states and 94737 transitions. [2021-11-06 14:39:15,789 INFO L78 Accepts]: Start accepts. Automaton has 75699 states and 94737 transitions. Word has length 57 [2021-11-06 14:39:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:39:15,789 INFO L470 AbstractCegarLoop]: Abstraction has 75699 states and 94737 transitions. [2021-11-06 14:39:15,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2021-11-06 14:39:15,790 INFO L276 IsEmpty]: Start isEmpty. Operand 75699 states and 94737 transitions. [2021-11-06 14:39:15,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-06 14:39:15,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:39:15,854 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:39:15,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:39:15,857 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:39:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:39:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1537407852, now seen corresponding path program 1 times [2021-11-06 14:39:15,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:39:15,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742697256] [2021-11-06 14:39:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:39:15,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:39:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:39:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:39:16,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:39:16,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742697256] [2021-11-06 14:39:16,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742697256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:39:16,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:39:16,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:39:16,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183361372] [2021-11-06 14:39:16,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:39:16,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:39:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:39:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:39:16,374 INFO L87 Difference]: Start difference. First operand 75699 states and 94737 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-11-06 14:39:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:39:19,093 INFO L93 Difference]: Finished difference Result 201337 states and 251825 transitions. [2021-11-06 14:39:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:39:19,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 176 [2021-11-06 14:39:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:39:19,714 INFO L225 Difference]: With dead ends: 201337 [2021-11-06 14:39:19,715 INFO L226 Difference]: Without dead ends: 125761 [2021-11-06 14:39:19,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:39:20,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125761 states. [2021-11-06 14:39:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125761 to 125673. [2021-11-06 14:39:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125673 states, 125672 states have (on average 1.2502785027691132) internal successors, (157125), 125672 states have internal predecessors, (157125), 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) [2021-11-06 14:39:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125673 states to 125673 states and 157125 transitions. [2021-11-06 14:39:23,471 INFO L78 Accepts]: Start accepts. Automaton has 125673 states and 157125 transitions. Word has length 176 [2021-11-06 14:39:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:39:23,472 INFO L470 AbstractCegarLoop]: Abstraction has 125673 states and 157125 transitions. [2021-11-06 14:39:23,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-11-06 14:39:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 125673 states and 157125 transitions. [2021-11-06 14:39:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 14:39:23,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:39:23,543 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:39:23,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:39:23,544 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:39:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:39:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash 551573949, now seen corresponding path program 1 times [2021-11-06 14:39:23,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:39:23,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232402916] [2021-11-06 14:39:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:39:23,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:39:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:39:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 14:39:24,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:39:24,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232402916] [2021-11-06 14:39:24,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232402916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:39:24,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:39:24,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:39:24,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812553874] [2021-11-06 14:39:24,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:39:24,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:39:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:39:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:39:24,015 INFO L87 Difference]: Start difference. First operand 125673 states and 157125 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-11-06 14:39:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:39:27,017 INFO L93 Difference]: Finished difference Result 251227 states and 314121 transitions. [2021-11-06 14:39:27,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:39:27,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 [2021-11-06 14:39:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:39:27,322 INFO L225 Difference]: With dead ends: 251227 [2021-11-06 14:39:27,322 INFO L226 Difference]: Without dead ends: 125677 [2021-11-06 14:39:27,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:39:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125677 states. [2021-11-06 14:39:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125677 to 125677. [2021-11-06 14:39:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125677 states, 125676 states have (on average 1.2502705369362488) internal successors, (157129), 125676 states have internal predecessors, (157129), 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) [2021-11-06 14:39:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125677 states to 125677 states and 157129 transitions. [2021-11-06 14:39:30,631 INFO L78 Accepts]: Start accepts. Automaton has 125677 states and 157129 transitions. Word has length 217 [2021-11-06 14:39:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:39:30,632 INFO L470 AbstractCegarLoop]: Abstraction has 125677 states and 157129 transitions. [2021-11-06 14:39:30,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-11-06 14:39:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 125677 states and 157129 transitions. [2021-11-06 14:39:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 14:39:30,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:39:30,687 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:39:30,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:39:30,688 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:39:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:39:30,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1315134725, now seen corresponding path program 1 times [2021-11-06 14:39:30,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:39:30,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628150244] [2021-11-06 14:39:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:39:30,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:39:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:39:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 14:39:31,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:39:31,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628150244] [2021-11-06 14:39:31,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628150244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:39:31,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:39:31,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:39:31,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323990333] [2021-11-06 14:39:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:39:31,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:39:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:39:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:39:31,101 INFO L87 Difference]: Start difference. First operand 125677 states and 157129 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2021-11-06 14:39:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:39:34,254 INFO L93 Difference]: Finished difference Result 251243 states and 314137 transitions. [2021-11-06 14:39:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:39:34,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 [2021-11-06 14:39:34,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:39:34,543 INFO L225 Difference]: With dead ends: 251243 [2021-11-06 14:39:34,543 INFO L226 Difference]: Without dead ends: 125689 [2021-11-06 14:39:34,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:39:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125689 states. [2021-11-06 14:39:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125689 to 125685. [2021-11-06 14:39:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125685 states, 125684 states have (on average 1.2502546067916362) internal successors, (157137), 125684 states have internal predecessors, (157137), 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) [2021-11-06 14:39:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125685 states to 125685 states and 157137 transitions. [2021-11-06 14:39:37,663 INFO L78 Accepts]: Start accepts. Automaton has 125685 states and 157137 transitions. Word has length 217 [2021-11-06 14:39:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:39:37,664 INFO L470 AbstractCegarLoop]: Abstraction has 125685 states and 157137 transitions. [2021-11-06 14:39:37,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2021-11-06 14:39:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 125685 states and 157137 transitions. [2021-11-06 14:39:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 14:39:37,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:39:37,723 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:39:37,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:39:37,723 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:39:37,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:39:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash 74159289, now seen corresponding path program 1 times [2021-11-06 14:39:37,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:39:37,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651163377] [2021-11-06 14:39:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:39:37,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:39:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:39:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:39:38,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:39:38,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651163377] [2021-11-06 14:39:38,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651163377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:39:38,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:39:38,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:39:38,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460252802] [2021-11-06 14:39:38,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:39:38,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:39:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:39:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:39:38,219 INFO L87 Difference]: Start difference. First operand 125685 states and 157137 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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)