./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.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 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 17:33:08,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 17:33:08,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 17:33:08,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 17:33:08,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 17:33:08,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 17:33:08,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 17:33:08,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 17:33:08,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 17:33:08,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 17:33:08,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 17:33:08,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 17:33:08,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 17:33:08,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 17:33:08,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 17:33:08,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 17:33:08,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 17:33:08,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 17:33:08,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 17:33:08,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 17:33:08,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 17:33:08,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 17:33:08,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 17:33:08,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 17:33:08,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 17:33:08,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 17:33:08,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 17:33:08,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 17:33:08,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 17:33:08,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 17:33:08,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 17:33:08,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 17:33:08,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 17:33:08,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 17:33:08,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 17:33:08,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 17:33:08,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 17:33:08,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 17:33:08,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 17:33:08,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 17:33:08,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 17:33:08,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 17:33:08,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 17:33:08,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 17:33:08,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 17:33:08,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 17:33:08,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 17:33:08,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 17:33:08,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 17:33:08,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 17:33:08,737 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 17:33:08,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 17:33:08,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 17:33:08,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 17:33:08,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 17:33:08,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 17:33:08,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 17:33:08,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 17:33:08,738 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 17:33:08,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 17:33:08,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 17:33:08,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 17:33:08,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 17:33:08,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:33:08,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 17:33:08,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 17:33:08,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 17:33:08,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 17:33:08,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 17:33:08,740 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 17:33:08,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 17:33:08,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 17:33:08,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 17:33:08,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 [2021-12-21 17:33:08,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 17:33:08,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 17:33:08,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 17:33:08,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 17:33:08,966 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 17:33:08,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-21 17:33:09,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/345b23b82/fda2d0ca9c2b4d89b8cffda922fa62b2/FLAGc6a51e3f5 [2021-12-21 17:33:09,642 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 17:33:09,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-21 17:33:09,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/345b23b82/fda2d0ca9c2b4d89b8cffda922fa62b2/FLAGc6a51e3f5 [2021-12-21 17:33:09,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/345b23b82/fda2d0ca9c2b4d89b8cffda922fa62b2 [2021-12-21 17:33:09,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 17:33:09,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 17:33:09,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 17:33:09,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 17:33:09,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 17:33:09,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:33:09" (1/1) ... [2021-12-21 17:33:09,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15673e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:09, skipping insertion in model container [2021-12-21 17:33:09,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:33:09" (1/1) ... [2021-12-21 17:33:09,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 17:33:09,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 17:33:11,341 WARN L230 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-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2021-12-21 17:33:11,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:33:11,459 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 17:33:11,820 WARN L230 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-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2021-12-21 17:33:11,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:33:11,938 INFO L208 MainTranslator]: Completed translation [2021-12-21 17:33:11,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11 WrapperNode [2021-12-21 17:33:11,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 17:33:11,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 17:33:11,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 17:33:11,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 17:33:11,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,411 INFO L137 Inliner]: procedures = 170, calls = 6771, calls flagged for inlining = 68, calls inlined = 55, statements flattened = 16522 [2021-12-21 17:33:12,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 17:33:12,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 17:33:12,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 17:33:12,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 17:33:12,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 17:33:12,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 17:33:12,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 17:33:12,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 17:33:12,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (1/1) ... [2021-12-21 17:33:12,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:33:12,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:33:12,888 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) [2021-12-21 17:33:12,896 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 [2021-12-21 17:33:12,918 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2021-12-21 17:33:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2021-12-21 17:33:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2021-12-21 17:33:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2021-12-21 17:33:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 17:33:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-21 17:33:12,919 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-21 17:33:12,919 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2021-12-21 17:33:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2021-12-21 17:33:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2021-12-21 17:33:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2021-12-21 17:33:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 17:33:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 17:33:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2021-12-21 17:33:12,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2021-12-21 17:33:12,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 17:33:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2021-12-21 17:33:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2021-12-21 17:33:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2021-12-21 17:33:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2021-12-21 17:33:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2021-12-21 17:33:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2021-12-21 17:33:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2021-12-21 17:33:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2021-12-21 17:33:12,922 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 17:33:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 17:33:12,922 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2021-12-21 17:33:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2021-12-21 17:33:12,922 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2021-12-21 17:33:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2021-12-21 17:33:12,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 17:33:12,922 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 17:33:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 17:33:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2021-12-21 17:33:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2021-12-21 17:33:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 17:33:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 17:33:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2021-12-21 17:33:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2021-12-21 17:33:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2021-12-21 17:33:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2021-12-21 17:33:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2021-12-21 17:33:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2021-12-21 17:33:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-21 17:33:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-21 17:33:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 17:33:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 17:33:12,925 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-21 17:33:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-21 17:33:12,925 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2021-12-21 17:33:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2021-12-21 17:33:12,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2021-12-21 17:33:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2021-12-21 17:33:12,926 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-21 17:33:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-21 17:33:12,926 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-21 17:33:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-21 17:33:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2021-12-21 17:33:12,927 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2021-12-21 17:33:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 17:33:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 17:33:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 17:33:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2021-12-21 17:33:12,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2021-12-21 17:33:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2021-12-21 17:33:12,929 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2021-12-21 17:33:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2021-12-21 17:33:12,929 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2021-12-21 17:33:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2021-12-21 17:33:12,929 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2021-12-21 17:33:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-21 17:33:12,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-21 17:33:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 17:33:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2021-12-21 17:33:12,930 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2021-12-21 17:33:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2021-12-21 17:33:12,930 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2021-12-21 17:33:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2021-12-21 17:33:12,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2021-12-21 17:33:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2021-12-21 17:33:12,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2021-12-21 17:33:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2021-12-21 17:33:12,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2021-12-21 17:33:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 17:33:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 17:33:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2021-12-21 17:33:12,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2021-12-21 17:33:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2021-12-21 17:33:12,932 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2021-12-21 17:33:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2021-12-21 17:33:12,932 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2021-12-21 17:33:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2021-12-21 17:33:12,932 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2021-12-21 17:33:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 17:33:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 17:33:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2021-12-21 17:33:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2021-12-21 17:33:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2021-12-21 17:33:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2021-12-21 17:33:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 17:33:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-21 17:33:12,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-21 17:33:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2021-12-21 17:33:12,935 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2021-12-21 17:33:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 17:33:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2021-12-21 17:33:12,935 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2021-12-21 17:33:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 17:33:12,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 17:33:12,935 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2021-12-21 17:33:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2021-12-21 17:33:13,949 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 17:33:13,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 17:33:23,948 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 17:33:23,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 17:33:23,986 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 17:33:23,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:33:23 BoogieIcfgContainer [2021-12-21 17:33:23,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 17:33:23,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 17:33:23,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 17:33:23,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 17:33:24,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:33:09" (1/3) ... [2021-12-21 17:33:24,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6730127a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:33:24, skipping insertion in model container [2021-12-21 17:33:24,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:33:11" (2/3) ... [2021-12-21 17:33:24,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6730127a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:33:24, skipping insertion in model container [2021-12-21 17:33:24,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:33:23" (3/3) ... [2021-12-21 17:33:24,004 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-21 17:33:24,009 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 17:33:24,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 17:33:24,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 17:33:24,075 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 [2021-12-21 17:33:24,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 17:33:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 5322 states, 3979 states have (on average 1.5275194772555918) internal successors, (6078), 3991 states have internal predecessors, (6078), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) [2021-12-21 17:33:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 17:33:24,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:33:24,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:33:24,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 17:33:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:33:24,162 INFO L85 PathProgramCache]: Analyzing trace with hash 715822238, now seen corresponding path program 1 times [2021-12-21 17:33:24,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:33:24,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854024676] [2021-12-21 17:33:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:33:24,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:33:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:33:24,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:33:24,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854024676] [2021-12-21 17:33:24,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854024676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:33:24,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:33:24,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:33:24,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137530804] [2021-12-21 17:33:24,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:33:24,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:33:24,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:33:24,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:33:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:33:24,755 INFO L87 Difference]: Start difference. First operand has 5322 states, 3979 states have (on average 1.5275194772555918) internal successors, (6078), 3991 states have internal predecessors, (6078), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:33:25,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:33:25,315 INFO L93 Difference]: Finished difference Result 10704 states and 17477 transitions. [2021-12-21 17:33:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:33:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 17:33:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:33:25,383 INFO L225 Difference]: With dead ends: 10704 [2021-12-21 17:33:25,383 INFO L226 Difference]: Without dead ends: 5381 [2021-12-21 17:33:25,443 INFO L932 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 [2021-12-21 17:33:25,447 INFO L933 BasicCegarLoop]: 8652 mSDtfsCounter, 8384 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8384 SdHoareTripleChecker+Valid, 9009 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:33:25,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8384 Valid, 9009 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:33:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5381 states. [2021-12-21 17:33:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5381 to 5379. [2021-12-21 17:33:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 4031 states have (on average 1.528404862317043) internal successors, (6161), 4039 states have internal predecessors, (6161), 1295 states have call successors, (1295), 53 states have call predecessors, (1295), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-12-21 17:33:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8745 transitions. [2021-12-21 17:33:26,424 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8745 transitions. Word has length 8 [2021-12-21 17:33:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:33:26,424 INFO L470 AbstractCegarLoop]: Abstraction has 5379 states and 8745 transitions. [2021-12-21 17:33:26,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:33:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8745 transitions. [2021-12-21 17:33:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 17:33:26,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:33:26,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:33:26,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 17:33:26,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 17:33:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:33:26,428 INFO L85 PathProgramCache]: Analyzing trace with hash 713153290, now seen corresponding path program 1 times [2021-12-21 17:33:26,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:33:26,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861044485] [2021-12-21 17:33:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:33:26,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:33:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:33:26,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:33:26,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861044485] [2021-12-21 17:33:26,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861044485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:33:26,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:33:26,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:33:26,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423620248] [2021-12-21 17:33:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:33:26,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:33:26,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:33:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:33:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:33:26,718 INFO L87 Difference]: Start difference. First operand 5379 states and 8745 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:33:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:33:26,978 INFO L93 Difference]: Finished difference Result 5381 states and 8746 transitions. [2021-12-21 17:33:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:33:26,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 17:33:26,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:33:27,016 INFO L225 Difference]: With dead ends: 5381 [2021-12-21 17:33:27,016 INFO L226 Difference]: Without dead ends: 5378 [2021-12-21 17:33:27,027 INFO L932 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 [2021-12-21 17:33:27,029 INFO L933 BasicCegarLoop]: 8643 mSDtfsCounter, 8638 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8638 SdHoareTripleChecker+Valid, 8643 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:33:27,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8638 Valid, 8643 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:33:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2021-12-21 17:33:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5378. [2021-12-21 17:33:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 4031 states have (on average 1.528156784916894) internal successors, (6160), 4038 states have internal predecessors, (6160), 1294 states have call successors, (1294), 53 states have call predecessors, (1294), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-12-21 17:33:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8743 transitions. [2021-12-21 17:33:27,811 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8743 transitions. Word has length 9 [2021-12-21 17:33:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:33:27,811 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 8743 transitions. [2021-12-21 17:33:27,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:33:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8743 transitions. [2021-12-21 17:33:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 17:33:27,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:33:27,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:33:27,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 17:33:27,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 17:33:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:33:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash 630420769, now seen corresponding path program 1 times [2021-12-21 17:33:27,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:33:27,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838865881] [2021-12-21 17:33:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:33:27,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:33:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:33:28,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:33:28,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838865881] [2021-12-21 17:33:28,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838865881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:33:28,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:33:28,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:33:28,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360117739] [2021-12-21 17:33:28,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:33:28,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:33:28,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:33:28,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:33:28,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:33:28,077 INFO L87 Difference]: Start difference. First operand 5378 states and 8743 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:33:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:33:28,296 INFO L93 Difference]: Finished difference Result 5380 states and 8744 transitions. [2021-12-21 17:33:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:33:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-21 17:33:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:33:28,332 INFO L225 Difference]: With dead ends: 5380 [2021-12-21 17:33:28,333 INFO L226 Difference]: Without dead ends: 5377 [2021-12-21 17:33:28,340 INFO L932 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 [2021-12-21 17:33:28,341 INFO L933 BasicCegarLoop]: 8641 mSDtfsCounter, 8635 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8635 SdHoareTripleChecker+Valid, 8641 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:33:28,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8635 Valid, 8641 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:33:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2021-12-21 17:33:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 5377. [2021-12-21 17:33:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5377 states, 4031 states have (on average 1.5279087075167452) internal successors, (6159), 4037 states have internal predecessors, (6159), 1293 states have call successors, (1293), 53 states have call predecessors, (1293), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-12-21 17:33:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5377 states to 5377 states and 8741 transitions. [2021-12-21 17:33:28,990 INFO L78 Accepts]: Start accepts. Automaton has 5377 states and 8741 transitions. Word has length 10 [2021-12-21 17:33:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:33:28,990 INFO L470 AbstractCegarLoop]: Abstraction has 5377 states and 8741 transitions. [2021-12-21 17:33:28,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:33:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5377 states and 8741 transitions. [2021-12-21 17:33:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 17:33:28,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:33:28,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:33:28,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 17:33:28,991 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 17:33:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:33:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1934282515, now seen corresponding path program 1 times [2021-12-21 17:33:28,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:33:28,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673130702] [2021-12-21 17:33:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:33:28,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:33:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 17:33:29,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:33:29,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673130702] [2021-12-21 17:33:29,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673130702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:33:29,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:33:29,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 17:33:29,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616629005] [2021-12-21 17:33:29,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:33:29,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 17:33:29,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:33:29,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 17:33:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 17:33:29,244 INFO L87 Difference]: Start difference. First operand 5377 states and 8741 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:33:29,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:33:29,732 INFO L93 Difference]: Finished difference Result 16109 states and 26329 transitions. [2021-12-21 17:33:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 17:33:29,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-21 17:33:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:33:29,830 INFO L225 Difference]: With dead ends: 16109 [2021-12-21 17:33:29,830 INFO L226 Difference]: Without dead ends: 10731 [2021-12-21 17:33:29,885 INFO L932 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 [2021-12-21 17:33:29,890 INFO L933 BasicCegarLoop]: 10040 mSDtfsCounter, 8663 mSDsluCounter, 8663 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8663 SdHoareTripleChecker+Valid, 18703 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 17:33:29,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8663 Valid, 18703 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 17:33:29,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10731 states. [2021-12-21 17:33:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10731 to 10727. [2021-12-21 17:33:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10727 states, 8045 states have (on average 1.5286513362336855) internal successors, (12298), 8055 states have internal predecessors, (12298), 2579 states have call successors, (2579), 104 states have call predecessors, (2579), 102 states have return successors, (2653), 2571 states have call predecessors, (2653), 2573 states have call successors, (2653) [2021-12-21 17:33:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10727 states to 10727 states and 17530 transitions. [2021-12-21 17:33:31,071 INFO L78 Accepts]: Start accepts. Automaton has 10727 states and 17530 transitions. Word has length 11 [2021-12-21 17:33:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:33:31,071 INFO L470 AbstractCegarLoop]: Abstraction has 10727 states and 17530 transitions. [2021-12-21 17:33:31,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 17:33:31,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10727 states and 17530 transitions. [2021-12-21 17:33:31,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 17:33:31,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:33:31,083 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:33:31,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 17:33:31,083 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 17:33:31,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:33:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash -724196731, now seen corresponding path program 1 times [2021-12-21 17:33:31,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:33:31,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799139571] [2021-12-21 17:33:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:33:31,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:33:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:33:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 17:33:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:33:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:31,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 17:33:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 17:33:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:31,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:33:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 17:33:31,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:33:31,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799139571] [2021-12-21 17:33:31,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799139571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:33:31,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:33:31,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 17:33:31,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705103353] [2021-12-21 17:33:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:33:31,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 17:33:31,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:33:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 17:33:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 17:33:31,673 INFO L87 Difference]: Start difference. First operand 10727 states and 17530 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 17:33:39,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-21 17:33:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:33:39,831 INFO L93 Difference]: Finished difference Result 21759 states and 35777 transitions. [2021-12-21 17:33:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 17:33:39,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2021-12-21 17:33:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:33:39,908 INFO L225 Difference]: With dead ends: 21759 [2021-12-21 17:33:39,908 INFO L226 Difference]: Without dead ends: 11035 [2021-12-21 17:33:39,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 17:33:40,001 INFO L933 BasicCegarLoop]: 8504 mSDtfsCounter, 660 mSDsluCounter, 30481 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 1369 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 38985 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1369 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-21 17:33:40,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 38985 Invalid, 3989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1369 Valid, 2619 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-12-21 17:33:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11035 states. [2021-12-21 17:33:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11035 to 10875. [2021-12-21 17:33:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10875 states, 8166 states have (on average 1.5274308106784227) internal successors, (12473), 8179 states have internal predecessors, (12473), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 109 states have return successors, (2702), 2593 states have call predecessors, (2702), 2593 states have call successors, (2702) [2021-12-21 17:33:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10875 states to 10875 states and 17774 transitions. [2021-12-21 17:33:41,300 INFO L78 Accepts]: Start accepts. Automaton has 10875 states and 17774 transitions. Word has length 69 [2021-12-21 17:33:41,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:33:41,300 INFO L470 AbstractCegarLoop]: Abstraction has 10875 states and 17774 transitions. [2021-12-21 17:33:41,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 17:33:41,301 INFO L276 IsEmpty]: Start isEmpty. Operand 10875 states and 17774 transitions. [2021-12-21 17:33:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-21 17:33:41,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:33:41,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:33:41,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 17:33:41,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 17:33:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:33:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash 412085355, now seen corresponding path program 1 times [2021-12-21 17:33:41,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:33:41,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018675124] [2021-12-21 17:33:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:33:41,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:33:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:42,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 17:33:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 17:33:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:42,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:33:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:33:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 17:33:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:42,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 17:33:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 17:33:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:33:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 17:33:42,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:33:42,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018675124] [2021-12-21 17:33:42,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018675124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:33:42,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:33:42,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 17:33:42,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132495423] [2021-12-21 17:33:42,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:33:42,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 17:33:42,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:33:42,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 17:33:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-21 17:33:42,405 INFO L87 Difference]: Start difference. First operand 10875 states and 17774 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-21 17:33:59,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []