./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.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 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:05:23,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:05:23,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:05:23,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:05:23,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:05:23,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:05:23,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:05:23,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:05:23,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:05:23,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:05:23,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:05:23,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:05:23,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:05:23,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:05:23,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:05:23,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:05:23,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:05:23,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:05:23,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:05:23,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:05:23,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:05:23,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:05:23,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:05:23,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:05:23,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:05:23,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:05:23,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:05:23,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:05:23,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:05:23,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:05:23,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:05:23,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:05:23,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:05:23,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:05:23,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:05:23,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:05:23,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:05:23,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:05:23,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:05:23,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:05:23,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:05:23,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:05:23,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:05:23,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:05:23,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:05:23,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:05:23,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:05:23,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:05:23,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:05:23,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:05:23,970 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:05:23,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:05:23,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:05:23,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:05:23,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:05:23,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:05:23,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:05:23,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:05:23,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:05:23,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:05:23,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:05:23,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:05:23,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:05:23,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:05:23,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:05:23,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:05:23,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:05:23,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:05:23,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:05:23,974 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:05:23,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:05:23,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:05:23,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 [2021-12-28 04:05:24,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:05:24,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:05:24,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:05:24,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:05:24,255 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:05:24,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-28 04:05:24,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fee14b4/27958c6cdfb84036a19f2f1dacafb767/FLAG74b411fe5 [2021-12-28 04:05:24,885 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:05:24,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-28 04:05:24,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fee14b4/27958c6cdfb84036a19f2f1dacafb767/FLAG74b411fe5 [2021-12-28 04:05:25,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fee14b4/27958c6cdfb84036a19f2f1dacafb767 [2021-12-28 04:05:25,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:05:25,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:05:25,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:05:25,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:05:25,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:05:25,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:05:25" (1/1) ... [2021-12-28 04:05:25,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d262c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:25, skipping insertion in model container [2021-12-28 04:05:25,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:05:25" (1/1) ... [2021-12-28 04:05:25,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:05:25,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:05:25,632 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-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-12-28 04:05:26,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:05:26,070 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:05:26,144 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-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-12-28 04:05:26,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:05:26,316 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:05:26,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26 WrapperNode [2021-12-28 04:05:26,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:05:26,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:05:26,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:05:26,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:05:26,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,471 INFO L137 Inliner]: procedures = 160, calls = 1221, calls flagged for inlining = 70, calls inlined = 70, statements flattened = 3023 [2021-12-28 04:05:26,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:05:26,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:05:26,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:05:26,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:05:26,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:05:26,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:05:26,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:05:26,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:05:26,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (1/1) ... [2021-12-28 04:05:26,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:05:26,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:05:26,696 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) [2021-12-28 04:05:26,703 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 [2021-12-28 04:05:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-12-28 04:05:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-12-28 04:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:05:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-12-28 04:05:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-12-28 04:05:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-12-28 04:05:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-12-28 04:05:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-12-28 04:05:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-12-28 04:05:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-12-28 04:05:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-12-28 04:05:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 04:05:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 04:05:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-28 04:05:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-28 04:05:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:05:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:05:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-12-28 04:05:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-12-28 04:05:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-12-28 04:05:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-12-28 04:05:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-12-28 04:05:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-12-28 04:05:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:05:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:05:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-28 04:05:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-28 04:05:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-12-28 04:05:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-12-28 04:05:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:05:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:05:26,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:05:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 04:05:26,742 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 04:05:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:05:26,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:05:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-28 04:05:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-28 04:05:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-12-28 04:05:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-12-28 04:05:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:05:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:05:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-12-28 04:05:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-12-28 04:05:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-12-28 04:05:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-12-28 04:05:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-12-28 04:05:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-12-28 04:05:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:05:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:05:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:05:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-12-28 04:05:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-12-28 04:05:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-12-28 04:05:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-12-28 04:05:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-12-28 04:05:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-12-28 04:05:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-12-28 04:05:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-12-28 04:05:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:05:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 04:05:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 04:05:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:05:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-12-28 04:05:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-12-28 04:05:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:05:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-28 04:05:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-28 04:05:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-28 04:05:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-28 04:05:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-12-28 04:05:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-12-28 04:05:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-12-28 04:05:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-12-28 04:05:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-12-28 04:05:26,748 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-12-28 04:05:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-12-28 04:05:26,748 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-12-28 04:05:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:05:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-28 04:05:26,748 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-28 04:05:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:05:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:05:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-12-28 04:05:26,749 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-12-28 04:05:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 04:05:26,749 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 04:05:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-12-28 04:05:26,749 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-12-28 04:05:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-12-28 04:05:26,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-12-28 04:05:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 04:05:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 04:05:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 04:05:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 04:05:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:05:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-12-28 04:05:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-12-28 04:05:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-12-28 04:05:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-12-28 04:05:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-12-28 04:05:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-12-28 04:05:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-12-28 04:05:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-12-28 04:05:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-12-28 04:05:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-12-28 04:05:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-12-28 04:05:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-12-28 04:05:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:05:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 04:05:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 04:05:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-28 04:05:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:05:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:05:27,239 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:05:27,244 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:05:27,469 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:05:29,790 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:05:29,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:05:29,799 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:05:29,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:05:29 BoogieIcfgContainer [2021-12-28 04:05:29,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:05:29,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:05:29,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:05:29,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:05:29,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:05:25" (1/3) ... [2021-12-28 04:05:29,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227acdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:05:29, skipping insertion in model container [2021-12-28 04:05:29,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:05:26" (2/3) ... [2021-12-28 04:05:29,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227acdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:05:29, skipping insertion in model container [2021-12-28 04:05:29,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:05:29" (3/3) ... [2021-12-28 04:05:29,806 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-28 04:05:29,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:05:29,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:05:29,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:05:29,845 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 [2021-12-28 04:05:29,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:05:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2021-12-28 04:05:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 04:05:29,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:05:29,880 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:05:29,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:05:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:05:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1678977370, now seen corresponding path program 1 times [2021-12-28 04:05:29,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:05:29,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369203497] [2021-12-28 04:05:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:29,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:05:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:30,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:05:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:30,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:05:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:30,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:05:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 04:05:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:30,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:05:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 04:05:30,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:05:30,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369203497] [2021-12-28 04:05:30,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369203497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:05:30,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:05:30,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:05:30,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462588649] [2021-12-28 04:05:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:05:30,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:05:30,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:05:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:05:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:05:30,322 INFO L87 Difference]: Start difference. First operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 04:05:33,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:05:33,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:05:33,531 INFO L93 Difference]: Finished difference Result 2587 states and 3777 transitions. [2021-12-28 04:05:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:05:33,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-12-28 04:05:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:05:33,553 INFO L225 Difference]: With dead ends: 2587 [2021-12-28 04:05:33,553 INFO L226 Difference]: Without dead ends: 1520 [2021-12-28 04:05:33,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:05:33,567 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 910 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:05:33,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 3278 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-28 04:05:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-12-28 04:05:33,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1462. [2021-12-28 04:05:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1098 states have (on average 1.3852459016393444) internal successors, (1521), 1110 states have internal predecessors, (1521), 286 states have call successors, (286), 78 states have call predecessors, (286), 77 states have return successors, (285), 284 states have call predecessors, (285), 285 states have call successors, (285) [2021-12-28 04:05:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2092 transitions. [2021-12-28 04:05:33,681 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2092 transitions. Word has length 58 [2021-12-28 04:05:33,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:05:33,682 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 2092 transitions. [2021-12-28 04:05:33,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 04:05:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2092 transitions. [2021-12-28 04:05:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-28 04:05:33,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:05:33,693 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-28 04:05:33,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:05:33,693 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:05:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:05:33,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1282308759, now seen corresponding path program 1 times [2021-12-28 04:05:33,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:05:33,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818918148] [2021-12-28 04:05:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:33,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:05:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:05:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:05:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:05:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 04:05:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 04:05:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:05:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 04:05:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 04:05:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 04:05:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 04:05:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:05:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:05:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-28 04:05:34,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:05:34,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818918148] [2021-12-28 04:05:34,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818918148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:05:34,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:05:34,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:05:34,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712395044] [2021-12-28 04:05:34,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:05:34,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:05:34,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:05:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:05:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:05:34,043 INFO L87 Difference]: Start difference. First operand 1462 states and 2092 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-28 04:05:39,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:05:43,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:05:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:05:45,299 INFO L93 Difference]: Finished difference Result 3431 states and 5003 transitions. [2021-12-28 04:05:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 04:05:45,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2021-12-28 04:05:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:05:45,309 INFO L225 Difference]: With dead ends: 3431 [2021-12-28 04:05:45,309 INFO L226 Difference]: Without dead ends: 1978 [2021-12-28 04:05:45,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-28 04:05:45,317 INFO L933 BasicCegarLoop]: 1748 mSDtfsCounter, 606 mSDsluCounter, 6746 mSDsCounter, 0 mSdLazyCounter, 4240 mSolverCounterSat, 242 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 8494 SdHoareTripleChecker+Invalid, 4483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 4240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:05:45,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 8494 Invalid, 4483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 4240 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2021-12-28 04:05:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-12-28 04:05:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1468. [2021-12-28 04:05:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1103 states have (on average 1.3844061650045332) internal successors, (1527), 1115 states have internal predecessors, (1527), 286 states have call successors, (286), 78 states have call predecessors, (286), 78 states have return successors, (288), 285 states have call predecessors, (288), 285 states have call successors, (288) [2021-12-28 04:05:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-12-28 04:05:45,393 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 116 [2021-12-28 04:05:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:05:45,395 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-12-28 04:05:45,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-28 04:05:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-12-28 04:05:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 04:05:45,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:05:45,400 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-28 04:05:45,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:05:45,400 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:05:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:05:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash -942216361, now seen corresponding path program 1 times [2021-12-28 04:05:45,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:05:45,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441301137] [2021-12-28 04:05:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:05:45,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:05:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:05:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:05:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:05:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 04:05:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 04:05:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:05:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 04:05:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 04:05:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 04:05:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 04:05:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:05:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:05:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:05:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-28 04:05:45,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:05:45,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441301137] [2021-12-28 04:05:45,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441301137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:05:45,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:05:45,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 04:05:45,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493277196] [2021-12-28 04:05:45,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:05:45,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 04:05:45,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:05:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 04:05:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:05:45,722 INFO L87 Difference]: Start difference. First operand 1468 states and 2101 transitions. Second operand has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-28 04:05:52,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:05:57,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:05:59,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:06:00,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:06:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:06:03,735 INFO L93 Difference]: Finished difference Result 3446 states and 5028 transitions. [2021-12-28 04:06:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 04:06:03,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-12-28 04:06:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:06:03,744 INFO L225 Difference]: With dead ends: 3446 [2021-12-28 04:06:03,744 INFO L226 Difference]: Without dead ends: 1987 [2021-12-28 04:06:03,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-28 04:06:03,751 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 655 mSDsluCounter, 9112 mSDsCounter, 0 mSdLazyCounter, 5566 mSolverCounterSat, 370 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 10826 SdHoareTripleChecker+Invalid, 5938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 5566 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2021-12-28 04:06:03,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 10826 Invalid, 5938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 5566 Invalid, 2 Unknown, 0 Unchecked, 17.7s Time] [2021-12-28 04:06:03,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-12-28 04:06:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1468. [2021-12-28 04:06:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1103 states have (on average 1.3844061650045332) internal successors, (1527), 1115 states have internal predecessors, (1527), 286 states have call successors, (286), 78 states have call predecessors, (286), 78 states have return successors, (288), 285 states have call predecessors, (288), 285 states have call successors, (288) [2021-12-28 04:06:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-12-28 04:06:03,790 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 117 [2021-12-28 04:06:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:06:03,792 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-12-28 04:06:03,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-28 04:06:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-12-28 04:06:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 04:06:03,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:06:03,798 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-28 04:06:03,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:06:03,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:06:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:06:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1025870257, now seen corresponding path program 1 times [2021-12-28 04:06:03,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:06:03,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445081870] [2021-12-28 04:06:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:06:03,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:06:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:06:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:06:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:03,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:06:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 04:06:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 04:06:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:06:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 04:06:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 04:06:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 04:06:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 04:06:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:06:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:06:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-28 04:06:04,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:06:04,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445081870] [2021-12-28 04:06:04,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445081870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:06:04,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:06:04,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 04:06:04,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903544856] [2021-12-28 04:06:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:06:04,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 04:06:04,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:06:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 04:06:04,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:06:04,124 INFO L87 Difference]: Start difference. First operand 1468 states and 2101 transitions. Second operand has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-28 04:06:12,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:06:14,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:06:16,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:06:19,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:06:21,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:06:23,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:06:24,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:06:24,289 INFO L93 Difference]: Finished difference Result 4491 states and 6700 transitions. [2021-12-28 04:06:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 04:06:24,290 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-12-28 04:06:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:06:24,304 INFO L225 Difference]: With dead ends: 4491 [2021-12-28 04:06:24,304 INFO L226 Difference]: Without dead ends: 3032 [2021-12-28 04:06:24,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-28 04:06:24,312 INFO L933 BasicCegarLoop]: 2550 mSDtfsCounter, 1227 mSDsluCounter, 11893 mSDsCounter, 0 mSdLazyCounter, 6211 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 14443 SdHoareTripleChecker+Invalid, 6571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 6211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:06:24,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 14443 Invalid, 6571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 6211 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2021-12-28 04:06:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-12-28 04:06:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1475. [2021-12-28 04:06:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1109 states have (on average 1.3832281334535617) internal successors, (1534), 1121 states have internal predecessors, (1534), 286 states have call successors, (286), 78 states have call predecessors, (286), 79 states have return successors, (291), 286 states have call predecessors, (291), 285 states have call successors, (291) [2021-12-28 04:06:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2111 transitions. [2021-12-28 04:06:24,376 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2111 transitions. Word has length 117 [2021-12-28 04:06:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:06:24,377 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2111 transitions. [2021-12-28 04:06:24,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-28 04:06:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2111 transitions. [2021-12-28 04:06:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 04:06:24,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:06:24,387 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-28 04:06:24,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:06:24,388 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:06:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:06:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1266672241, now seen corresponding path program 1 times [2021-12-28 04:06:24,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:06:24,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281119787] [2021-12-28 04:06:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:06:24,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:06:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:06:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 04:06:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 04:06:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 04:06:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 04:06:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 04:06:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 04:06:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 04:06:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 04:06:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 04:06:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:06:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 04:06:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:06:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-28 04:06:24,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:06:24,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281119787] [2021-12-28 04:06:24,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281119787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:06:24,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:06:24,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 04:06:24,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68504415] [2021-12-28 04:06:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:06:24,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 04:06:24,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:06:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 04:06:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:06:24,756 INFO L87 Difference]: Start difference. First operand 1475 states and 2111 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-28 04:06:33,391 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 []