./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f-1.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-commit-tester/m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f-1.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 6eb9348af754e598a94b08c8ab1d1ba8b50e9f79e34a72936f4d36ffd0927628 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:40:01,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:40:01,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:40:01,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:40:01,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:40:01,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:40:01,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:40:01,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:40:01,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:40:01,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:40:01,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:40:01,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:40:01,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:40:02,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:40:02,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:40:02,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:40:02,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:40:02,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:40:02,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:40:02,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:40:02,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:40:02,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:40:02,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:40:02,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:40:02,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:40:02,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:40:02,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:40:02,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:40:02,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:40:02,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:40:02,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:40:02,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:40:02,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:40:02,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:40:02,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:40:02,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:40:02,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:40:02,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:40:02,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:40:02,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:40:02,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:40:02,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:40:02,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:40:02,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:40:02,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:40:02,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:40:02,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:40:02,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:40:02,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:40:02,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:40:02,066 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:40:02,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:40:02,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:40:02,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:40:02,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:40:02,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:40:02,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:40:02,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:40:02,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:40:02,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:40:02,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:40:02,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:40:02,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:40:02,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:40:02,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:40:02,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:40:02,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:40:02,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:40:02,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:40:02,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:40:02,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:40:02,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:40:02,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eb9348af754e598a94b08c8ab1d1ba8b50e9f79e34a72936f4d36ffd0927628 [2021-12-28 03:40:02,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:40:02,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:40:02,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:40:02,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:40:02,408 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:40:02,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f-1.i [2021-12-28 03:40:02,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75fa2459/015c3b0006a3453281aea5dcb5f30f91/FLAG81f7ad7df [2021-12-28 03:40:03,157 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:40:03,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f-1.i [2021-12-28 03:40:03,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75fa2459/015c3b0006a3453281aea5dcb5f30f91/FLAG81f7ad7df [2021-12-28 03:40:03,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75fa2459/015c3b0006a3453281aea5dcb5f30f91 [2021-12-28 03:40:03,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:40:03,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:40:03,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:40:03,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:40:03,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:40:03,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:40:03" (1/1) ... [2021-12-28 03:40:03,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272c3c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:03, skipping insertion in model container [2021-12-28 03:40:03,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:40:03" (1/1) ... [2021-12-28 03:40:03,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:40:03,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:40:04,535 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-commit-tester/m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f-1.i[176209,176222] [2021-12-28 03:40:04,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:40:04,577 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:40:04,796 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-commit-tester/m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f-1.i[176209,176222] [2021-12-28 03:40:04,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:40:04,915 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:40:04,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04 WrapperNode [2021-12-28 03:40:04,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:40:04,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:40:04,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:40:04,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:40:04,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:04,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,115 INFO L137 Inliner]: procedures = 146, calls = 1210, calls flagged for inlining = 64, calls inlined = 64, statements flattened = 2797 [2021-12-28 03:40:05,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:40:05,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:40:05,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:40:05,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:40:05,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:40:05,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:40:05,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:40:05,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:40:05,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (1/1) ... [2021-12-28 03:40:05,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:40:05,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:40:05,320 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 03:40:05,341 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 03:40:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-12-28 03:40:05,356 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-12-28 03:40:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:40:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:40:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:40:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:40:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-12-28 03:40:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-12-28 03:40:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-12-28 03:40:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-12-28 03:40:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-12-28 03:40:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-12-28 03:40:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-12-28 03:40:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-12-28 03:40:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:40:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:40:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-28 03:40:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-28 03:40:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:40:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:40:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-12-28 03:40:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-12-28 03:40:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-12-28 03:40:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-12-28 03:40:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-12-28 03:40:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-12-28 03:40:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:40:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:40:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-28 03:40:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-28 03:40:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-12-28 03:40:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-12-28 03:40:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:40:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:40:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:40:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 03:40:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 03:40:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-12-28 03:40:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-12-28 03:40:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-28 03:40:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-28 03:40:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:40:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:40:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-12-28 03:40:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-12-28 03:40:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-12-28 03:40:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-12-28 03:40:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-12-28 03:40:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-12-28 03:40:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:40:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-12-28 03:40:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-12-28 03:40:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-12-28 03:40:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-12-28 03:40:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-12-28 03:40:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-12-28 03:40:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-12-28 03:40:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-12-28 03:40:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:40:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:40:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-12-28 03:40:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-12-28 03:40:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:40:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-28 03:40:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-28 03:40:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-12-28 03:40:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-12-28 03:40:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-12-28 03:40:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-12-28 03:40:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-12-28 03:40:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-12-28 03:40:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-12-28 03:40:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-12-28 03:40:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:40:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-28 03:40:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-28 03:40:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:40:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:40:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-12-28 03:40:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-12-28 03:40:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:40:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:40:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-12-28 03:40:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-12-28 03:40:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-12-28 03:40:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-12-28 03:40:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:40:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:40:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 03:40:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 03:40:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:40:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-28 03:40:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-28 03:40:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-12-28 03:40:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-12-28 03:40:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-12-28 03:40:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-12-28 03:40:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-12-28 03:40:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-12-28 03:40:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-12-28 03:40:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-12-28 03:40:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-12-28 03:40:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-12-28 03:40:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-12-28 03:40:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-12-28 03:40:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:40:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-28 03:40:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:40:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:40:05,919 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:40:05,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:40:08,889 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:40:08,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:40:08,902 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:40:08,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:40:08 BoogieIcfgContainer [2021-12-28 03:40:08,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:40:08,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:40:08,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:40:08,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:40:08,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:40:03" (1/3) ... [2021-12-28 03:40:08,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a54c96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:40:08, skipping insertion in model container [2021-12-28 03:40:08,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:04" (2/3) ... [2021-12-28 03:40:08,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a54c96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:40:08, skipping insertion in model container [2021-12-28 03:40:08,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:40:08" (3/3) ... [2021-12-28 03:40:08,913 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f-1.i [2021-12-28 03:40:08,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:40:08,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:40:08,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:40:08,979 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 03:40:08,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:40:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 968 states, 708 states have (on average 1.3785310734463276) internal successors, (976), 716 states have internal predecessors, (976), 212 states have call successors, (212), 46 states have call predecessors, (212), 46 states have return successors, (212), 212 states have call predecessors, (212), 212 states have call successors, (212) [2021-12-28 03:40:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-28 03:40:09,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:09,048 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-28 03:40:09,049 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1364499313, now seen corresponding path program 1 times [2021-12-28 03:40:09,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:09,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097038771] [2021-12-28 03:40:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:09,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:40:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:40:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:40:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:40:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:40:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-28 03:40:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:40:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:40:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-28 03:40:09,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:09,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097038771] [2021-12-28 03:40:09,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097038771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:40:09,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089635492] [2021-12-28 03:40:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:09,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:40:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:40:09,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:40:09,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:40:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:10,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 03:40:10,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:40:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 03:40:10,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:40:10,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089635492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:10,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:40:10,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-12-28 03:40:10,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433220515] [2021-12-28 03:40:10,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:10,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:40:10,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:10,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:40:10,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:40:10,501 INFO L87 Difference]: Start difference. First operand has 968 states, 708 states have (on average 1.3785310734463276) internal successors, (976), 716 states have internal predecessors, (976), 212 states have call successors, (212), 46 states have call predecessors, (212), 46 states have return successors, (212), 212 states have call predecessors, (212), 212 states have call successors, (212) Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-28 03:40:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:10,746 INFO L93 Difference]: Finished difference Result 1939 states and 2828 transitions. [2021-12-28 03:40:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:40:10,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-12-28 03:40:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:10,772 INFO L225 Difference]: With dead ends: 1939 [2021-12-28 03:40:10,772 INFO L226 Difference]: Without dead ends: 959 [2021-12-28 03:40:10,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:40:10,787 INFO L933 BasicCegarLoop]: 1395 mSDtfsCounter, 3 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:10,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5575 Invalid, 12 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:40:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-12-28 03:40:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2021-12-28 03:40:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 700 states have (on average 1.37) internal successors, (959), 708 states have internal predecessors, (959), 211 states have call successors, (211), 46 states have call predecessors, (211), 47 states have return successors, (218), 211 states have call predecessors, (218), 211 states have call successors, (218) [2021-12-28 03:40:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1388 transitions. [2021-12-28 03:40:10,921 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1388 transitions. Word has length 87 [2021-12-28 03:40:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:10,921 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1388 transitions. [2021-12-28 03:40:10,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-28 03:40:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1388 transitions. [2021-12-28 03:40:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 03:40:10,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:10,928 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 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] [2021-12-28 03:40:10,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:40:11,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 03:40:11,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1592292097, now seen corresponding path program 1 times [2021-12-28 03:40:11,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:11,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280342171] [2021-12-28 03:40:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:11,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:40:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 03:40:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:40:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:40:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:40:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:40:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:40:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-28 03:40:11,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:11,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280342171] [2021-12-28 03:40:11,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280342171] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:40:11,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434525977] [2021-12-28 03:40:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:11,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:40:11,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:40:11,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:40:11,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:40:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:11,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 03:40:11,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:40:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 03:40:12,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:40:12,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434525977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:12,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:40:12,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-12-28 03:40:12,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158941756] [2021-12-28 03:40:12,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:12,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:40:12,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:40:12,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:40:12,096 INFO L87 Difference]: Start difference. First operand 959 states and 1388 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-28 03:40:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:12,155 INFO L93 Difference]: Finished difference Result 1910 states and 2763 transitions. [2021-12-28 03:40:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:40:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2021-12-28 03:40:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:12,161 INFO L225 Difference]: With dead ends: 1910 [2021-12-28 03:40:12,161 INFO L226 Difference]: Without dead ends: 959 [2021-12-28 03:40:12,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:40:12,166 INFO L933 BasicCegarLoop]: 1379 mSDtfsCounter, 0 mSDsluCounter, 4129 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5508 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:12,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5508 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:40:12,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-12-28 03:40:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2021-12-28 03:40:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 700 states have (on average 1.37) internal successors, (959), 708 states have internal predecessors, (959), 211 states have call successors, (211), 46 states have call predecessors, (211), 47 states have return successors, (217), 211 states have call predecessors, (217), 211 states have call successors, (217) [2021-12-28 03:40:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1387 transitions. [2021-12-28 03:40:12,202 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1387 transitions. Word has length 90 [2021-12-28 03:40:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:12,203 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1387 transitions. [2021-12-28 03:40:12,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-28 03:40:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1387 transitions. [2021-12-28 03:40:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-28 03:40:12,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:12,206 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:40:12,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:40:12,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 03:40:12,430 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:12,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:12,430 INFO L85 PathProgramCache]: Analyzing trace with hash -893601957, now seen corresponding path program 2 times [2021-12-28 03:40:12,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:12,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86340070] [2021-12-28 03:40:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:12,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:40:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:40:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:40:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:40:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:40:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:40:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:40:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-28 03:40:12,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:12,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86340070] [2021-12-28 03:40:12,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86340070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:12,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:12,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:40:12,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550636878] [2021-12-28 03:40:12,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:12,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:40:12,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:12,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:40:12,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:40:12,726 INFO L87 Difference]: Start difference. First operand 959 states and 1387 transitions. Second operand has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:18,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:20,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:21,961 INFO L93 Difference]: Finished difference Result 2119 states and 3094 transitions. [2021-12-28 03:40:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:40:21,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2021-12-28 03:40:21,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:21,969 INFO L225 Difference]: With dead ends: 2119 [2021-12-28 03:40:21,969 INFO L226 Difference]: Without dead ends: 1183 [2021-12-28 03:40:21,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 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 03:40:21,974 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 460 mSDsluCounter, 5934 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 225 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 7496 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:21,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 7496 Invalid, 3690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 3464 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-12-28 03:40:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-12-28 03:40:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 965. [2021-12-28 03:40:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 705 states have (on average 1.3687943262411348) internal successors, (965), 713 states have internal predecessors, (965), 211 states have call successors, (211), 46 states have call predecessors, (211), 48 states have return successors, (220), 212 states have call predecessors, (220), 211 states have call successors, (220) [2021-12-28 03:40:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1396 transitions. [2021-12-28 03:40:22,013 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1396 transitions. Word has length 93 [2021-12-28 03:40:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:22,013 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1396 transitions. [2021-12-28 03:40:22,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:22,014 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1396 transitions. [2021-12-28 03:40:22,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-28 03:40:22,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:22,017 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:40:22,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:40:22,017 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:22,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:22,018 INFO L85 PathProgramCache]: Analyzing trace with hash 995231280, now seen corresponding path program 1 times [2021-12-28 03:40:22,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:22,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267961632] [2021-12-28 03:40:22,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:22,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:40:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:40:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:40:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:40:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:40:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:40:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:40:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-28 03:40:22,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267961632] [2021-12-28 03:40:22,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267961632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:22,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:22,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:40:22,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24303847] [2021-12-28 03:40:22,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:22,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:40:22,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:40:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:40:22,364 INFO L87 Difference]: Start difference. First operand 965 states and 1396 transitions. Second operand has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:33,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:33,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:33,960 INFO L93 Difference]: Finished difference Result 2677 states and 3973 transitions. [2021-12-28 03:40:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:40:33,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2021-12-28 03:40:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:33,972 INFO L225 Difference]: With dead ends: 2677 [2021-12-28 03:40:33,972 INFO L226 Difference]: Without dead ends: 1735 [2021-12-28 03:40:33,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 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 03:40:33,978 INFO L933 BasicCegarLoop]: 2135 mSDtfsCounter, 1038 mSDsluCounter, 9687 mSDsCounter, 0 mSdLazyCounter, 4896 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 11822 SdHoareTripleChecker+Invalid, 5222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 4896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:33,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 11822 Invalid, 5222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 4896 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2021-12-28 03:40:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-12-28 03:40:34,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 966. [2021-12-28 03:40:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 706 states have (on average 1.368271954674221) internal successors, (966), 714 states have internal predecessors, (966), 211 states have call successors, (211), 46 states have call predecessors, (211), 48 states have return successors, (220), 212 states have call predecessors, (220), 211 states have call successors, (220) [2021-12-28 03:40:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1397 transitions. [2021-12-28 03:40:34,023 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1397 transitions. Word has length 94 [2021-12-28 03:40:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:34,024 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1397 transitions. [2021-12-28 03:40:34,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1397 transitions. [2021-12-28 03:40:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-28 03:40:34,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:34,027 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:40:34,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:40:34,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash -980358125, now seen corresponding path program 1 times [2021-12-28 03:40:34,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:34,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533493274] [2021-12-28 03:40:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:34,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:40:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:40:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:40:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:40:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:40:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:40:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:40:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:40:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-28 03:40:34,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:34,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533493274] [2021-12-28 03:40:34,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533493274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:34,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:34,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:40:34,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567434825] [2021-12-28 03:40:34,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:34,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:40:34,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:40:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:40:34,375 INFO L87 Difference]: Start difference. First operand 966 states and 1397 transitions. Second operand has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:41,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:42,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:44,550 INFO L93 Difference]: Finished difference Result 2136 states and 3121 transitions. [2021-12-28 03:40:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:40:44,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2021-12-28 03:40:44,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:44,558 INFO L225 Difference]: With dead ends: 2136 [2021-12-28 03:40:44,558 INFO L226 Difference]: Without dead ends: 1193 [2021-12-28 03:40:44,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:40:44,570 INFO L933 BasicCegarLoop]: 1555 mSDtfsCounter, 519 mSDsluCounter, 6979 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 8534 SdHoareTripleChecker+Invalid, 4388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:44,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 8534 Invalid, 4388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 4124 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2021-12-28 03:40:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-12-28 03:40:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 972. [2021-12-28 03:40:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 711 states have (on average 1.3670886075949367) internal successors, (972), 719 states have internal predecessors, (972), 211 states have call successors, (211), 46 states have call predecessors, (211), 49 states have return successors, (223), 213 states have call predecessors, (223), 211 states have call successors, (223) [2021-12-28 03:40:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1406 transitions. [2021-12-28 03:40:44,605 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1406 transitions. Word has length 94 [2021-12-28 03:40:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:44,606 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1406 transitions. [2021-12-28 03:40:44,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1406 transitions. [2021-12-28 03:40:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-28 03:40:44,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:44,609 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:40:44,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:40:44,609 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:44,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1694209928, now seen corresponding path program 1 times [2021-12-28 03:40:44,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:44,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832535163] [2021-12-28 03:40:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:44,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:40:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:40:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:40:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:40:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:40:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:40:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:40:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:40:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:40:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-28 03:40:45,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:45,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832535163] [2021-12-28 03:40:45,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832535163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:45,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:45,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 03:40:45,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593856463] [2021-12-28 03:40:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:45,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:40:45,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:40:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:40:45,008 INFO L87 Difference]: Start difference. First operand 972 states and 1406 transitions. Second operand has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:40:53,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:58,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:59,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:02,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:41:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:41:02,851 INFO L93 Difference]: Finished difference Result 2694 states and 4004 transitions. [2021-12-28 03:41:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 03:41:02,851 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2021-12-28 03:41:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:41:02,860 INFO L225 Difference]: With dead ends: 2694 [2021-12-28 03:41:02,860 INFO L226 Difference]: Without dead ends: 1745 [2021-12-28 03:41:02,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:41:02,865 INFO L933 BasicCegarLoop]: 2253 mSDtfsCounter, 985 mSDsluCounter, 13274 mSDsCounter, 0 mSdLazyCounter, 6910 mSolverCounterSat, 355 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 15527 SdHoareTripleChecker+Invalid, 7266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 6910 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:41:02,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 15527 Invalid, 7266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 6910 Invalid, 1 Unknown, 0 Unchecked, 17.6s Time] [2021-12-28 03:41:02,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2021-12-28 03:41:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 966. [2021-12-28 03:41:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 706 states have (on average 1.368271954674221) internal successors, (966), 714 states have internal predecessors, (966), 211 states have call successors, (211), 46 states have call predecessors, (211), 48 states have return successors, (220), 212 states have call predecessors, (220), 211 states have call successors, (220) [2021-12-28 03:41:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1397 transitions. [2021-12-28 03:41:02,898 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1397 transitions. Word has length 95 [2021-12-28 03:41:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:41:02,899 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1397 transitions. [2021-12-28 03:41:02,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-28 03:41:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1397 transitions. [2021-12-28 03:41:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-28 03:41:02,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:41:02,902 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:41:02,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:41:02,902 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:41:02,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:41:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1532932020, now seen corresponding path program 1 times [2021-12-28 03:41:02,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:41:02,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298521464] [2021-12-28 03:41:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:41:02,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:41:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:41:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:41:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:41:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:41:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:41:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:41:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 03:41:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 03:41:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:41:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 03:41:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:41:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-28 03:41:03,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:41:03,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298521464] [2021-12-28 03:41:03,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298521464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:41:03,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:41:03,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:41:03,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32968934] [2021-12-28 03:41:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:41:03,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:41:03,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:41:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:41:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:41:03,176 INFO L87 Difference]: Start difference. First operand 966 states and 1397 transitions. Second operand has 10 states, 8 states have (on average 6.875) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)