./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 e19ca921 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-e19ca92 [2021-12-22 14:21:46,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:21:46,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:21:46,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:21:46,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:21:46,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:21:46,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:21:46,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:21:46,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:21:46,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:21:46,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:21:46,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:21:46,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:21:46,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:21:46,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:21:46,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:21:46,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:21:46,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:21:46,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:21:46,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:21:46,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:21:46,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:21:46,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:21:46,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:21:46,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:21:46,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:21:46,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:21:46,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:21:46,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:21:46,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:21:46,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:21:46,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:21:46,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:21:46,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:21:46,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:21:46,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:21:46,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:21:46,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:21:46,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:21:46,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:21:46,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:21:46,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:21:46,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:21:46,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:21:46,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:21:46,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:21:46,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:21:46,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:21:46,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:21:46,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:21:46,446 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:21:46,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:21:46,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:21:46,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:21:46,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:21:46,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:21:46,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:21:46,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:21:46,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:21:46,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:21:46,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:21:46,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:21:46,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:21:46,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:21:46,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:21:46,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:21:46,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:21:46,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:21:46,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:21:46,449 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:21:46,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:21:46,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:21:46,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:21:46,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eb9348af754e598a94b08c8ab1d1ba8b50e9f79e34a72936f4d36ffd0927628 [2021-12-22 14:21:46,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:21:46,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:21:46,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:21:46,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:21:46,687 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:21:46,688 INFO L432 ainManager$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 [2021-12-22 14:21:46,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aceba76/4185f9ca2c5d4e7faa77edc0f0a28be9/FLAG6509227fe [2021-12-22 14:21:47,301 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:21:47,302 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 [2021-12-22 14:21:47,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aceba76/4185f9ca2c5d4e7faa77edc0f0a28be9/FLAG6509227fe [2021-12-22 14:21:47,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aceba76/4185f9ca2c5d4e7faa77edc0f0a28be9 [2021-12-22 14:21:47,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:21:47,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:21:47,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:21:47,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:21:47,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:21:47,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:21:47" (1/1) ... [2021-12-22 14:21:47,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e6b640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:47, skipping insertion in model container [2021-12-22 14:21:47,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:21:47" (1/1) ... [2021-12-22 14:21:47,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:21:47,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:21:48,734 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] [2021-12-22 14:21:48,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:21:48,769 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:21:48,970 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] [2021-12-22 14:21:48,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:21:49,045 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:21:49,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49 WrapperNode [2021-12-22 14:21:49,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:21:49,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:21:49,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:21:49,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:21:49,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,223 INFO L137 Inliner]: procedures = 146, calls = 1210, calls flagged for inlining = 64, calls inlined = 64, statements flattened = 2797 [2021-12-22 14:21:49,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:21:49,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:21:49,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:21:49,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:21:49,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:21:49,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:21:49,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:21:49,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:21:49,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (1/1) ... [2021-12-22 14:21:49,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:21:49,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:21:49,413 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) [2021-12-22 14:21:49,474 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 [2021-12-22 14:21:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-12-22 14:21:49,486 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-12-22 14:21:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:21:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:21:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:21:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:21:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-12-22 14:21:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-12-22 14:21:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-12-22 14:21:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-12-22 14:21:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-12-22 14:21:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-12-22 14:21:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-12-22 14:21:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-12-22 14:21:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:21:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:21:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-22 14:21:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-22 14:21:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:21:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:21:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-12-22 14:21:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-12-22 14:21:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-12-22 14:21:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-12-22 14:21:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-12-22 14:21:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-12-22 14:21:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:21:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:21:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-22 14:21:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-22 14:21:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-12-22 14:21:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-12-22 14:21:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:21:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:21:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:21:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-22 14:21:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-22 14:21:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-12-22 14:21:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-12-22 14:21:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-22 14:21:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-22 14:21:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:21:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:21:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-12-22 14:21:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-12-22 14:21:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-12-22 14:21:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-12-22 14:21:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-12-22 14:21:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-12-22 14:21:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:21:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-12-22 14:21:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-12-22 14:21:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-12-22 14:21:49,493 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-12-22 14:21:49,493 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-12-22 14:21:49,493 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-12-22 14:21:49,494 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-12-22 14:21:49,494 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-12-22 14:21:49,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:21:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:21:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-12-22 14:21:49,495 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-12-22 14:21:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:21:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-22 14:21:49,496 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-22 14:21:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-12-22 14:21:49,496 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-12-22 14:21:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-12-22 14:21:49,496 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-12-22 14:21:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-12-22 14:21:49,496 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-12-22 14:21:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-12-22 14:21:49,497 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-12-22 14:21:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:21:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-22 14:21:49,498 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-22 14:21:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:21:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:21:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-12-22 14:21:49,499 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-12-22 14:21:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:21:49,499 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:21:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-12-22 14:21:49,499 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-12-22 14:21:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-12-22 14:21:49,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-12-22 14:21:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:21:49,500 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:21:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:21:49,500 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:21:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:21:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-22 14:21:49,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-22 14:21:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-12-22 14:21:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-12-22 14:21:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-12-22 14:21:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-12-22 14:21:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-12-22 14:21:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-12-22 14:21:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-12-22 14:21:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-12-22 14:21:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-12-22 14:21:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-12-22 14:21:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-12-22 14:21:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-12-22 14:21:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:21:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-22 14:21:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:21:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:21:49,926 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:21:49,930 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:21:52,827 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:21:52,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:21:52,858 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:21:52,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:21:52 BoogieIcfgContainer [2021-12-22 14:21:52,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:21:52,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:21:52,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:21:52,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:21:52,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:21:47" (1/3) ... [2021-12-22 14:21:52,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639aaae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:21:52, skipping insertion in model container [2021-12-22 14:21:52,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:21:49" (2/3) ... [2021-12-22 14:21:52,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639aaae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:21:52, skipping insertion in model container [2021-12-22 14:21:52,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:21:52" (3/3) ... [2021-12-22 14:21:52,873 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f-1.i [2021-12-22 14:21:52,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:21:52,879 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:21:52,928 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:21:52,937 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 [2021-12-22 14:21:52,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:21:52,978 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) [2021-12-22 14:21:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 14:21:52,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:52,999 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] [2021-12-22 14:21:52,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:53,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1364499313, now seen corresponding path program 1 times [2021-12-22 14:21:53,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:53,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431636078] [2021-12-22 14:21:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:53,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:21:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:21:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:21:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 14:21:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 14:21:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:21:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:21:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:21:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:21:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:21:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-22 14:21:53,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:53,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431636078] [2021-12-22 14:21:53,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431636078] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:21:53,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133806640] [2021-12-22 14:21:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:53,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:21:53,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:21:53,628 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) [2021-12-22 14:21:53,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:21:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 14:21:54,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:21:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-22 14:21:54,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:21:54,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133806640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:54,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:21:54,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-12-22 14:21:54,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028204849] [2021-12-22 14:21:54,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:54,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:21:54,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:21:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:21:54,262 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) [2021-12-22 14:21:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:54,419 INFO L93 Difference]: Finished difference Result 1939 states and 2828 transitions. [2021-12-22 14:21:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:21:54,422 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 [2021-12-22 14:21:54,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:54,436 INFO L225 Difference]: With dead ends: 1939 [2021-12-22 14:21:54,436 INFO L226 Difference]: Without dead ends: 959 [2021-12-22 14:21:54,449 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 [2021-12-22 14:21:54,452 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, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:21:54,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5575 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:21:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-12-22 14:21:54,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2021-12-22 14:21:54,518 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) [2021-12-22 14:21:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1388 transitions. [2021-12-22 14:21:54,525 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1388 transitions. Word has length 87 [2021-12-22 14:21:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:54,526 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1388 transitions. [2021-12-22 14:21:54,526 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) [2021-12-22 14:21:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1388 transitions. [2021-12-22 14:21:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 14:21:54,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:54,530 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] [2021-12-22 14:21:54,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:21:54,763 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 [2021-12-22 14:21:54,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1592292097, now seen corresponding path program 1 times [2021-12-22 14:21:54,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:54,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272073373] [2021-12-22 14:21:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:54,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:21:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:21:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:21:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 14:21:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:21:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:21:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:21:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:54,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 14:21:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:21:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:21:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-22 14:21:55,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:55,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272073373] [2021-12-22 14:21:55,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272073373] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:21:55,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219529141] [2021-12-22 14:21:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:55,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:21:55,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:21:55,048 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) [2021-12-22 14:21:55,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:21:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:55,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 14:21:55,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:21:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 14:21:55,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:21:55,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219529141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:55,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:21:55,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-12-22 14:21:55,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284721216] [2021-12-22 14:21:55,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:55,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:21:55,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:55,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:21:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:21:55,702 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) [2021-12-22 14:21:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:21:55,763 INFO L93 Difference]: Finished difference Result 1910 states and 2763 transitions. [2021-12-22 14:21:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:21:55,764 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 [2021-12-22 14:21:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:21:55,770 INFO L225 Difference]: With dead ends: 1910 [2021-12-22 14:21:55,771 INFO L226 Difference]: Without dead ends: 959 [2021-12-22 14:21:55,775 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 [2021-12-22 14:21:55,776 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 [2021-12-22 14:21:55,779 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] [2021-12-22 14:21:55,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-12-22 14:21:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2021-12-22 14:21:55,831 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) [2021-12-22 14:21:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1387 transitions. [2021-12-22 14:21:55,840 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1387 transitions. Word has length 90 [2021-12-22 14:21:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:21:55,841 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1387 transitions. [2021-12-22 14:21:55,841 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) [2021-12-22 14:21:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1387 transitions. [2021-12-22 14:21:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 14:21:55,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:21:55,846 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] [2021-12-22 14:21:55,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 14:21:56,061 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 [2021-12-22 14:21:56,062 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:21:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:21:56,062 INFO L85 PathProgramCache]: Analyzing trace with hash -893601957, now seen corresponding path program 2 times [2021-12-22 14:21:56,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:21:56,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172532063] [2021-12-22 14:21:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:21:56,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:21:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:21:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:21:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:21:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 14:21:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:21:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:21:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 14:21:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 14:21:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:21:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:21:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:21:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-22 14:21:56,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:21:56,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172532063] [2021-12-22 14:21:56,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172532063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:21:56,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:21:56,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:21:56,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10757333] [2021-12-22 14:21:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:21:56,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:21:56,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:21:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:21:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:21:56,423 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) [2021-12-22 14:22:02,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:05,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:05,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:05,868 INFO L93 Difference]: Finished difference Result 2119 states and 3094 transitions. [2021-12-22 14:22:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:22:05,869 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 [2021-12-22 14:22:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:05,880 INFO L225 Difference]: With dead ends: 2119 [2021-12-22 14:22:05,881 INFO L226 Difference]: Without dead ends: 1183 [2021-12-22 14:22:05,885 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 [2021-12-22 14:22:05,892 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 460 mSDsluCounter, 6567 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 225 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 8129 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:22:05,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 8129 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2832 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-12-22 14:22:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-12-22 14:22:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 965. [2021-12-22 14:22:05,927 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) [2021-12-22 14:22:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1396 transitions. [2021-12-22 14:22:05,935 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1396 transitions. Word has length 93 [2021-12-22 14:22:05,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:05,937 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1396 transitions. [2021-12-22 14:22:05,937 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) [2021-12-22 14:22:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1396 transitions. [2021-12-22 14:22:05,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 14:22:05,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:05,943 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] [2021-12-22 14:22:05,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:22:05,944 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:05,945 INFO L85 PathProgramCache]: Analyzing trace with hash 995231280, now seen corresponding path program 1 times [2021-12-22 14:22:05,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:05,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868500747] [2021-12-22 14:22:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:05,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:22:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:22:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:22:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 14:22:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:22:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:22:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 14:22:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 14:22:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:22:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:22:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-22 14:22:06,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:06,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868500747] [2021-12-22 14:22:06,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868500747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:06,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:06,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:22:06,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095568633] [2021-12-22 14:22:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:06,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:22:06,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:06,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:22:06,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:22:06,311 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) [2021-12-22 14:22:12,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:14,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:15,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:19,349 INFO L93 Difference]: Finished difference Result 2677 states and 3973 transitions. [2021-12-22 14:22:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 14:22:19,349 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 [2021-12-22 14:22:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:19,358 INFO L225 Difference]: With dead ends: 2677 [2021-12-22 14:22:19,358 INFO L226 Difference]: Without dead ends: 1735 [2021-12-22 14:22:19,362 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 [2021-12-22 14:22:19,363 INFO L933 BasicCegarLoop]: 2136 mSDtfsCounter, 1038 mSDsluCounter, 10773 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 326 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 12909 SdHoareTripleChecker+Invalid, 4142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:22:19,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 12909 Invalid, 4142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3815 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2021-12-22 14:22:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-12-22 14:22:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 966. [2021-12-22 14:22:19,396 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) [2021-12-22 14:22:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1397 transitions. [2021-12-22 14:22:19,401 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1397 transitions. Word has length 94 [2021-12-22 14:22:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:19,402 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1397 transitions. [2021-12-22 14:22:19,402 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) [2021-12-22 14:22:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1397 transitions. [2021-12-22 14:22:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 14:22:19,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:19,404 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] [2021-12-22 14:22:19,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:22:19,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:19,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash -980358125, now seen corresponding path program 1 times [2021-12-22 14:22:19,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:19,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441383052] [2021-12-22 14:22:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:19,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:22:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:22:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:22:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 14:22:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:22:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:22:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 14:22:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 14:22:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:22:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-22 14:22:19,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:19,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441383052] [2021-12-22 14:22:19,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441383052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:19,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:19,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:22:19,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286550274] [2021-12-22 14:22:19,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:19,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:22:19,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:19,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:22:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:22:19,725 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) [2021-12-22 14:22:28,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:31,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:33,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:35,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:37,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:37,637 INFO L93 Difference]: Finished difference Result 2136 states and 3121 transitions. [2021-12-22 14:22:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 14:22:37,637 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 [2021-12-22 14:22:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:37,643 INFO L225 Difference]: With dead ends: 2136 [2021-12-22 14:22:37,643 INFO L226 Difference]: Without dead ends: 1193 [2021-12-22 14:22:37,646 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 [2021-12-22 14:22:37,646 INFO L933 BasicCegarLoop]: 1555 mSDtfsCounter, 519 mSDsluCounter, 7632 mSDsCounter, 0 mSdLazyCounter, 3467 mSolverCounterSat, 264 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 9187 SdHoareTripleChecker+Invalid, 3735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 3467 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:22:37,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 9187 Invalid, 3735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 3467 Invalid, 4 Unknown, 0 Unchecked, 17.7s Time] [2021-12-22 14:22:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-12-22 14:22:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 972. [2021-12-22 14:22:37,664 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) [2021-12-22 14:22:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1406 transitions. [2021-12-22 14:22:37,669 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1406 transitions. Word has length 94 [2021-12-22 14:22:37,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:37,669 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1406 transitions. [2021-12-22 14:22:37,669 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) [2021-12-22 14:22:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1406 transitions. [2021-12-22 14:22:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 14:22:37,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:37,672 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] [2021-12-22 14:22:37,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:22:37,672 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1694209928, now seen corresponding path program 1 times [2021-12-22 14:22:37,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:37,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595931566] [2021-12-22 14:22:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:37,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:22:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:22:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:22:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 14:22:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:22:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:22:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 14:22:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 14:22:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:22:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:22:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-22 14:22:38,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:38,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595931566] [2021-12-22 14:22:38,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595931566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:38,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:38,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 14:22:38,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969118553] [2021-12-22 14:22:38,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:38,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 14:22:38,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:38,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 14:22:38,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:22:38,056 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) [2021-12-22 14:22:49,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:51,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:53,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:22:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:22:56,504 INFO L93 Difference]: Finished difference Result 2694 states and 4004 transitions. [2021-12-22 14:22:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 14:22:56,505 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 [2021-12-22 14:22:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:22:56,513 INFO L225 Difference]: With dead ends: 2694 [2021-12-22 14:22:56,514 INFO L226 Difference]: Without dead ends: 1745 [2021-12-22 14:22:56,519 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 [2021-12-22 14:22:56,521 INFO L933 BasicCegarLoop]: 2255 mSDtfsCounter, 985 mSDsluCounter, 14603 mSDsCounter, 0 mSdLazyCounter, 5597 mSolverCounterSat, 355 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 16858 SdHoareTripleChecker+Invalid, 5953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 5597 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:22:56,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 16858 Invalid, 5953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 5597 Invalid, 1 Unknown, 0 Unchecked, 18.2s Time] [2021-12-22 14:22:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2021-12-22 14:22:56,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 966. [2021-12-22 14:22:56,566 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) [2021-12-22 14:22:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1397 transitions. [2021-12-22 14:22:56,571 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1397 transitions. Word has length 95 [2021-12-22 14:22:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:22:56,572 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1397 transitions. [2021-12-22 14:22:56,572 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) [2021-12-22 14:22:56,572 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1397 transitions. [2021-12-22 14:22:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 14:22:56,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:22:56,578 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] [2021-12-22 14:22:56,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:22:56,578 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:22:56,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:22:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1532932020, now seen corresponding path program 1 times [2021-12-22 14:22:56,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:22:56,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958676516] [2021-12-22 14:22:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:22:56,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:22:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:22:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:22:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:22:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 14:22:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 14:22:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:22:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 14:22:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 14:22:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:22:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 14:22:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:22:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-22 14:22:56,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:22:56,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958676516] [2021-12-22 14:22:56,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958676516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:22:56,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:22:56,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:22:56,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745316114] [2021-12-22 14:22:56,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:22:56,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:22:56,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:22:56,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:22:56,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:22:56,859 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)