./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.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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.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 1610c58515d73bdfdad707c23c4cb637664025646e23343fbae03dec8c78d8dc --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:27:37,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:27:37,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:27:37,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:27:37,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:27:37,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:27:37,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:27:37,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:27:37,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:27:37,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:27:37,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:27:37,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:27:37,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:27:37,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:27:37,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:27:37,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:27:37,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:27:37,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:27:37,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:27:37,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:27:37,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:27:37,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:27:37,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:27:37,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:27:37,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:27:37,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:27:37,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:27:37,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:27:37,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:27:37,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:27:37,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:27:37,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:27:37,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:27:37,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:27:37,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:27:37,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:27:37,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:27:37,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:27:37,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:27:37,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:27:37,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:27:37,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:27:37,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:27:37,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:27:37,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:27:37,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:27:37,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:27:37,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:27:37,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:27:37,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:27:37,477 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:27:37,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:27:37,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:27:37,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:27:37,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:27:37,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:27:37,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:27:37,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:27:37,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:27:37,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:27:37,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:27:37,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:27:37,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:27:37,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:27:37,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:27:37,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:27:37,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:27:37,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:27:37,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:27:37,481 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:27:37,482 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:27:37,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:27:37,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:27:37,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1610c58515d73bdfdad707c23c4cb637664025646e23343fbae03dec8c78d8dc [2021-12-14 17:27:37,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:27:37,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:27:37,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:27:37,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:27:37,700 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:27:37,701 INFO L432 ainManager$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.i [2021-12-14 17:27:37,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3681b3bc/e42f1609b01448d2895956f54424ab32/FLAGfcc1224fd [2021-12-14 17:27:38,362 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:27:38,363 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.i [2021-12-14 17:27:38,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3681b3bc/e42f1609b01448d2895956f54424ab32/FLAGfcc1224fd [2021-12-14 17:27:38,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3681b3bc/e42f1609b01448d2895956f54424ab32 [2021-12-14 17:27:38,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:27:38,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:27:38,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:27:38,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:27:38,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:27:38,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:27:38" (1/1) ... [2021-12-14 17:27:38,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7758d823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:38, skipping insertion in model container [2021-12-14 17:27:38,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:27:38" (1/1) ... [2021-12-14 17:27:38,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:27:38,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:27:39,505 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.i[176229,176242] [2021-12-14 17:27:39,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:27:39,549 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:27:39,769 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.i[176229,176242] [2021-12-14 17:27:39,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:27:39,870 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:27:39,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39 WrapperNode [2021-12-14 17:27:39,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:27:39,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:27:39,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:27:39,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:27:39,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:39,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,001 INFO L137 Inliner]: procedures = 146, calls = 1210, calls flagged for inlining = 64, calls inlined = 64, statements flattened = 2797 [2021-12-14 17:27:40,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:27:40,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:27:40,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:27:40,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:27:40,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:27:40,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:27:40,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:27:40,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:27:40,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (1/1) ... [2021-12-14 17:27:40,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:27:40,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:27:40,193 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) [2021-12-14 17:27:40,203 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 [2021-12-14 17:27:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-12-14 17:27:40,228 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-12-14 17:27:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:27:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:27:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:27:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:27:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-12-14 17:27:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-12-14 17:27:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-12-14 17:27:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-12-14 17:27:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-12-14 17:27:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-12-14 17:27:40,229 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-12-14 17:27:40,229 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-12-14 17:27:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-14 17:27:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-14 17:27:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:27:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:27:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-12-14 17:27:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-12-14 17:27:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-12-14 17:27:40,230 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-12-14 17:27:40,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-12-14 17:27:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-12-14 17:27:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:27:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:27:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 17:27:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 17:27:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-12-14 17:27:40,231 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-12-14 17:27:40,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:27:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:27:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:27:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 17:27:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 17:27:40,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-12-14 17:27:40,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-12-14 17:27:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-14 17:27:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-14 17:27:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:27:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:27:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-12-14 17:27:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-12-14 17:27:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-12-14 17:27:40,233 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-12-14 17:27:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-12-14 17:27:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-12-14 17:27:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:27:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-12-14 17:27:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-12-14 17:27:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-12-14 17:27:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-12-14 17:27:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-12-14 17:27:40,235 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-12-14 17:27:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-12-14 17:27:40,235 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-12-14 17:27:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:27:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:27:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-12-14 17:27:40,237 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-12-14 17:27:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:27:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-14 17:27:40,237 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-14 17:27:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-12-14 17:27:40,237 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-12-14 17:27:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-12-14 17:27:40,237 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-12-14 17:27:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-12-14 17:27:40,238 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-12-14 17:27:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-12-14 17:27:40,238 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-12-14 17:27:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:27:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-14 17:27:40,238 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-14 17:27:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:27:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:27:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-12-14 17:27:40,239 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-12-14 17:27:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:27:40,239 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:27:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-12-14 17:27:40,240 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-12-14 17:27:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-12-14 17:27:40,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-12-14 17:27:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:27:40,240 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:27:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-14 17:27:40,240 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-14 17:27:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:27:40,240 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:27:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:27:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-14 17:27:40,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-14 17:27:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-12-14 17:27:40,241 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-12-14 17:27:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-12-14 17:27:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-12-14 17:27:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-12-14 17:27:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-12-14 17:27:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-12-14 17:27:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-12-14 17:27:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-12-14 17:27:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-12-14 17:27:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-12-14 17:27:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-12-14 17:27:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:27:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-14 17:27:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:27:40,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:27:40,635 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:27:40,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:27:43,132 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:27:43,147 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:27:43,148 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:27:43,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:27:43 BoogieIcfgContainer [2021-12-14 17:27:43,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:27:43,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:27:43,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:27:43,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:27:43,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:27:38" (1/3) ... [2021-12-14 17:27:43,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cd835a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:27:43, skipping insertion in model container [2021-12-14 17:27:43,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:39" (2/3) ... [2021-12-14 17:27:43,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cd835a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:27:43, skipping insertion in model container [2021-12-14 17:27:43,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:27:43" (3/3) ... [2021-12-14 17:27:43,160 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-radio-si4713-i2c-ko--111_1a--064368f.i [2021-12-14 17:27:43,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:27:43,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:27:43,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:27:43,225 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 [2021-12-14 17:27:43,226 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:27:43,261 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) [2021-12-14 17:27:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-14 17:27:43,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:43,280 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] [2021-12-14 17:27:43,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:43,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1335936085, now seen corresponding path program 1 times [2021-12-14 17:27:43,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:43,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057069338] [2021-12-14 17:27:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:43,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:27:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:27:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:27:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:27:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:27:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:27:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:27:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:27:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:27:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:27:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-14 17:27:43,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:43,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057069338] [2021-12-14 17:27:43,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057069338] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:27:43,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836726134] [2021-12-14 17:27:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:43,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:27:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:27:43,843 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) [2021-12-14 17:27:43,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:27:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:44,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 17:27:44,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:27:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 17:27:44,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:27:44,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836726134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:44,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:27:44,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-12-14 17:27:44,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183253751] [2021-12-14 17:27:44,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:44,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:27:44,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:44,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:27:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:27:44,631 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) [2021-12-14 17:27:44,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:44,787 INFO L93 Difference]: Finished difference Result 1939 states and 2828 transitions. [2021-12-14 17:27:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:27:44,792 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 [2021-12-14 17:27:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:44,811 INFO L225 Difference]: With dead ends: 1939 [2021-12-14 17:27:44,819 INFO L226 Difference]: Without dead ends: 959 [2021-12-14 17:27:44,830 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 [2021-12-14 17:27:44,833 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 [2021-12-14 17:27:44,834 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] [2021-12-14 17:27:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-12-14 17:27:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2021-12-14 17:27:44,939 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) [2021-12-14 17:27:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1388 transitions. [2021-12-14 17:27:44,952 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1388 transitions. Word has length 87 [2021-12-14 17:27:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:44,953 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1388 transitions. [2021-12-14 17:27:44,953 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) [2021-12-14 17:27:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1388 transitions. [2021-12-14 17:27:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-14 17:27:44,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:44,959 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] [2021-12-14 17:27:44,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:27:45,179 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 [2021-12-14 17:27:45,180 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1846867343, now seen corresponding path program 1 times [2021-12-14 17:27:45,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:45,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656228412] [2021-12-14 17:27:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:45,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:27:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:27:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 17:27:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:27:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:27:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:27:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:27:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:27:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:27:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-14 17:27:45,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:45,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656228412] [2021-12-14 17:27:45,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656228412] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:27:45,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245962688] [2021-12-14 17:27:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:45,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:27:45,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:27:45,472 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) [2021-12-14 17:27:45,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:27:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 17:27:45,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:27:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 17:27:46,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:27:46,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245962688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:46,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:27:46,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-12-14 17:27:46,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436928172] [2021-12-14 17:27:46,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:46,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:27:46,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:46,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:27:46,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:27:46,024 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) [2021-12-14 17:27:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:46,113 INFO L93 Difference]: Finished difference Result 1910 states and 2763 transitions. [2021-12-14 17:27:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:27:46,114 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 [2021-12-14 17:27:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:46,120 INFO L225 Difference]: With dead ends: 1910 [2021-12-14 17:27:46,120 INFO L226 Difference]: Without dead ends: 959 [2021-12-14 17:27:46,124 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 [2021-12-14 17:27:46,125 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 [2021-12-14 17:27:46,128 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] [2021-12-14 17:27:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-12-14 17:27:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2021-12-14 17:27:46,162 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) [2021-12-14 17:27:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1387 transitions. [2021-12-14 17:27:46,168 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1387 transitions. Word has length 90 [2021-12-14 17:27:46,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:46,168 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1387 transitions. [2021-12-14 17:27:46,168 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) [2021-12-14 17:27:46,169 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1387 transitions. [2021-12-14 17:27:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 17:27:46,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:46,172 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] [2021-12-14 17:27:46,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:27:46,393 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 [2021-12-14 17:27:46,393 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:46,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1634049463, now seen corresponding path program 2 times [2021-12-14 17:27:46,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:46,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400699596] [2021-12-14 17:27:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:46,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:27:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:27:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:27:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:27:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:27:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:27:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:27:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:27:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:27:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-14 17:27:46,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:46,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400699596] [2021-12-14 17:27:46,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400699596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:46,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:46,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:27:46,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692778828] [2021-12-14 17:27:46,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:46,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:27:46,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:46,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:27:46,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:27:46,668 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) [2021-12-14 17:27:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:53,773 INFO L93 Difference]: Finished difference Result 2119 states and 3094 transitions. [2021-12-14 17:27:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:27:53,773 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 [2021-12-14 17:27:53,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:53,783 INFO L225 Difference]: With dead ends: 2119 [2021-12-14 17:27:53,783 INFO L226 Difference]: Without dead ends: 1183 [2021-12-14 17:27:53,790 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 [2021-12-14 17:27:53,792 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 460 mSDsluCounter, 6563 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 8125 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:53,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 8125 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-12-14 17:27:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-12-14 17:27:53,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 965. [2021-12-14 17:27:53,822 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) [2021-12-14 17:27:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1396 transitions. [2021-12-14 17:27:53,828 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1396 transitions. Word has length 93 [2021-12-14 17:27:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:53,828 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1396 transitions. [2021-12-14 17:27:53,828 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) [2021-12-14 17:27:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1396 transitions. [2021-12-14 17:27:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 17:27:53,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:53,831 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] [2021-12-14 17:27:53,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:27:53,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1863657444, now seen corresponding path program 1 times [2021-12-14 17:27:53,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:53,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355223915] [2021-12-14 17:27:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:53,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:27:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:27:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:27:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:27:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:54,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:27:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:27:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:27:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:27:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:27:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-14 17:27:54,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:54,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355223915] [2021-12-14 17:27:54,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355223915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:54,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:54,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:27:54,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693740033] [2021-12-14 17:27:54,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:54,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:27:54,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:27:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:27:54,126 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) [2021-12-14 17:28:01,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:07,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:07,982 INFO L93 Difference]: Finished difference Result 2677 states and 3973 transitions. [2021-12-14 17:28:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:28:07,982 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 [2021-12-14 17:28:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:07,990 INFO L225 Difference]: With dead ends: 2677 [2021-12-14 17:28:07,990 INFO L226 Difference]: Without dead ends: 1735 [2021-12-14 17:28:07,994 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 [2021-12-14 17:28:08,004 INFO L933 BasicCegarLoop]: 2136 mSDtfsCounter, 1038 mSDsluCounter, 10773 mSDsCounter, 0 mSdLazyCounter, 3813 mSolverCounterSat, 326 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 12909 SdHoareTripleChecker+Invalid, 4141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3813 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:08,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 12909 Invalid, 4141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3813 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2021-12-14 17:28:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-12-14 17:28:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 966. [2021-12-14 17:28:08,071 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) [2021-12-14 17:28:08,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1397 transitions. [2021-12-14 17:28:08,077 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1397 transitions. Word has length 94 [2021-12-14 17:28:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:08,078 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1397 transitions. [2021-12-14 17:28:08,078 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) [2021-12-14 17:28:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1397 transitions. [2021-12-14 17:28:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 17:28:08,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:08,082 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] [2021-12-14 17:28:08,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:28:08,083 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:08,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:08,083 INFO L85 PathProgramCache]: Analyzing trace with hash 455720447, now seen corresponding path program 1 times [2021-12-14 17:28:08,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:08,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720034867] [2021-12-14 17:28:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:08,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:28:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:28:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:28:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:28:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:28:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:28:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:28:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:28:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:28:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-14 17:28:08,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:08,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720034867] [2021-12-14 17:28:08,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720034867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:08,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:08,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:28:08,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616681892] [2021-12-14 17:28:08,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:08,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:28:08,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:08,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:28:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:28:08,384 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) [2021-12-14 17:28:15,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:17,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:18,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:19,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:19,770 INFO L93 Difference]: Finished difference Result 2136 states and 3121 transitions. [2021-12-14 17:28:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:28:19,770 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 [2021-12-14 17:28:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:19,776 INFO L225 Difference]: With dead ends: 2136 [2021-12-14 17:28:19,777 INFO L226 Difference]: Without dead ends: 1193 [2021-12-14 17:28:19,781 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 [2021-12-14 17:28:19,782 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 519 mSDsluCounter, 7630 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 264 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 9184 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:19,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 9184 Invalid, 3731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 3466 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2021-12-14 17:28:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-12-14 17:28:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 972. [2021-12-14 17:28:19,840 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) [2021-12-14 17:28:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1406 transitions. [2021-12-14 17:28:19,844 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1406 transitions. Word has length 94 [2021-12-14 17:28:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:19,845 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1406 transitions. [2021-12-14 17:28:19,845 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) [2021-12-14 17:28:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1406 transitions. [2021-12-14 17:28:19,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-14 17:28:19,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:19,847 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] [2021-12-14 17:28:19,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:28:19,847 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:19,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:19,848 INFO L85 PathProgramCache]: Analyzing trace with hash 262848724, now seen corresponding path program 1 times [2021-12-14 17:28:19,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:19,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476493521] [2021-12-14 17:28:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:19,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:28:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:28:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:28:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:28:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:28:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:19,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:28:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:28:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:20,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:28:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:28:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:28:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-14 17:28:20,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:20,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476493521] [2021-12-14 17:28:20,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476493521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:20,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:20,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 17:28:20,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54984620] [2021-12-14 17:28:20,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:20,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:28:20,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:20,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:28:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:28:20,097 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) [2021-12-14 17:28:30,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:31,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:33,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:35,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:36,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:39,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:41,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:28:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:41,429 INFO L93 Difference]: Finished difference Result 2694 states and 4004 transitions. [2021-12-14 17:28:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 17:28:41,429 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 [2021-12-14 17:28:41,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:41,437 INFO L225 Difference]: With dead ends: 2694 [2021-12-14 17:28:41,437 INFO L226 Difference]: Without dead ends: 1745 [2021-12-14 17:28:41,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:28:41,441 INFO L933 BasicCegarLoop]: 2253 mSDtfsCounter, 985 mSDsluCounter, 14586 mSDsCounter, 0 mSdLazyCounter, 5592 mSolverCounterSat, 355 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 16839 SdHoareTripleChecker+Invalid, 5951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 5592 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:41,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 16839 Invalid, 5951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 5592 Invalid, 4 Unknown, 0 Unchecked, 21.0s Time] [2021-12-14 17:28:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2021-12-14 17:28:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 966. [2021-12-14 17:28:41,477 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) [2021-12-14 17:28:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1397 transitions. [2021-12-14 17:28:41,481 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1397 transitions. Word has length 95 [2021-12-14 17:28:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:41,482 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1397 transitions. [2021-12-14 17:28:41,482 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) [2021-12-14 17:28:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1397 transitions. [2021-12-14 17:28:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-14 17:28:41,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:41,484 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] [2021-12-14 17:28:41,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:28:41,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:41,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:41,485 INFO L85 PathProgramCache]: Analyzing trace with hash -804976624, now seen corresponding path program 1 times [2021-12-14 17:28:41,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:41,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995891338] [2021-12-14 17:28:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:41,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:28:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:28:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:28:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:28:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:28:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:28:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:28:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:28:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:28:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:28:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:28:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-14 17:28:41,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:28:41,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995891338] [2021-12-14 17:28:41,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995891338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:28:41,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:28:41,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:28:41,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227967285] [2021-12-14 17:28:41,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:28:41,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:28:41,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:28:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:28:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:28:41,715 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)