./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:20:34,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:20:34,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:20:34,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:20:34,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:20:34,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:20:34,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:20:34,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:20:34,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:20:34,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:20:34,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:20:34,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:20:34,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:20:34,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:20:34,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:20:34,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:20:34,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:20:34,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:20:34,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:20:34,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:20:34,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:20:34,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:20:34,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:20:34,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:20:34,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:20:34,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:20:34,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:20:34,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:20:34,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:20:34,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:20:34,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:20:34,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:20:34,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:20:34,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:20:34,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:20:34,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:20:34,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:20:34,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:20:34,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:20:34,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:20:34,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:20:34,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:20:34,989 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:20:34,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:20:34,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:20:34,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:20:34,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:20:34,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:20:34,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:20:34,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:20:34,991 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:20:34,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:20:34,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:20:34,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:20:34,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:20:34,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:20:34,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:20:34,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:20:34,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:20:34,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:20:34,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:20:34,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:20:34,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:20:34,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:20:34,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:20:34,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:20:34,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:20:34,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:20:34,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:20:34,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:20:34,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:20:34,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:20:35,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:20:35,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 [2021-12-21 16:20:35,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:20:35,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:20:35,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:20:35,196 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:20:35,197 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:20:35,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-21 16:20:35,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d83a6e5/d9aa7e9b7545478fa155ec7e508e8fba/FLAG10d9c20f1 [2021-12-21 16:20:35,752 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:20:35,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-21 16:20:35,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d83a6e5/d9aa7e9b7545478fa155ec7e508e8fba/FLAG10d9c20f1 [2021-12-21 16:20:36,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d83a6e5/d9aa7e9b7545478fa155ec7e508e8fba [2021-12-21 16:20:36,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:20:36,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:20:36,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:20:36,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:20:36,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:20:36,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:20:36" (1/1) ... [2021-12-21 16:20:36,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7d9a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:36, skipping insertion in model container [2021-12-21 16:20:36,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:20:36" (1/1) ... [2021-12-21 16:20:36,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:20:36,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:20:36,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-12-21 16:20:37,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:20:37,073 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:20:37,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-12-21 16:20:37,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:20:37,379 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:20:37,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37 WrapperNode [2021-12-21 16:20:37,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:20:37,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:20:37,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:20:37,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:20:37,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,502 INFO L137 Inliner]: procedures = 160, calls = 1221, calls flagged for inlining = 70, calls inlined = 70, statements flattened = 3023 [2021-12-21 16:20:37,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:20:37,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:20:37,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:20:37,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:20:37,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:20:37,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:20:37,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:20:37,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:20:37,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (1/1) ... [2021-12-21 16:20:37,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:20:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:20:37,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:20:37,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:20:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-12-21 16:20:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-12-21 16:20:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:20:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:20:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:20:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:20:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:20:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:20:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-12-21 16:20:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-12-21 16:20:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-12-21 16:20:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-12-21 16:20:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-12-21 16:20:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-12-21 16:20:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-12-21 16:20:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-12-21 16:20:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:20:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:20:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-21 16:20:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-21 16:20:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:20:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:20:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-12-21 16:20:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-12-21 16:20:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-12-21 16:20:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-12-21 16:20:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-12-21 16:20:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-12-21 16:20:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:20:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:20:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-21 16:20:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-21 16:20:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-12-21 16:20:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-12-21 16:20:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:20:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:20:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:20:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-21 16:20:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-21 16:20:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:20:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:20:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-21 16:20:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-21 16:20:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-12-21 16:20:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-12-21 16:20:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:20:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:20:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-12-21 16:20:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-12-21 16:20:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-12-21 16:20:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-12-21 16:20:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-12-21 16:20:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-12-21 16:20:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:20:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:20:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:20:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-12-21 16:20:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-12-21 16:20:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-12-21 16:20:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-12-21 16:20:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-12-21 16:20:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-12-21 16:20:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-12-21 16:20:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-12-21 16:20:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:20:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 16:20:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 16:20:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:20:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-12-21 16:20:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-12-21 16:20:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:20:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-21 16:20:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-21 16:20:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-21 16:20:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-21 16:20:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-12-21 16:20:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-12-21 16:20:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-12-21 16:20:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-12-21 16:20:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-12-21 16:20:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-12-21 16:20:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-12-21 16:20:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-12-21 16:20:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:20:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-21 16:20:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-21 16:20:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:20:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:20:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-12-21 16:20:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-12-21 16:20:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-21 16:20:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-21 16:20:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-12-21 16:20:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-12-21 16:20:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-12-21 16:20:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-12-21 16:20:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:20:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:20:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 16:20:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 16:20:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:20:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-12-21 16:20:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-12-21 16:20:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-12-21 16:20:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-12-21 16:20:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-12-21 16:20:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-12-21 16:20:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-12-21 16:20:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-12-21 16:20:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-12-21 16:20:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-12-21 16:20:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-12-21 16:20:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-12-21 16:20:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:20:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:20:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:20:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-21 16:20:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:20:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:20:38,179 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:20:38,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:20:38,374 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:20:40,748 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:20:40,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:20:40,766 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:20:40,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:20:40 BoogieIcfgContainer [2021-12-21 16:20:40,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:20:40,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:20:40,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:20:40,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:20:40,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:20:36" (1/3) ... [2021-12-21 16:20:40,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143f1025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:20:40, skipping insertion in model container [2021-12-21 16:20:40,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:20:37" (2/3) ... [2021-12-21 16:20:40,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143f1025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:20:40, skipping insertion in model container [2021-12-21 16:20:40,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:20:40" (3/3) ... [2021-12-21 16:20:40,778 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-21 16:20:40,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:20:40,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:20:40,827 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:20:40,833 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:20:40,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:20:40,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2021-12-21 16:20:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 16:20:40,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:20:40,882 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:20:40,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:20:40,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:20:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1678977370, now seen corresponding path program 1 times [2021-12-21 16:20:40,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:20:40,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634719945] [2021-12-21 16:20:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:20:40,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:20:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:20:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:20:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:20:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 16:20:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:41,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:20:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 16:20:41,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:20:41,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634719945] [2021-12-21 16:20:41,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634719945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:20:41,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:20:41,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:20:41,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643434034] [2021-12-21 16:20:41,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:20:41,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:20:41,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:20:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:20:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:20:41,352 INFO L87 Difference]: Start difference. First operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 16:20:45,064 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 [] [2021-12-21 16:20:46,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:20:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:20:46,621 INFO L93 Difference]: Finished difference Result 2587 states and 3777 transitions. [2021-12-21 16:20:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:20:46,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-12-21 16:20:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:20:46,639 INFO L225 Difference]: With dead ends: 2587 [2021-12-21 16:20:46,639 INFO L226 Difference]: Without dead ends: 1520 [2021-12-21 16:20:46,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:20:46,656 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 910 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 325 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:20:46,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 3404 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 838 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-12-21 16:20:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-12-21 16:20:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1462. [2021-12-21 16:20:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1098 states have (on average 1.3852459016393444) internal successors, (1521), 1110 states have internal predecessors, (1521), 286 states have call successors, (286), 78 states have call predecessors, (286), 77 states have return successors, (285), 284 states have call predecessors, (285), 285 states have call successors, (285) [2021-12-21 16:20:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2092 transitions. [2021-12-21 16:20:46,778 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2092 transitions. Word has length 58 [2021-12-21 16:20:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:20:46,779 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 2092 transitions. [2021-12-21 16:20:46,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 16:20:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2092 transitions. [2021-12-21 16:20:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-21 16:20:46,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:20:46,786 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:20:46,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:20:46,787 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:20:46,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:20:46,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1282308759, now seen corresponding path program 1 times [2021-12-21 16:20:46,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:20:46,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112983637] [2021-12-21 16:20:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:20:46,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:20:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:20:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:20:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:20:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 16:20:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:20:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:20:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:20:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 16:20:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 16:20:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 16:20:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:20:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:20:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:20:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-21 16:20:47,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:20:47,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112983637] [2021-12-21 16:20:47,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112983637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:20:47,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:20:47,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:20:47,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259614693] [2021-12-21 16:20:47,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:20:47,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:20:47,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:20:47,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:20:47,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:20:47,167 INFO L87 Difference]: Start difference. First operand 1462 states and 2092 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-21 16:20:52,761 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 [] [2021-12-21 16:20:54,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:20:58,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:00,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:21:02,165 INFO L93 Difference]: Finished difference Result 3431 states and 5003 transitions. [2021-12-21 16:21:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 16:21:02,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2021-12-21 16:21:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:21:02,175 INFO L225 Difference]: With dead ends: 3431 [2021-12-21 16:21:02,175 INFO L226 Difference]: Without dead ends: 1978 [2021-12-21 16:21:02,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-21 16:21:02,181 INFO L933 BasicCegarLoop]: 1749 mSDtfsCounter, 606 mSDsluCounter, 6867 mSDsCounter, 0 mSdLazyCounter, 4120 mSolverCounterSat, 242 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 8616 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 4120 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:21:02,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 8616 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 4120 Invalid, 4 Unknown, 0 Unchecked, 14.7s Time] [2021-12-21 16:21:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-12-21 16:21:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1468. [2021-12-21 16:21:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1103 states have (on average 1.3844061650045332) internal successors, (1527), 1115 states have internal predecessors, (1527), 286 states have call successors, (286), 78 states have call predecessors, (286), 78 states have return successors, (288), 285 states have call predecessors, (288), 285 states have call successors, (288) [2021-12-21 16:21:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-12-21 16:21:02,238 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 116 [2021-12-21 16:21:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:21:02,240 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-12-21 16:21:02,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-21 16:21:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-12-21 16:21:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 16:21:02,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:21:02,246 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:21:02,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:21:02,246 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:21:02,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:21:02,247 INFO L85 PathProgramCache]: Analyzing trace with hash -942216361, now seen corresponding path program 1 times [2021-12-21 16:21:02,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:21:02,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042436808] [2021-12-21 16:21:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:21:02,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:21:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:21:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:21:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:21:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 16:21:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:21:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:21:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:21:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 16:21:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 16:21:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 16:21:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:21:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:21:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-21 16:21:02,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:21:02,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042436808] [2021-12-21 16:21:02,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042436808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:21:02,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:21:02,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 16:21:02,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526019375] [2021-12-21 16:21:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:21:02,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 16:21:02,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:21:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 16:21:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:21:02,664 INFO L87 Difference]: Start difference. First operand 1468 states and 2101 transitions. Second operand has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-21 16:21:09,447 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 [] [2021-12-21 16:21:12,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:13,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:15,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:17,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:19,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:20,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:21,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:21:21,688 INFO L93 Difference]: Finished difference Result 3446 states and 5028 transitions. [2021-12-21 16:21:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 16:21:21,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-12-21 16:21:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:21:21,708 INFO L225 Difference]: With dead ends: 3446 [2021-12-21 16:21:21,708 INFO L226 Difference]: Without dead ends: 1987 [2021-12-21 16:21:21,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-21 16:21:21,715 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 655 mSDsluCounter, 9232 mSDsCounter, 0 mSdLazyCounter, 5445 mSolverCounterSat, 370 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 10946 SdHoareTripleChecker+Invalid, 5818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 5445 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:21:21,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 10946 Invalid, 5818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [370 Valid, 5445 Invalid, 3 Unknown, 0 Unchecked, 18.7s Time] [2021-12-21 16:21:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-12-21 16:21:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1468. [2021-12-21 16:21:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1103 states have (on average 1.3844061650045332) internal successors, (1527), 1115 states have internal predecessors, (1527), 286 states have call successors, (286), 78 states have call predecessors, (286), 78 states have return successors, (288), 285 states have call predecessors, (288), 285 states have call successors, (288) [2021-12-21 16:21:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-12-21 16:21:21,759 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 117 [2021-12-21 16:21:21,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:21:21,759 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-12-21 16:21:21,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-21 16:21:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-12-21 16:21:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 16:21:21,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:21:21,764 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:21:21,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:21:21,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:21:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:21:21,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1025870257, now seen corresponding path program 1 times [2021-12-21 16:21:21,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:21:21,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169509959] [2021-12-21 16:21:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:21:21,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:21:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:21:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:21:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:21:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 16:21:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:21:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:21:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:21:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 16:21:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 16:21:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 16:21:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:21:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:21:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-21 16:21:22,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:21:22,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169509959] [2021-12-21 16:21:22,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169509959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:21:22,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:21:22,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 16:21:22,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431801862] [2021-12-21 16:21:22,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:21:22,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 16:21:22,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:21:22,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 16:21:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:21:22,084 INFO L87 Difference]: Start difference. First operand 1468 states and 2101 transitions. Second operand has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-21 16:21:31,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:38,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:21:40,940 INFO L93 Difference]: Finished difference Result 4491 states and 6700 transitions. [2021-12-21 16:21:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 16:21:40,941 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-12-21 16:21:40,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:21:40,952 INFO L225 Difference]: With dead ends: 4491 [2021-12-21 16:21:40,952 INFO L226 Difference]: Without dead ends: 3032 [2021-12-21 16:21:40,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-21 16:21:40,957 INFO L933 BasicCegarLoop]: 2554 mSDtfsCounter, 1227 mSDsluCounter, 12197 mSDsCounter, 0 mSdLazyCounter, 5929 mSolverCounterSat, 358 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 14751 SdHoareTripleChecker+Invalid, 6288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 5929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:21:40,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 14751 Invalid, 6288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 5929 Invalid, 1 Unknown, 0 Unchecked, 18.5s Time] [2021-12-21 16:21:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-12-21 16:21:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1475. [2021-12-21 16:21:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1109 states have (on average 1.3832281334535617) internal successors, (1534), 1121 states have internal predecessors, (1534), 286 states have call successors, (286), 78 states have call predecessors, (286), 79 states have return successors, (291), 286 states have call predecessors, (291), 285 states have call successors, (291) [2021-12-21 16:21:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2111 transitions. [2021-12-21 16:21:41,003 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2111 transitions. Word has length 117 [2021-12-21 16:21:41,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:21:41,004 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2111 transitions. [2021-12-21 16:21:41,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-21 16:21:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2111 transitions. [2021-12-21 16:21:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 16:21:41,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:21:41,008 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:21:41,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:21:41,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:21:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:21:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1266672241, now seen corresponding path program 1 times [2021-12-21 16:21:41,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:21:41,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909743954] [2021-12-21 16:21:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:21:41,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:21:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:21:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:21:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:21:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 16:21:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:21:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:21:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:21:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 16:21:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 16:21:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 16:21:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:21:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:21:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-21 16:21:41,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:21:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909743954] [2021-12-21 16:21:41,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909743954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:21:41,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:21:41,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 16:21:41,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166863815] [2021-12-21 16:21:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:21:41,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 16:21:41,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:21:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 16:21:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:21:41,328 INFO L87 Difference]: Start difference. First operand 1475 states and 2111 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)