./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 e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-e19ca92 [2021-12-22 14:47:13,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:47:13,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:47:13,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:47:13,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:47:13,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:47:13,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:47:13,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:47:13,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:47:13,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:47:13,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:47:13,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:47:13,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:47:13,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:47:13,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:47:13,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:47:13,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:47:13,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:47:13,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:47:13,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:47:13,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:47:13,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:47:13,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:47:13,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:47:13,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:47:13,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:47:13,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:47:13,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:47:13,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:47:13,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:47:13,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:47:13,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:47:13,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:47:13,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:47:13,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:47:13,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:47:13,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:47:13,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:47:13,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:47:13,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:47:13,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:47:13,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:47:13,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:47:13,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:47:13,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:47:13,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:47:13,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:47:13,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:47:13,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:47:13,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:47:13,143 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:47:13,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:47:13,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:47:13,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:47:13,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:47:13,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:47:13,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:47:13,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:47:13,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:47:13,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:47:13,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:47:13,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:47:13,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:47:13,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:47:13,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:47:13,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:47:13,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:47:13,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:47:13,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:47:13,147 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:47:13,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:47:13,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:47:13,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:47:13,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 [2021-12-22 14:47:13,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:47:13,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:47:13,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:47:13,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:47:13,365 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:47:13,366 INFO L432 ainManager$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 [2021-12-22 14:47:13,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd2832ab/56c30aedaaf345b6b05734650780bc8a/FLAGc246eef22 [2021-12-22 14:47:13,945 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:47:13,945 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 [2021-12-22 14:47:13,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd2832ab/56c30aedaaf345b6b05734650780bc8a/FLAGc246eef22 [2021-12-22 14:47:14,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd2832ab/56c30aedaaf345b6b05734650780bc8a [2021-12-22 14:47:14,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:47:14,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:47:14,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:47:14,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:47:14,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:47:14,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:47:14" (1/1) ... [2021-12-22 14:47:14,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fe78bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:14, skipping insertion in model container [2021-12-22 14:47:14,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:47:14" (1/1) ... [2021-12-22 14:47:14,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:47:14,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:47:14,670 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] [2021-12-22 14:47:15,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:47:15,073 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:47:15,136 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] [2021-12-22 14:47:15,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:47:15,318 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:47:15,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15 WrapperNode [2021-12-22 14:47:15,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:47:15,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:47:15,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:47:15,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:47:15,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,460 INFO L137 Inliner]: procedures = 160, calls = 1221, calls flagged for inlining = 70, calls inlined = 70, statements flattened = 3023 [2021-12-22 14:47:15,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:47:15,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:47:15,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:47:15,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:47:15,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:47:15,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:47:15,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:47:15,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:47:15,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (1/1) ... [2021-12-22 14:47:15,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:47:15,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:47:15,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:47:15,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:47:15,737 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-12-22 14:47:15,737 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:47:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-12-22 14:47:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-12-22 14:47:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-12-22 14:47:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-12-22 14:47:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:47:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-22 14:47:15,738 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-22 14:47:15,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:47:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:47:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-12-22 14:47:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-12-22 14:47:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-12-22 14:47:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-12-22 14:47:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-12-22 14:47:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-12-22 14:47:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:47:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:47:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-22 14:47:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-22 14:47:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-12-22 14:47:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-12-22 14:47:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:47:15,739 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:47:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:47:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-22 14:47:15,740 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-22 14:47:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:47:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:47:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-22 14:47:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-22 14:47:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-12-22 14:47:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-12-22 14:47:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:47:15,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:47:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-12-22 14:47:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-12-22 14:47:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-12-22 14:47:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-12-22 14:47:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-12-22 14:47:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-12-22 14:47:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:47:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:47:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:47:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-12-22 14:47:15,744 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-12-22 14:47:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-12-22 14:47:15,744 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-12-22 14:47:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-12-22 14:47:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-12-22 14:47:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-12-22 14:47:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-12-22 14:47:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:47:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-22 14:47:15,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-22 14:47:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:47:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-12-22 14:47:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-12-22 14:47:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:47:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-22 14:47:15,746 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-22 14:47:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-22 14:47:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-22 14:47:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-12-22 14:47:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-12-22 14:47:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-12-22 14:47:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-12-22 14:47:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-12-22 14:47:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-12-22 14:47:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-12-22 14:47:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-12-22 14:47:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:47:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-22 14:47:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-22 14:47:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:47:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:47:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-12-22 14:47:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-12-22 14:47:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:47:15,749 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:47:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-12-22 14:47:15,749 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-12-22 14:47:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-12-22 14:47:15,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-12-22 14:47:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:47:15,750 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:47:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:47:15,750 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:47:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:47:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-12-22 14:47:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-12-22 14:47:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-12-22 14:47:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-12-22 14:47:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-12-22 14:47:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-12-22 14:47:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-12-22 14:47:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-12-22 14:47:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-12-22 14:47:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-12-22 14:47:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-12-22 14:47:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-12-22 14:47:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:47:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:47:15,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:47:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-22 14:47:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:47:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:47:16,171 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:47:16,175 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:47:16,372 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:47:18,587 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:47:18,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:47:18,601 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:47:18,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:47:18 BoogieIcfgContainer [2021-12-22 14:47:18,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:47:18,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:47:18,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:47:18,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:47:18,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:47:14" (1/3) ... [2021-12-22 14:47:18,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77227a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:47:18, skipping insertion in model container [2021-12-22 14:47:18,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:15" (2/3) ... [2021-12-22 14:47:18,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77227a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:47:18, skipping insertion in model container [2021-12-22 14:47:18,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:47:18" (3/3) ... [2021-12-22 14:47:18,614 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-22 14:47:18,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:47:18,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:47:18,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:47:18,672 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:47:18,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:47:18,706 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) [2021-12-22 14:47:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 14:47:18,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:47:18,728 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] [2021-12-22 14:47:18,729 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:47:18,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:47:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1678977370, now seen corresponding path program 1 times [2021-12-22 14:47:18,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:47:18,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805240323] [2021-12-22 14:47:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:47:18,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:47:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:47:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:47:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:47:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:19,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 14:47:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:47:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 14:47:19,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:47:19,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805240323] [2021-12-22 14:47:19,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805240323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:47:19,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:47:19,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:47:19,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934673546] [2021-12-22 14:47:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:47:19,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:47:19,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:47:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:47:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:47:19,270 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) [2021-12-22 14:47:22,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:47:22,884 INFO L93 Difference]: Finished difference Result 2587 states and 3777 transitions. [2021-12-22 14:47:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:47:22,886 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 [2021-12-22 14:47:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:47:22,902 INFO L225 Difference]: With dead ends: 2587 [2021-12-22 14:47:22,902 INFO L226 Difference]: Without dead ends: 1520 [2021-12-22 14:47:22,913 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 [2021-12-22 14:47:22,915 INFO L933 BasicCegarLoop]: 1518 mSDtfsCounter, 910 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 3407 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:47:22,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 3407 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-22 14:47:22,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-12-22 14:47:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1462. [2021-12-22 14:47:23,005 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) [2021-12-22 14:47:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2092 transitions. [2021-12-22 14:47:23,061 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2092 transitions. Word has length 58 [2021-12-22 14:47:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:47:23,061 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 2092 transitions. [2021-12-22 14:47:23,061 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) [2021-12-22 14:47:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2092 transitions. [2021-12-22 14:47:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-22 14:47:23,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:47:23,083 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] [2021-12-22 14:47:23,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:47:23,084 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:47:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:47:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1282308759, now seen corresponding path program 1 times [2021-12-22 14:47:23,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:47:23,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240786336] [2021-12-22 14:47:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:47:23,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:47:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:47:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:47:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:47:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 14:47:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:47:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:47:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 14:47:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 14:47:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:47:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 14:47:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:47:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:47:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-22 14:47:23,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:47:23,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240786336] [2021-12-22 14:47:23,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240786336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:47:23,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:47:23,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:47:23,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059388274] [2021-12-22 14:47:23,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:47:23,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:47:23,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:47:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:47:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:47:23,463 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) [2021-12-22 14:47:28,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:31,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:33,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:35,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:37,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:47:38,089 INFO L93 Difference]: Finished difference Result 3431 states and 5003 transitions. [2021-12-22 14:47:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:47:38,090 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 [2021-12-22 14:47:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:47:38,104 INFO L225 Difference]: With dead ends: 3431 [2021-12-22 14:47:38,104 INFO L226 Difference]: Without dead ends: 1978 [2021-12-22 14:47:38,110 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 [2021-12-22 14:47:38,111 INFO L933 BasicCegarLoop]: 1749 mSDtfsCounter, 606 mSDsluCounter, 6867 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 242 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 8616 SdHoareTripleChecker+Invalid, 4367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:47:38,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 8616 Invalid, 4367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 4124 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2021-12-22 14:47:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-12-22 14:47:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1468. [2021-12-22 14:47:38,173 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) [2021-12-22 14:47:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-12-22 14:47:38,179 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 116 [2021-12-22 14:47:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:47:38,181 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-12-22 14:47:38,182 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) [2021-12-22 14:47:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-12-22 14:47:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-22 14:47:38,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:47:38,186 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] [2021-12-22 14:47:38,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:47:38,187 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:47:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:47:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash -942216361, now seen corresponding path program 1 times [2021-12-22 14:47:38,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:47:38,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091927336] [2021-12-22 14:47:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:47:38,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:47:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:47:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:47:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:47:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 14:47:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:47:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:47:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 14:47:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 14:47:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:47:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 14:47:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:47:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:47:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-22 14:47:38,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:47:38,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091927336] [2021-12-22 14:47:38,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091927336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:47:38,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:47:38,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:47:38,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528715340] [2021-12-22 14:47:38,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:47:38,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:47:38,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:47:38,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:47:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:47:38,582 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) [2021-12-22 14:47:45,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:48,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:49,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:52,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:47:56,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:47:56,393 INFO L93 Difference]: Finished difference Result 3446 states and 5028 transitions. [2021-12-22 14:47:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 14:47:56,395 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 [2021-12-22 14:47:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:47:56,404 INFO L225 Difference]: With dead ends: 3446 [2021-12-22 14:47:56,404 INFO L226 Difference]: Without dead ends: 1987 [2021-12-22 14:47:56,408 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 [2021-12-22 14:47:56,414 INFO L933 BasicCegarLoop]: 1713 mSDtfsCounter, 655 mSDsluCounter, 9224 mSDsCounter, 0 mSdLazyCounter, 5445 mSolverCounterSat, 370 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 10937 SdHoareTripleChecker+Invalid, 5818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 5445 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:47:56,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 10937 Invalid, 5818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 5445 Invalid, 3 Unknown, 0 Unchecked, 17.5s Time] [2021-12-22 14:47:56,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-12-22 14:47:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1468. [2021-12-22 14:47:56,449 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) [2021-12-22 14:47:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-12-22 14:47:56,454 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 117 [2021-12-22 14:47:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:47:56,456 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-12-22 14:47:56,456 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) [2021-12-22 14:47:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-12-22 14:47:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-22 14:47:56,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:47:56,463 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] [2021-12-22 14:47:56,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:47:56,463 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:47:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:47:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1025870257, now seen corresponding path program 1 times [2021-12-22 14:47:56,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:47:56,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833694057] [2021-12-22 14:47:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:47:56,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:47:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:47:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:47:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:47:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 14:47:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:47:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:47:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 14:47:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 14:47:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:47:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 14:47:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:47:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:47:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:47:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-22 14:47:56,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:47:56,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833694057] [2021-12-22 14:47:56,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833694057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:47:56,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:47:56,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:47:56,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647033976] [2021-12-22 14:47:56,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:47:56,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:47:56,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:47:56,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:47:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:47:56,732 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) [2021-12-22 14:48:03,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:07,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:11,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:13,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:15,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:17,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:18,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:18,010 INFO L93 Difference]: Finished difference Result 4491 states and 6700 transitions. [2021-12-22 14:48:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 14:48:18,011 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 [2021-12-22 14:48:18,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:18,046 INFO L225 Difference]: With dead ends: 4491 [2021-12-22 14:48:18,046 INFO L226 Difference]: Without dead ends: 3032 [2021-12-22 14:48:18,071 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 [2021-12-22 14:48:18,073 INFO L933 BasicCegarLoop]: 2551 mSDtfsCounter, 1227 mSDsluCounter, 12189 mSDsCounter, 0 mSdLazyCounter, 5919 mSolverCounterSat, 360 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 14740 SdHoareTripleChecker+Invalid, 6282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 5919 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:18,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 14740 Invalid, 6282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 5919 Invalid, 3 Unknown, 0 Unchecked, 21.0s Time] [2021-12-22 14:48:18,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-12-22 14:48:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1475. [2021-12-22 14:48:18,142 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) [2021-12-22 14:48:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2111 transitions. [2021-12-22 14:48:18,147 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2111 transitions. Word has length 117 [2021-12-22 14:48:18,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:18,148 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2111 transitions. [2021-12-22 14:48:18,148 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) [2021-12-22 14:48:18,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2111 transitions. [2021-12-22 14:48:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 14:48:18,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:18,152 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] [2021-12-22 14:48:18,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:48:18,152 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:18,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1266672241, now seen corresponding path program 1 times [2021-12-22 14:48:18,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:18,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145987] [2021-12-22 14:48:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:18,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 14:48:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:48:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:48:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 14:48:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 14:48:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:48:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 14:48:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:48:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:48:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-22 14:48:18,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:18,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145987] [2021-12-22 14:48:18,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:18,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:18,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 14:48:18,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188849169] [2021-12-22 14:48:18,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:18,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 14:48:18,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 14:48:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:48:18,495 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)