./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.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-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.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 178bcd25ed1eb86cc15df15af8dd3c1e4148e54d6c8cf5e12496bd14ffef1855 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:33:13,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:33:13,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:33:13,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:33:13,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:33:13,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:33:13,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:33:13,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:33:13,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:33:13,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:33:13,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:33:13,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:33:13,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:33:13,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:33:13,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:33:13,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:33:13,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:33:13,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:33:13,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:33:13,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:33:13,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:33:13,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:33:13,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:33:13,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:33:13,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:33:13,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:33:13,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:33:13,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:33:13,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:33:13,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:33:13,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:33:13,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:33:13,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:33:13,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:33:13,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:33:13,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:33:13,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:33:13,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:33:13,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:33:13,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:33:13,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:33:13,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:33:13,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:33:13,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:33:13,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:33:13,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:33:13,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:33:13,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:33:13,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:33:13,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:33:13,138 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:33:13,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:33:13,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:33:13,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:33:13,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:33:13,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:33:13,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:33:13,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:33:13,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:33:13,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:33:13,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:33:13,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:33:13,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:33:13,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:33:13,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:33:13,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:33:13,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:33:13,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:33:13,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:33:13,143 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:33:13,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:33:13,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:33:13,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:33:13,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 178bcd25ed1eb86cc15df15af8dd3c1e4148e54d6c8cf5e12496bd14ffef1855 [2021-12-22 14:33:13,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:33:13,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:33:13,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:33:13,395 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:33:13,395 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:33:13,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2021-12-22 14:33:13,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619641389/75380b41eeff4c76b8d56e95a6c1bbf9/FLAGe939efecd [2021-12-22 14:33:14,125 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:33:14,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2021-12-22 14:33:14,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619641389/75380b41eeff4c76b8d56e95a6c1bbf9/FLAGe939efecd [2021-12-22 14:33:14,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619641389/75380b41eeff4c76b8d56e95a6c1bbf9 [2021-12-22 14:33:14,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:33:14,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:33:14,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:33:14,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:33:14,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:33:14,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:33:14" (1/1) ... [2021-12-22 14:33:14,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d09f4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:14, skipping insertion in model container [2021-12-22 14:33:14,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:33:14" (1/1) ... [2021-12-22 14:33:14,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:33:14,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:33:15,635 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-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i[254705,254718] [2021-12-22 14:33:15,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:33:15,832 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:33:16,119 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-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i[254705,254718] [2021-12-22 14:33:16,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:33:16,467 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:33:16,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16 WrapperNode [2021-12-22 14:33:16,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:33:16,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:33:16,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:33:16,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:33:16,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:16,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:16,876 INFO L137 Inliner]: procedures = 243, calls = 6386, calls flagged for inlining = 118, calls inlined = 80, statements flattened = 7271 [2021-12-22 14:33:16,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:33:16,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:33:16,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:33:16,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:33:16,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:16,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:16,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:16,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:17,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:17,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:17,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:17,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:33:17,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:33:17,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:33:17,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:33:17,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (1/1) ... [2021-12-22 14:33:17,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:33:17,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:33:17,224 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 14:33:17,247 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 14:33:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure watchdog_enable [2021-12-22 14:33:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure watchdog_enable [2021-12-22 14:33:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:33:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:33:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_watchdog_lock_of_w83793_data [2021-12-22 14:33:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_watchdog_lock_of_w83793_data [2021-12-22 14:33:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure w83793_write_value [2021-12-22 14:33:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure w83793_write_value [2021-12-22 14:33:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_watchdog_data_mutex [2021-12-22 14:33:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_watchdog_data_mutex [2021-12-22 14:33:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure w83793_read_value [2021-12-22 14:33:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure w83793_read_value [2021-12-22 14:33:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-12-22 14:33:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-12-22 14:33:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:33:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:33:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:33:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:33:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-22 14:33:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-22 14:33:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-22 14:33:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-22 14:33:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:33:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:33:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:33:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-22 14:33:17,272 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-22 14:33:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:33:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-22 14:33:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:33:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:33:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:33:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:33:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-22 14:33:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-22 14:33:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-22 14:33:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-22 14:33:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-22 14:33:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-22 14:33:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:33:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:33:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:33:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-22 14:33:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-22 14:33:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:33:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:33:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_watchdog_lock_of_w83793_data [2021-12-22 14:33:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_watchdog_lock_of_w83793_data [2021-12-22 14:33:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:33:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-22 14:33:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-22 14:33:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:33:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:33:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:33:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:33:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:33:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_watchdog_data_mutex [2021-12-22 14:33:17,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_watchdog_data_mutex [2021-12-22 14:33:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure watchdog_disable [2021-12-22 14:33:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure watchdog_disable [2021-12-22 14:33:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-22 14:33:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-22 14:33:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure hwmon_device_unregister [2021-12-22 14:33:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure hwmon_device_unregister [2021-12-22 14:33:17,279 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-22 14:33:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-22 14:33:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure watchdog_trigger [2021-12-22 14:33:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure watchdog_trigger [2021-12-22 14:33:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:33:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-22 14:33:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-22 14:33:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-22 14:33:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-22 14:33:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:33:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:33:17,818 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:33:17,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:33:28,565 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:33:28,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:33:28,583 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 14:33:28,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:33:28 BoogieIcfgContainer [2021-12-22 14:33:28,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:33:28,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:33:28,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:33:28,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:33:28,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:33:14" (1/3) ... [2021-12-22 14:33:28,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e448554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:33:28, skipping insertion in model container [2021-12-22 14:33:28,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:33:16" (2/3) ... [2021-12-22 14:33:28,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e448554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:33:28, skipping insertion in model container [2021-12-22 14:33:28,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:33:28" (3/3) ... [2021-12-22 14:33:28,595 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2021-12-22 14:33:28,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:33:28,599 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:33:28,649 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:33:28,657 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 14:33:28,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:33:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 712 states, 509 states have (on average 1.381139489194499) internal successors, (703), 523 states have internal predecessors, (703), 170 states have call successors, (170), 31 states have call predecessors, (170), 31 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2021-12-22 14:33:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 14:33:28,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:28,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:28,699 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1430383953, now seen corresponding path program 1 times [2021-12-22 14:33:28,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:28,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889421216] [2021-12-22 14:33:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:28,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:29,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:29,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889421216] [2021-12-22 14:33:29,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889421216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:29,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:29,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:29,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379218572] [2021-12-22 14:33:29,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:29,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:29,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:29,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:29,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:29,818 INFO L87 Difference]: Start difference. First operand has 712 states, 509 states have (on average 1.381139489194499) internal successors, (703), 523 states have internal predecessors, (703), 170 states have call successors, (170), 31 states have call predecessors, (170), 31 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:30,278 INFO L93 Difference]: Finished difference Result 1418 states and 2144 transitions. [2021-12-22 14:33:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:30,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 14:33:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:30,300 INFO L225 Difference]: With dead ends: 1418 [2021-12-22 14:33:30,300 INFO L226 Difference]: Without dead ends: 705 [2021-12-22 14:33:30,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:30,324 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 1020 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:30,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 1025 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:33:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-12-22 14:33:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2021-12-22 14:33:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 505 states have (on average 1.3722772277227724) internal successors, (693), 516 states have internal predecessors, (693), 169 states have call successors, (169), 31 states have call predecessors, (169), 30 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-12-22 14:33:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1022 transitions. [2021-12-22 14:33:30,448 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1022 transitions. Word has length 9 [2021-12-22 14:33:30,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:30,449 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 1022 transitions. [2021-12-22 14:33:30,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1022 transitions. [2021-12-22 14:33:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 14:33:30,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:30,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:30,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:33:30,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1392603559, now seen corresponding path program 1 times [2021-12-22 14:33:30,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:30,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037649534] [2021-12-22 14:33:30,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:30,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:31,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:31,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037649534] [2021-12-22 14:33:31,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037649534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:31,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:31,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:31,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179964634] [2021-12-22 14:33:31,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:31,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:31,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:31,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:31,043 INFO L87 Difference]: Start difference. First operand 705 states and 1022 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:31,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:31,345 INFO L93 Difference]: Finished difference Result 707 states and 1023 transitions. [2021-12-22 14:33:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:31,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-22 14:33:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:31,352 INFO L225 Difference]: With dead ends: 707 [2021-12-22 14:33:31,352 INFO L226 Difference]: Without dead ends: 704 [2021-12-22 14:33:31,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:31,355 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 1013 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:31,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 1019 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:33:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-12-22 14:33:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2021-12-22 14:33:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 505 states have (on average 1.3702970297029704) internal successors, (692), 515 states have internal predecessors, (692), 168 states have call successors, (168), 31 states have call predecessors, (168), 30 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-12-22 14:33:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1020 transitions. [2021-12-22 14:33:31,397 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1020 transitions. Word has length 10 [2021-12-22 14:33:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:31,397 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1020 transitions. [2021-12-22 14:33:31,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1020 transitions. [2021-12-22 14:33:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 14:33:31,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:31,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:31,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:33:31,399 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash -221406478, now seen corresponding path program 1 times [2021-12-22 14:33:31,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:31,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125784484] [2021-12-22 14:33:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:31,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:31,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:31,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125784484] [2021-12-22 14:33:31,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125784484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:31,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:31,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:31,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047351481] [2021-12-22 14:33:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:31,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:31,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:31,990 INFO L87 Difference]: Start difference. First operand 704 states and 1020 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:32,298 INFO L93 Difference]: Finished difference Result 706 states and 1021 transitions. [2021-12-22 14:33:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:32,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-22 14:33:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:32,302 INFO L225 Difference]: With dead ends: 706 [2021-12-22 14:33:32,302 INFO L226 Difference]: Without dead ends: 703 [2021-12-22 14:33:32,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:32,304 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 1010 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:32,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1010 Valid, 1017 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:33:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-12-22 14:33:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2021-12-22 14:33:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 505 states have (on average 1.3683168316831684) internal successors, (691), 514 states have internal predecessors, (691), 167 states have call successors, (167), 31 states have call predecessors, (167), 30 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-12-22 14:33:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1018 transitions. [2021-12-22 14:33:32,330 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1018 transitions. Word has length 11 [2021-12-22 14:33:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:32,331 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 1018 transitions. [2021-12-22 14:33:32,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1018 transitions. [2021-12-22 14:33:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 14:33:32,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:32,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:32,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:33:32,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1725969532, now seen corresponding path program 1 times [2021-12-22 14:33:32,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:32,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083431381] [2021-12-22 14:33:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:32,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:32,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:32,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083431381] [2021-12-22 14:33:32,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083431381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:32,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:32,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:32,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171106120] [2021-12-22 14:33:32,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:32,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:32,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:32,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:32,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:32,869 INFO L87 Difference]: Start difference. First operand 703 states and 1018 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:33,175 INFO L93 Difference]: Finished difference Result 2011 states and 2918 transitions. [2021-12-22 14:33:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:33,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 14:33:33,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:33,184 INFO L225 Difference]: With dead ends: 2011 [2021-12-22 14:33:33,184 INFO L226 Difference]: Without dead ends: 1311 [2021-12-22 14:33:33,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:33,187 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 920 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:33,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 2109 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 14:33:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-12-22 14:33:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1306. [2021-12-22 14:33:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 950 states have (on average 1.3747368421052633) internal successors, (1306), 965 states have internal predecessors, (1306), 298 states have call successors, (298), 60 states have call predecessors, (298), 57 states have return successors, (290), 285 states have call predecessors, (290), 290 states have call successors, (290) [2021-12-22 14:33:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1894 transitions. [2021-12-22 14:33:33,239 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1894 transitions. Word has length 12 [2021-12-22 14:33:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:33,239 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 1894 transitions. [2021-12-22 14:33:33,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1894 transitions. [2021-12-22 14:33:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 14:33:33,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:33,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:33:33,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:33:33,241 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1965088565, now seen corresponding path program 1 times [2021-12-22 14:33:33,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:33,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753156571] [2021-12-22 14:33:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:33,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:33,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:33,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753156571] [2021-12-22 14:33:33,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753156571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:33,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:33,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:33:33,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048621472] [2021-12-22 14:33:33,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:33,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:33:33,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:33:33,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:33,757 INFO L87 Difference]: Start difference. First operand 1306 states and 1894 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:33,995 INFO L93 Difference]: Finished difference Result 1377 states and 1968 transitions. [2021-12-22 14:33:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:33:33,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-22 14:33:33,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:34,002 INFO L225 Difference]: With dead ends: 1377 [2021-12-22 14:33:34,003 INFO L226 Difference]: Without dead ends: 1367 [2021-12-22 14:33:34,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:33:34,004 INFO L933 BasicCegarLoop]: 1037 mSDtfsCounter, 940 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:34,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 1135 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 14:33:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-12-22 14:33:34,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1365. [2021-12-22 14:33:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 990 states have (on average 1.3575757575757577) internal successors, (1344), 1003 states have internal predecessors, (1344), 306 states have call successors, (306), 71 states have call predecessors, (306), 68 states have return successors, (300), 295 states have call predecessors, (300), 300 states have call successors, (300) [2021-12-22 14:33:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1950 transitions. [2021-12-22 14:33:34,054 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1950 transitions. Word has length 13 [2021-12-22 14:33:34,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:34,054 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 1950 transitions. [2021-12-22 14:33:34,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:34,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1950 transitions. [2021-12-22 14:33:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 14:33:34,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:34,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:34,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:33:34,058 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1573637770, now seen corresponding path program 1 times [2021-12-22 14:33:34,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:34,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278077810] [2021-12-22 14:33:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:34,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:33:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:33:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 14:33:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:34,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278077810] [2021-12-22 14:33:34,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278077810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:34,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:34,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:34,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891668420] [2021-12-22 14:33:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:34,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:34,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:34,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:34,649 INFO L87 Difference]: Start difference. First operand 1365 states and 1950 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:33:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:35,948 INFO L93 Difference]: Finished difference Result 2730 states and 3899 transitions. [2021-12-22 14:33:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:33:35,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-22 14:33:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:35,957 INFO L225 Difference]: With dead ends: 2730 [2021-12-22 14:33:35,957 INFO L226 Difference]: Without dead ends: 1368 [2021-12-22 14:33:35,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 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 14:33:35,966 INFO L933 BasicCegarLoop]: 1698 mSDtfsCounter, 904 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:35,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 3408 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 14:33:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2021-12-22 14:33:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1365. [2021-12-22 14:33:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 990 states have (on average 1.3545454545454545) internal successors, (1341), 1003 states have internal predecessors, (1341), 306 states have call successors, (306), 71 states have call predecessors, (306), 68 states have return successors, (295), 295 states have call predecessors, (295), 295 states have call successors, (295) [2021-12-22 14:33:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1942 transitions. [2021-12-22 14:33:36,025 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1942 transitions. Word has length 36 [2021-12-22 14:33:36,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:36,026 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 1942 transitions. [2021-12-22 14:33:36,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:33:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1942 transitions. [2021-12-22 14:33:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 14:33:36,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:36,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:36,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:33:36,030 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -609819484, now seen corresponding path program 1 times [2021-12-22 14:33:36,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:36,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776659528] [2021-12-22 14:33:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:36,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:33:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:33:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:33:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:36,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:36,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776659528] [2021-12-22 14:33:36,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776659528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:36,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:36,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:36,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51537196] [2021-12-22 14:33:36,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:36,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:36,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:36,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:36,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:36,564 INFO L87 Difference]: Start difference. First operand 1365 states and 1942 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:33:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:37,718 INFO L93 Difference]: Finished difference Result 3166 states and 4572 transitions. [2021-12-22 14:33:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:33:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-12-22 14:33:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:37,730 INFO L225 Difference]: With dead ends: 3166 [2021-12-22 14:33:37,730 INFO L226 Difference]: Without dead ends: 1804 [2021-12-22 14:33:37,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:37,738 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 612 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:37,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 2545 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 14:33:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-12-22 14:33:37,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1798. [2021-12-22 14:33:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1315 states have (on average 1.3741444866920152) internal successors, (1807), 1329 states have internal predecessors, (1807), 414 states have call successors, (414), 71 states have call predecessors, (414), 68 states have return successors, (403), 403 states have call predecessors, (403), 403 states have call successors, (403) [2021-12-22 14:33:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2624 transitions. [2021-12-22 14:33:37,812 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2624 transitions. Word has length 38 [2021-12-22 14:33:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:37,812 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 2624 transitions. [2021-12-22 14:33:37,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:33:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2624 transitions. [2021-12-22 14:33:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 14:33:37,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:37,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:37,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:33:37,817 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -777098256, now seen corresponding path program 1 times [2021-12-22 14:33:37,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:37,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424562788] [2021-12-22 14:33:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:37,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:38,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:33:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:33:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:38,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:38,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424562788] [2021-12-22 14:33:38,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424562788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:38,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:38,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:38,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42083083] [2021-12-22 14:33:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:38,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:38,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:38,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:38,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:38,546 INFO L87 Difference]: Start difference. First operand 1798 states and 2624 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 14:33:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:44,460 INFO L93 Difference]: Finished difference Result 5684 states and 8377 transitions. [2021-12-22 14:33:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:33:44,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-12-22 14:33:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:44,483 INFO L225 Difference]: With dead ends: 5684 [2021-12-22 14:33:44,483 INFO L226 Difference]: Without dead ends: 3889 [2021-12-22 14:33:44,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 14:33:44,493 INFO L933 BasicCegarLoop]: 1941 mSDtfsCounter, 1233 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:44,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 4321 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-22 14:33:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2021-12-22 14:33:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 2588. [2021-12-22 14:33:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2588 states, 1857 states have (on average 1.3489499192245558) internal successors, (2505), 1887 states have internal predecessors, (2505), 605 states have call successors, (605), 128 states have call predecessors, (605), 125 states have return successors, (618), 581 states have call predecessors, (618), 594 states have call successors, (618) [2021-12-22 14:33:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 3728 transitions. [2021-12-22 14:33:44,761 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 3728 transitions. Word has length 36 [2021-12-22 14:33:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:44,763 INFO L470 AbstractCegarLoop]: Abstraction has 2588 states and 3728 transitions. [2021-12-22 14:33:44,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 14:33:44,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 3728 transitions. [2021-12-22 14:33:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 14:33:44,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:44,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:44,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:33:44,766 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1132186480, now seen corresponding path program 1 times [2021-12-22 14:33:44,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:44,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650836677] [2021-12-22 14:33:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:44,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:33:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:33:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:45,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:45,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650836677] [2021-12-22 14:33:45,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650836677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:45,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:45,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:33:45,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186601487] [2021-12-22 14:33:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:45,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:33:45,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:33:45,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:33:45,434 INFO L87 Difference]: Start difference. First operand 2588 states and 3728 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 14:33:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:46,061 INFO L93 Difference]: Finished difference Result 3782 states and 5613 transitions. [2021-12-22 14:33:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:33:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2021-12-22 14:33:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:46,084 INFO L225 Difference]: With dead ends: 3782 [2021-12-22 14:33:46,085 INFO L226 Difference]: Without dead ends: 3708 [2021-12-22 14:33:46,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:33:46,089 INFO L933 BasicCegarLoop]: 2159 mSDtfsCounter, 1685 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 6742 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:46,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 6742 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:33:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2021-12-22 14:33:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 2519. [2021-12-22 14:33:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 1803 states have (on average 1.346089850249584) internal successors, (2427), 1829 states have internal predecessors, (2427), 593 states have call successors, (593), 124 states have call predecessors, (593), 122 states have return successors, (608), 572 states have call predecessors, (608), 584 states have call successors, (608) [2021-12-22 14:33:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3628 transitions. [2021-12-22 14:33:46,326 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3628 transitions. Word has length 39 [2021-12-22 14:33:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:46,327 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3628 transitions. [2021-12-22 14:33:46,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 14:33:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3628 transitions. [2021-12-22 14:33:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 14:33:46,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:46,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:46,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:33:46,330 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash 723958053, now seen corresponding path program 1 times [2021-12-22 14:33:46,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:46,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850177979] [2021-12-22 14:33:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:46,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:33:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:33:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:46,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:33:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:46,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:46,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850177979] [2021-12-22 14:33:46,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850177979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:46,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:46,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:33:46,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512525193] [2021-12-22 14:33:46,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:46,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:33:46,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:33:46,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:33:46,861 INFO L87 Difference]: Start difference. First operand 2519 states and 3628 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:33:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:47,471 INFO L93 Difference]: Finished difference Result 3839 states and 5649 transitions. [2021-12-22 14:33:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:33:47,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-12-22 14:33:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:47,487 INFO L225 Difference]: With dead ends: 3839 [2021-12-22 14:33:47,488 INFO L226 Difference]: Without dead ends: 2994 [2021-12-22 14:33:47,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:33:47,496 INFO L933 BasicCegarLoop]: 1744 mSDtfsCounter, 1630 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:47,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1631 Valid, 4948 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:33:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-12-22 14:33:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1805. [2021-12-22 14:33:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1287 states have (on average 1.3286713286713288) internal successors, (1710), 1299 states have internal predecessors, (1710), 427 states have call successors, (427), 91 states have call predecessors, (427), 90 states have return successors, (443), 420 states have call predecessors, (443), 426 states have call successors, (443) [2021-12-22 14:33:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2580 transitions. [2021-12-22 14:33:47,700 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2580 transitions. Word has length 39 [2021-12-22 14:33:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:47,701 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 2580 transitions. [2021-12-22 14:33:47,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:33:47,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2580 transitions. [2021-12-22 14:33:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 14:33:47,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:33:47,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:47,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 14:33:47,703 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:33:47,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:33:47,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1946233624, now seen corresponding path program 1 times [2021-12-22 14:33:47,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:33:47,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240765203] [2021-12-22 14:33:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:33:47,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:33:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:33:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 14:33:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:33:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:33:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:33:48,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:33:48,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240765203] [2021-12-22 14:33:48,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240765203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:33:48,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:33:48,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:33:48,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954991615] [2021-12-22 14:33:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:33:48,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:33:48,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:33:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:33:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:33:48,250 INFO L87 Difference]: Start difference. First operand 1805 states and 2580 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:33:49,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:33:49,146 INFO L93 Difference]: Finished difference Result 1805 states and 2580 transitions. [2021-12-22 14:33:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:33:49,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-12-22 14:33:49,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:33:49,150 INFO L225 Difference]: With dead ends: 1805 [2021-12-22 14:33:49,150 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 14:33:49,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 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 14:33:49,157 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 176 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:33:49,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 2275 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 14:33:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 14:33:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 14:33:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 14:33:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 14:33:49,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-12-22 14:33:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:33:49,160 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 14:33:49,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:33:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 14:33:49,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 14:33:49,162 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 14:33:49,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 14:33:49,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.