./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.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 a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:50:10,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:50:10,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:50:10,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:50:10,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:50:10,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:50:10,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:50:10,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:50:10,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:50:10,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:50:10,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:50:10,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:50:10,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:50:10,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:50:10,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:50:10,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:50:10,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:50:10,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:50:10,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:50:10,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:50:10,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:50:10,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:50:10,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:50:10,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:50:10,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:50:10,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:50:10,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:50:10,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:50:10,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:50:10,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:50:10,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:50:10,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:50:10,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:50:10,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:50:10,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:50:10,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:50:10,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:50:10,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:50:10,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:50:10,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:50:10,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:50:10,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:50:10,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:50:10,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:50:10,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:50:10,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:50:10,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:50:10,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:50:10,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:50:10,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:50:10,933 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:50:10,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:50:10,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:50:10,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:50:10,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:50:10,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:50:10,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:50:10,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:50:10,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:50:10,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:50:10,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:50:10,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:50:10,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:50:10,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:50:10,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:50:10,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:50:10,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:50:10,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:50:10,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:50:10,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:50:10,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:50:10,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:50:10,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:50:10,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2021-12-16 03:50:11,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:50:11,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:50:11,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:50:11,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:50:11,157 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:50:11,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-16 03:50:11,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f89a0f5/f1ca7f4b9ee248c1971ac3953d4b10fd/FLAG5bb8d668c [2021-12-16 03:50:11,913 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:50:11,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-16 03:50:11,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f89a0f5/f1ca7f4b9ee248c1971ac3953d4b10fd/FLAG5bb8d668c [2021-12-16 03:50:12,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f89a0f5/f1ca7f4b9ee248c1971ac3953d4b10fd [2021-12-16 03:50:12,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:50:12,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:50:12,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:50:12,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:50:12,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:50:12,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:50:12" (1/1) ... [2021-12-16 03:50:12,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f43727c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:12, skipping insertion in model container [2021-12-16 03:50:12,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:50:12" (1/1) ... [2021-12-16 03:50:12,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:50:12,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:50:13,175 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/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2021-12-16 03:50:13,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:50:13,348 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:50:13,561 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/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2021-12-16 03:50:13,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:50:13,751 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:50:13,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13 WrapperNode [2021-12-16 03:50:13,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:50:13,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:50:13,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:50:13,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:50:13,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:13,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,062 INFO L137 Inliner]: procedures = 184, calls = 1937, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5079 [2021-12-16 03:50:14,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:50:14,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:50:14,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:50:14,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:50:14,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:50:14,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:50:14,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:50:14,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:50:14,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (1/1) ... [2021-12-16 03:50:14,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:50:14,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:50:14,361 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) [2021-12-16 03:50:14,386 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 [2021-12-16 03:50:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-16 03:50:14,404 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-16 03:50:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-16 03:50:14,404 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-16 03:50:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-16 03:50:14,404 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-16 03:50:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-16 03:50:14,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-16 03:50:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-16 03:50:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-16 03:50:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-16 03:50:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-16 03:50:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2021-12-16 03:50:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2021-12-16 03:50:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:50:14,406 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2021-12-16 03:50:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2021-12-16 03:50:14,406 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-16 03:50:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-16 03:50:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-16 03:50:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-16 03:50:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-16 03:50:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-16 03:50:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2021-12-16 03:50:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2021-12-16 03:50:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2021-12-16 03:50:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2021-12-16 03:50:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:50:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:50:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2021-12-16 03:50:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2021-12-16 03:50:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-16 03:50:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-16 03:50:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-16 03:50:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-16 03:50:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-16 03:50:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-16 03:50:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2021-12-16 03:50:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2021-12-16 03:50:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-16 03:50:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-16 03:50:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:50:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 03:50:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 03:50:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:50:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:50:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-16 03:50:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-16 03:50:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2021-12-16 03:50:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2021-12-16 03:50:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:50:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:50:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2021-12-16 03:50:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2021-12-16 03:50:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2021-12-16 03:50:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2021-12-16 03:50:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2021-12-16 03:50:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2021-12-16 03:50:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2021-12-16 03:50:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2021-12-16 03:50:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:50:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 03:50:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 03:50:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-16 03:50:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-16 03:50:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:50:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:50:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2021-12-16 03:50:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2021-12-16 03:50:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-16 03:50:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-16 03:50:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:50:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-16 03:50:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-16 03:50:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-16 03:50:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-16 03:50:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-16 03:50:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-16 03:50:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-16 03:50:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-16 03:50:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-16 03:50:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-16 03:50:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-16 03:50:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-16 03:50:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:50:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-16 03:50:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-16 03:50:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:50:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2021-12-16 03:50:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2021-12-16 03:50:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-16 03:50:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-16 03:50:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:50:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-16 03:50:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-16 03:50:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2021-12-16 03:50:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2021-12-16 03:50:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2021-12-16 03:50:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2021-12-16 03:50:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-16 03:50:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-16 03:50:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-16 03:50:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-16 03:50:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-16 03:50:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-16 03:50:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-16 03:50:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-16 03:50:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:50:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-16 03:50:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-16 03:50:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:50:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:50:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-16 03:50:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-16 03:50:15,055 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:50:15,057 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:50:17,779 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:50:17,803 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:50:17,804 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:50:17,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:50:17 BoogieIcfgContainer [2021-12-16 03:50:17,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:50:17,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:50:17,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:50:17,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:50:17,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:50:12" (1/3) ... [2021-12-16 03:50:17,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b13c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:50:17, skipping insertion in model container [2021-12-16 03:50:17,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:50:13" (2/3) ... [2021-12-16 03:50:17,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b13c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:50:17, skipping insertion in model container [2021-12-16 03:50:17,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:50:17" (3/3) ... [2021-12-16 03:50:17,826 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-16 03:50:17,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:50:17,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:50:17,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:50:17,891 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 [2021-12-16 03:50:17,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:50:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2021-12-16 03:50:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 03:50:17,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:50:17,945 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] [2021-12-16 03:50:17,946 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:50:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:50:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash -773562485, now seen corresponding path program 1 times [2021-12-16 03:50:17,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:50:17,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107926548] [2021-12-16 03:50:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:50:17,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:50:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:50:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:18,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:50:18,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:50:18,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107926548] [2021-12-16 03:50:18,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107926548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:50:18,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:50:18,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:50:18,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519619666] [2021-12-16 03:50:18,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:50:18,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:50:18,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:50:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:50:18,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:50:18,844 INFO L87 Difference]: Start difference. First operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:50:20,932 INFO L93 Difference]: Finished difference Result 3995 states and 6578 transitions. [2021-12-16 03:50:20,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:50:20,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-16 03:50:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:50:20,964 INFO L225 Difference]: With dead ends: 3995 [2021-12-16 03:50:20,964 INFO L226 Difference]: Without dead ends: 2701 [2021-12-16 03:50:20,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:50:20,986 INFO L933 BasicCegarLoop]: 2386 mSDtfsCounter, 2134 mSDsluCounter, 3309 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 5695 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-16 03:50:20,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2295 Valid, 5695 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-16 03:50:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-12-16 03:50:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2534. [2021-12-16 03:50:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 1890 states have (on average 1.4804232804232804) internal successors, (2798), 1906 states have internal predecessors, (2798), 543 states have call successors, (543), 101 states have call predecessors, (543), 100 states have return successors, (534), 530 states have call predecessors, (534), 534 states have call successors, (534) [2021-12-16 03:50:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3875 transitions. [2021-12-16 03:50:21,190 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3875 transitions. Word has length 36 [2021-12-16 03:50:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:50:21,191 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 3875 transitions. [2021-12-16 03:50:21,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3875 transitions. [2021-12-16 03:50:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-16 03:50:21,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:50:21,196 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] [2021-12-16 03:50:21,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:50:21,196 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:50:21,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:50:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1794039467, now seen corresponding path program 1 times [2021-12-16 03:50:21,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:50:21,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179009563] [2021-12-16 03:50:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:50:21,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:50:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 03:50:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:50:21,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:50:21,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179009563] [2021-12-16 03:50:21,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179009563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:50:21,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:50:21,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:50:21,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394802740] [2021-12-16 03:50:21,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:50:21,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:50:21,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:50:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:50:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:50:21,487 INFO L87 Difference]: Start difference. First operand 2534 states and 3875 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:24,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:50:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:50:25,648 INFO L93 Difference]: Finished difference Result 7872 states and 12229 transitions. [2021-12-16 03:50:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:50:25,649 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-16 03:50:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:50:25,689 INFO L225 Difference]: With dead ends: 7872 [2021-12-16 03:50:25,689 INFO L226 Difference]: Without dead ends: 5341 [2021-12-16 03:50:25,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:50:25,709 INFO L933 BasicCegarLoop]: 2384 mSDtfsCounter, 2128 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 676 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:50:25,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2284 Valid, 5666 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-16 03:50:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-12-16 03:50:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5026. [2021-12-16 03:50:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 3752 states have (on average 1.4797441364605544) internal successors, (5552), 3776 states have internal predecessors, (5552), 1073 states have call successors, (1073), 201 states have call predecessors, (1073), 200 states have return successors, (1064), 1056 states have call predecessors, (1064), 1064 states have call successors, (1064) [2021-12-16 03:50:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7689 transitions. [2021-12-16 03:50:25,938 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7689 transitions. Word has length 38 [2021-12-16 03:50:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:50:25,939 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 7689 transitions. [2021-12-16 03:50:25,939 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7689 transitions. [2021-12-16 03:50:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 03:50:25,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:50:25,941 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] [2021-12-16 03:50:25,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:50:25,942 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:50:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:50:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1767320045, now seen corresponding path program 1 times [2021-12-16 03:50:25,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:50:25,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027871880] [2021-12-16 03:50:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:50:25,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:50:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:50:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:50:26,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:50:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027871880] [2021-12-16 03:50:26,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027871880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:50:26,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:50:26,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:50:26,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417814233] [2021-12-16 03:50:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:50:26,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:50:26,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:50:26,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:50:26,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:50:26,302 INFO L87 Difference]: Start difference. First operand 5026 states and 7689 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:29,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:50:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:50:30,545 INFO L93 Difference]: Finished difference Result 15564 states and 24181 transitions. [2021-12-16 03:50:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:50:30,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-12-16 03:50:30,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:50:30,609 INFO L225 Difference]: With dead ends: 15564 [2021-12-16 03:50:30,609 INFO L226 Difference]: Without dead ends: 10541 [2021-12-16 03:50:30,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:50:30,639 INFO L933 BasicCegarLoop]: 2412 mSDtfsCounter, 2107 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 647 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 5819 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:50:30,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2257 Valid, 5819 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 641 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-16 03:50:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-12-16 03:50:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 9930. [2021-12-16 03:50:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9930 states, 7424 states have (on average 1.4800646551724137) internal successors, (10988), 7464 states have internal predecessors, (10988), 2105 states have call successors, (2105), 401 states have call predecessors, (2105), 400 states have return successors, (2096), 2080 states have call predecessors, (2096), 2096 states have call successors, (2096) [2021-12-16 03:50:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 15189 transitions. [2021-12-16 03:50:31,077 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 15189 transitions. Word has length 39 [2021-12-16 03:50:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:50:31,078 INFO L470 AbstractCegarLoop]: Abstraction has 9930 states and 15189 transitions. [2021-12-16 03:50:31,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:31,079 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 15189 transitions. [2021-12-16 03:50:31,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 03:50:31,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:50:31,083 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] [2021-12-16 03:50:31,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:50:31,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:50:31,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:50:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1333303287, now seen corresponding path program 1 times [2021-12-16 03:50:31,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:50:31,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218105799] [2021-12-16 03:50:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:50:31,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:50:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:50:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:50:31,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:50:31,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218105799] [2021-12-16 03:50:31,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218105799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:50:31,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:50:31,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:50:31,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216046005] [2021-12-16 03:50:31,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:50:31,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:50:31,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:50:31,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:50:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:50:31,441 INFO L87 Difference]: Start difference. First operand 9930 states and 15189 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:33,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:50:33,853 INFO L93 Difference]: Finished difference Result 30888 states and 47985 transitions. [2021-12-16 03:50:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:50:33,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-16 03:50:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:50:33,982 INFO L225 Difference]: With dead ends: 30888 [2021-12-16 03:50:33,982 INFO L226 Difference]: Without dead ends: 20961 [2021-12-16 03:50:34,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:50:34,047 INFO L933 BasicCegarLoop]: 2480 mSDtfsCounter, 2122 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 5859 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:50:34,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 5859 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 03:50:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2021-12-16 03:50:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 19758. [2021-12-16 03:50:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19758 states, 14772 states have (on average 1.479014351475765) internal successors, (21848), 14844 states have internal predecessors, (21848), 4185 states have call successors, (4185), 801 states have call predecessors, (4185), 800 states have return successors, (4176), 4144 states have call predecessors, (4176), 4176 states have call successors, (4176) [2021-12-16 03:50:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19758 states to 19758 states and 30209 transitions. [2021-12-16 03:50:34,894 INFO L78 Accepts]: Start accepts. Automaton has 19758 states and 30209 transitions. Word has length 35 [2021-12-16 03:50:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:50:34,895 INFO L470 AbstractCegarLoop]: Abstraction has 19758 states and 30209 transitions. [2021-12-16 03:50:34,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 19758 states and 30209 transitions. [2021-12-16 03:50:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-16 03:50:34,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:50:34,897 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] [2021-12-16 03:50:34,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:50:34,897 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:50:34,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:50:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1420650670, now seen corresponding path program 1 times [2021-12-16 03:50:34,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:50:34,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394420115] [2021-12-16 03:50:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:50:34,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:50:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 03:50:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:35,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:50:35,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:50:35,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394420115] [2021-12-16 03:50:35,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394420115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:50:35,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:50:35,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:50:35,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266619465] [2021-12-16 03:50:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:50:35,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:50:35,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:50:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:50:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:50:35,155 INFO L87 Difference]: Start difference. First operand 19758 states and 30209 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:50:37,813 INFO L93 Difference]: Finished difference Result 61204 states and 95037 transitions. [2021-12-16 03:50:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:50:37,813 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-16 03:50:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:50:38,047 INFO L225 Difference]: With dead ends: 61204 [2021-12-16 03:50:38,050 INFO L226 Difference]: Without dead ends: 41449 [2021-12-16 03:50:38,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:50:38,147 INFO L933 BasicCegarLoop]: 2439 mSDtfsCounter, 2167 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 5944 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-16 03:50:38,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2336 Valid, 5944 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-16 03:50:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41449 states. [2021-12-16 03:50:39,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41449 to 39062. [2021-12-16 03:50:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39062 states, 29244 states have (on average 1.4799617015456161) internal successors, (43280), 29380 states have internal predecessors, (43280), 8217 states have call successors, (8217), 1601 states have call predecessors, (8217), 1600 states have return successors, (8208), 8144 states have call predecessors, (8208), 8208 states have call successors, (8208) [2021-12-16 03:50:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39062 states to 39062 states and 59705 transitions. [2021-12-16 03:50:39,949 INFO L78 Accepts]: Start accepts. Automaton has 39062 states and 59705 transitions. Word has length 38 [2021-12-16 03:50:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:50:39,963 INFO L470 AbstractCegarLoop]: Abstraction has 39062 states and 59705 transitions. [2021-12-16 03:50:39,964 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:39,964 INFO L276 IsEmpty]: Start isEmpty. Operand 39062 states and 59705 transitions. [2021-12-16 03:50:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 03:50:39,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:50:39,965 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] [2021-12-16 03:50:39,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:50:39,966 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:50:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:50:39,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1307690219, now seen corresponding path program 1 times [2021-12-16 03:50:39,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:50:39,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540562901] [2021-12-16 03:50:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:50:39,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:50:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:50:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:50:40,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:50:40,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540562901] [2021-12-16 03:50:40,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540562901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:50:40,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:50:40,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:50:40,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330358613] [2021-12-16 03:50:40,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:50:40,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:50:40,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:50:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:50:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:50:40,344 INFO L87 Difference]: Start difference. First operand 39062 states and 59705 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:50:43,736 INFO L93 Difference]: Finished difference Result 121724 states and 188965 transitions. [2021-12-16 03:50:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:50:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-16 03:50:43,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:50:44,321 INFO L225 Difference]: With dead ends: 121724 [2021-12-16 03:50:44,322 INFO L226 Difference]: Without dead ends: 82665 [2021-12-16 03:50:44,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:50:44,652 INFO L933 BasicCegarLoop]: 2562 mSDtfsCounter, 2119 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 6006 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:50:44,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2276 Valid, 6006 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 03:50:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82665 states. [2021-12-16 03:50:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82665 to 77910. [2021-12-16 03:50:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 58316 states have (on average 1.4791137938130188) internal successors, (86256), 58580 states have internal predecessors, (86256), 16393 states have call successors, (16393), 3201 states have call predecessors, (16393), 3200 states have return successors, (16384), 16256 states have call predecessors, (16384), 16384 states have call successors, (16384) [2021-12-16 03:50:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 119033 transitions. [2021-12-16 03:50:47,883 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 119033 transitions. Word has length 36 [2021-12-16 03:50:47,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:50:47,885 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 119033 transitions. [2021-12-16 03:50:47,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 119033 transitions. [2021-12-16 03:50:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 03:50:47,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:50:47,888 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] [2021-12-16 03:50:47,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:50:47,889 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:50:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:50:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash 978250436, now seen corresponding path program 1 times [2021-12-16 03:50:47,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:50:47,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676777611] [2021-12-16 03:50:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:50:47,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:50:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:48,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:50:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:48,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:50:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:50:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:50:48,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:50:48,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676777611] [2021-12-16 03:50:48,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676777611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:50:48,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:50:48,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:50:48,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585932059] [2021-12-16 03:50:48,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:50:48,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:50:48,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:50:48,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:50:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:50:48,410 INFO L87 Difference]: Start difference. First operand 77910 states and 119033 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:50:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:50:53,504 INFO L93 Difference]: Finished difference Result 242556 states and 376357 transitions. [2021-12-16 03:50:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:50:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2021-12-16 03:50:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:50:54,539 INFO L225 Difference]: With dead ends: 242556 [2021-12-16 03:50:54,539 INFO L226 Difference]: Without dead ends: 164649 [2021-12-16 03:50:54,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:50:54,893 INFO L933 BasicCegarLoop]: 2472 mSDtfsCounter, 2155 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 5857 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:50:54,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 5857 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 03:50:55,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164649 states. [2021-12-16 03:50:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164649 to 155158. [2021-12-16 03:50:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155158 states, 116108 states have (on average 1.4779343369965894) internal successors, (171600), 116628 states have internal predecessors, (171600), 32649 states have call successors, (32649), 6401 states have call predecessors, (32649), 6400 states have return successors, (32640), 32384 states have call predecessors, (32640), 32640 states have call successors, (32640) [2021-12-16 03:51:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155158 states to 155158 states and 236889 transitions. [2021-12-16 03:51:00,474 INFO L78 Accepts]: Start accepts. Automaton has 155158 states and 236889 transitions. Word has length 34 [2021-12-16 03:51:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:51:00,475 INFO L470 AbstractCegarLoop]: Abstraction has 155158 states and 236889 transitions. [2021-12-16 03:51:00,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 03:51:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 155158 states and 236889 transitions. [2021-12-16 03:51:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 03:51:00,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:51:00,477 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] [2021-12-16 03:51:00,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:51:00,477 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:51:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:51:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1315217039, now seen corresponding path program 1 times [2021-12-16 03:51:00,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:51:00,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368459420] [2021-12-16 03:51:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:51:00,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:51:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:51:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:51:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:51:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:51:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:51:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:51:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:51:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:51:00,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:51:00,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368459420] [2021-12-16 03:51:00,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368459420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:51:00,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:51:00,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:51:00,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333891039] [2021-12-16 03:51:00,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:51:00,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:51:00,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:51:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:51:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:51:00,753 INFO L87 Difference]: Start difference. First operand 155158 states and 236889 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)