./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 0f8a17c6 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 0.2.1-dev-0f8a17c [2021-11-16 23:49:11,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 23:49:11,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 23:49:11,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 23:49:11,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 23:49:11,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 23:49:11,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 23:49:11,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 23:49:11,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 23:49:11,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 23:49:11,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 23:49:11,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 23:49:11,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 23:49:11,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 23:49:11,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 23:49:11,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 23:49:11,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 23:49:11,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 23:49:11,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 23:49:11,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 23:49:11,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 23:49:11,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 23:49:11,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 23:49:11,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 23:49:11,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 23:49:11,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 23:49:11,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 23:49:11,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 23:49:11,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 23:49:11,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 23:49:11,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 23:49:11,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 23:49:11,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 23:49:11,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 23:49:11,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 23:49:11,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 23:49:11,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 23:49:11,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 23:49:11,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 23:49:11,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 23:49:11,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 23:49:11,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 23:49:11,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 23:49:11,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 23:49:11,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 23:49:11,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 23:49:11,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 23:49:11,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 23:49:11,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 23:49:11,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 23:49:11,927 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 23:49:11,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 23:49:11,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 23:49:11,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 23:49:11,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 23:49:11,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 23:49:11,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 23:49:11,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 23:49:11,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 23:49:11,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 23:49:11,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 23:49:11,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 23:49:11,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 23:49:11,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:49:11,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 23:49:11,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 23:49:11,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 23:49:11,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 23:49:11,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 23:49:11,931 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 23:49:11,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 23:49:11,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 23:49:11,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 23:49:11,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2021-11-16 23:49:12,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 23:49:12,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 23:49:12,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 23:49:12,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 23:49:12,151 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 23:49:12,152 INFO L432 ainManager$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 [2021-11-16 23:49:12,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7994996/f58fee22c2854f89a03d8324a8ab1544/FLAGb10939a84 [2021-11-16 23:49:12,750 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 23:49:12,750 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 [2021-11-16 23:49:12,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7994996/f58fee22c2854f89a03d8324a8ab1544/FLAGb10939a84 [2021-11-16 23:49:12,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df7994996/f58fee22c2854f89a03d8324a8ab1544 [2021-11-16 23:49:12,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 23:49:12,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 23:49:12,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 23:49:12,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 23:49:12,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 23:49:12,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:12" (1/1) ... [2021-11-16 23:49:12,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd9599d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:12, skipping insertion in model container [2021-11-16 23:49:12,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:12" (1/1) ... [2021-11-16 23:49:12,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 23:49:13,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 23:49:13,773 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] [2021-11-16 23:49:13,843 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:49:13,896 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 23:49:14,077 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] [2021-11-16 23:49:14,095 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:49:14,231 INFO L208 MainTranslator]: Completed translation [2021-11-16 23:49:14,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14 WrapperNode [2021-11-16 23:49:14,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 23:49:14,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 23:49:14,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 23:49:14,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 23:49:14,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,415 INFO L137 Inliner]: procedures = 184, calls = 1937, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5012 [2021-11-16 23:49:14,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 23:49:14,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 23:49:14,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 23:49:14,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 23:49:14,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 23:49:14,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 23:49:14,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 23:49:14,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 23:49:14,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (1/1) ... [2021-11-16 23:49:14,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:49:14,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 23:49:14,623 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) [2021-11-16 23:49:14,641 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 [2021-11-16 23:49:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-11-16 23:49:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-11-16 23:49:14,654 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-16 23:49:14,655 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-16 23:49:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-11-16 23:49:14,655 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-11-16 23:49:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-11-16 23:49:14,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-11-16 23:49:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-11-16 23:49:14,655 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-11-16 23:49:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-11-16 23:49:14,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-11-16 23:49:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2021-11-16 23:49:14,656 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2021-11-16 23:49:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 23:49:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2021-11-16 23:49:14,656 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2021-11-16 23:49:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-11-16 23:49:14,656 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-11-16 23:49:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-16 23:49:14,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-16 23:49:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-16 23:49:14,657 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-16 23:49:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2021-11-16 23:49:14,657 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2021-11-16 23:49:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2021-11-16 23:49:14,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2021-11-16 23:49:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-16 23:49:14,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-16 23:49:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2021-11-16 23:49:14,658 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2021-11-16 23:49:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-11-16 23:49:14,658 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-11-16 23:49:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2021-11-16 23:49:14,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2021-11-16 23:49:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-11-16 23:49:14,658 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-11-16 23:49:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2021-11-16 23:49:14,659 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2021-11-16 23:49:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-11-16 23:49:14,659 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-11-16 23:49:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 23:49:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-16 23:49:14,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-16 23:49:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-16 23:49:14,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-16 23:49:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-11-16 23:49:14,660 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-11-16 23:49:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2021-11-16 23:49:14,660 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2021-11-16 23:49:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-16 23:49:14,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-16 23:49:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2021-11-16 23:49:14,661 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2021-11-16 23:49:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2021-11-16 23:49:14,661 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2021-11-16 23:49:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2021-11-16 23:49:14,662 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2021-11-16 23:49:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2021-11-16 23:49:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2021-11-16 23:49:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 23:49:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-16 23:49:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-16 23:49:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-11-16 23:49:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-11-16 23:49:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 23:49:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 23:49:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2021-11-16 23:49:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2021-11-16 23:49:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-11-16 23:49:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-11-16 23:49:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 23:49:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-11-16 23:49:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-11-16 23:49:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-11-16 23:49:14,665 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-11-16 23:49:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-11-16 23:49:14,665 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-11-16 23:49:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-11-16 23:49:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-11-16 23:49:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-11-16 23:49:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-11-16 23:49:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2021-11-16 23:49:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-16 23:49:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-11-16 23:49:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-11-16 23:49:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2021-11-16 23:49:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2021-11-16 23:49:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-16 23:49:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-11-16 23:49:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-16 23:49:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-11-16 23:49:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-11-16 23:49:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 23:49:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 23:49:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-16 23:49:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-16 23:49:15,282 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 23:49:15,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 23:49:20,731 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 23:49:20,748 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 23:49:20,749 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 23:49:20,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:20 BoogieIcfgContainer [2021-11-16 23:49:20,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 23:49:20,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 23:49:20,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 23:49:20,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 23:49:20,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:49:12" (1/3) ... [2021-11-16 23:49:20,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200f3db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:20, skipping insertion in model container [2021-11-16 23:49:20,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:14" (2/3) ... [2021-11-16 23:49:20,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200f3db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:20, skipping insertion in model container [2021-11-16 23:49:20,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:20" (3/3) ... [2021-11-16 23:49:20,767 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-11-16 23:49:20,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 23:49:20,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 23:49:20,822 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 23:49:20,835 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 [2021-11-16 23:49:20,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 23:49:20,878 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) [2021-11-16 23:49:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-16 23:49:20,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:20,890 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] [2021-11-16 23:49:20,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -773562485, now seen corresponding path program 1 times [2021-11-16 23:49:20,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:20,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70914846] [2021-11-16 23:49:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:20,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-16 23:49:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:21,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:21,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:21,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70914846] [2021-11-16 23:49:21,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70914846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:21,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:21,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:21,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405713954] [2021-11-16 23:49:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:21,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:21,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:21,538 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) [2021-11-16 23:49:23,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:49:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:49:25,695 INFO L93 Difference]: Finished difference Result 3995 states and 6578 transitions. [2021-11-16 23:49:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:49:25,698 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 [2021-11-16 23:49:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:49:25,732 INFO L225 Difference]: With dead ends: 3995 [2021-11-16 23:49:25,732 INFO L226 Difference]: Without dead ends: 2701 [2021-11-16 23:49:25,749 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 [2021-11-16 23:49:25,753 INFO L933 BasicCegarLoop]: 2242 mSDtfsCounter, 2240 mSDsluCounter, 3437 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 682 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-16 23:49:25,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2400 Valid, 5679 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 646 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-11-16 23:49:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-11-16 23:49:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2534. [2021-11-16 23:49:25,917 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) [2021-11-16 23:49:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3875 transitions. [2021-11-16 23:49:25,933 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3875 transitions. Word has length 36 [2021-11-16 23:49:25,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:49:25,933 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 3875 transitions. [2021-11-16 23:49:25,934 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) [2021-11-16 23:49:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3875 transitions. [2021-11-16 23:49:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-16 23:49:25,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:25,936 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] [2021-11-16 23:49:25,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 23:49:25,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1794039467, now seen corresponding path program 1 times [2021-11-16 23:49:25,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:25,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392471088] [2021-11-16 23:49:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:25,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 23:49:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:26,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:26,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392471088] [2021-11-16 23:49:26,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392471088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:26,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:26,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:26,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859701652] [2021-11-16 23:49:26,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:26,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:26,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:26,297 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) [2021-11-16 23:49:28,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:49:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:49:30,080 INFO L93 Difference]: Finished difference Result 7872 states and 12229 transitions. [2021-11-16 23:49:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:49:30,081 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 [2021-11-16 23:49:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:49:30,122 INFO L225 Difference]: With dead ends: 7872 [2021-11-16 23:49:30,123 INFO L226 Difference]: Without dead ends: 5341 [2021-11-16 23:49:30,137 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 [2021-11-16 23:49:30,138 INFO L933 BasicCegarLoop]: 2228 mSDtfsCounter, 2234 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 701 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-16 23:49:30,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2409 Valid, 5561 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 646 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-16 23:49:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-11-16 23:49:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5026. [2021-11-16 23:49:30,300 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) [2021-11-16 23:49:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7689 transitions. [2021-11-16 23:49:30,318 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7689 transitions. Word has length 38 [2021-11-16 23:49:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:49:30,318 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 7689 transitions. [2021-11-16 23:49:30,319 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) [2021-11-16 23:49:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7689 transitions. [2021-11-16 23:49:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-16 23:49:30,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:30,321 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] [2021-11-16 23:49:30,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-16 23:49:30,322 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:30,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:30,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1767320045, now seen corresponding path program 1 times [2021-11-16 23:49:30,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:30,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296577814] [2021-11-16 23:49:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:30,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:49:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:30,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:30,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296577814] [2021-11-16 23:49:30,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296577814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:30,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:30,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:30,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656095155] [2021-11-16 23:49:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:30,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:30,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:30,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:30,592 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) [2021-11-16 23:49:32,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:49:34,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:49:34,368 INFO L93 Difference]: Finished difference Result 15564 states and 24181 transitions. [2021-11-16 23:49:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:49:34,369 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 [2021-11-16 23:49:34,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:49:34,422 INFO L225 Difference]: With dead ends: 15564 [2021-11-16 23:49:34,423 INFO L226 Difference]: Without dead ends: 10541 [2021-11-16 23:49:34,449 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 [2021-11-16 23:49:34,452 INFO L933 BasicCegarLoop]: 2399 mSDtfsCounter, 2107 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 668 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 5712 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-16 23:49:34,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2262 Valid, 5712 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 641 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-16 23:49:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-11-16 23:49:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 9930. [2021-11-16 23:49:34,789 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) [2021-11-16 23:49:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 15189 transitions. [2021-11-16 23:49:34,830 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 15189 transitions. Word has length 39 [2021-11-16 23:49:34,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:49:34,831 INFO L470 AbstractCegarLoop]: Abstraction has 9930 states and 15189 transitions. [2021-11-16 23:49:34,831 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) [2021-11-16 23:49:34,832 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 15189 transitions. [2021-11-16 23:49:34,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-16 23:49:34,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:34,834 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] [2021-11-16 23:49:34,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-16 23:49:34,834 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1333303287, now seen corresponding path program 1 times [2021-11-16 23:49:34,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:34,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736890413] [2021-11-16 23:49:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:34,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-16 23:49:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:35,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:35,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736890413] [2021-11-16 23:49:35,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736890413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:35,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:35,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:35,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550962984] [2021-11-16 23:49:35,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:35,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:35,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:35,113 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) [2021-11-16 23:49:37,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:49:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:49:39,133 INFO L93 Difference]: Finished difference Result 30888 states and 47985 transitions. [2021-11-16 23:49:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:49:39,134 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 [2021-11-16 23:49:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:49:39,228 INFO L225 Difference]: With dead ends: 30888 [2021-11-16 23:49:39,228 INFO L226 Difference]: Without dead ends: 20961 [2021-11-16 23:49:39,269 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 [2021-11-16 23:49:39,273 INFO L933 BasicCegarLoop]: 2423 mSDtfsCounter, 2169 mSDsluCounter, 3396 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 662 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 5819 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-16 23:49:39,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2344 Valid, 5819 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 651 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-16 23:49:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2021-11-16 23:49:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 19758. [2021-11-16 23:49:39,855 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) [2021-11-16 23:49:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19758 states to 19758 states and 30209 transitions. [2021-11-16 23:49:39,933 INFO L78 Accepts]: Start accepts. Automaton has 19758 states and 30209 transitions. Word has length 35 [2021-11-16 23:49:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:49:39,934 INFO L470 AbstractCegarLoop]: Abstraction has 19758 states and 30209 transitions. [2021-11-16 23:49:39,934 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) [2021-11-16 23:49:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 19758 states and 30209 transitions. [2021-11-16 23:49:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-16 23:49:39,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:39,936 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] [2021-11-16 23:49:39,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-16 23:49:39,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:39,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:39,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1420650670, now seen corresponding path program 1 times [2021-11-16 23:49:39,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:39,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182581319] [2021-11-16 23:49:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:39,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:40,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 23:49:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:40,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:40,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:40,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:40,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182581319] [2021-11-16 23:49:40,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182581319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:40,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:40,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:40,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590286281] [2021-11-16 23:49:40,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:40,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:40,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:40,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:40,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:40,241 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) [2021-11-16 23:49:42,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:49:46,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:49:46,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:49:46,666 INFO L93 Difference]: Finished difference Result 61204 states and 95037 transitions. [2021-11-16 23:49:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:49:46,667 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 [2021-11-16 23:49:46,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:49:47,062 INFO L225 Difference]: With dead ends: 61204 [2021-11-16 23:49:47,062 INFO L226 Difference]: Without dead ends: 41449 [2021-11-16 23:49:47,177 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 [2021-11-16 23:49:47,178 INFO L933 BasicCegarLoop]: 2519 mSDtfsCounter, 2090 mSDsluCounter, 3383 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 640 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 5902 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-16 23:49:47,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2234 Valid, 5902 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 644 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-11-16 23:49:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41449 states. [2021-11-16 23:49:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41449 to 39062. [2021-11-16 23:49:48,399 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) [2021-11-16 23:49:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39062 states to 39062 states and 59705 transitions. [2021-11-16 23:49:48,530 INFO L78 Accepts]: Start accepts. Automaton has 39062 states and 59705 transitions. Word has length 38 [2021-11-16 23:49:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:49:48,531 INFO L470 AbstractCegarLoop]: Abstraction has 39062 states and 59705 transitions. [2021-11-16 23:49:48,531 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) [2021-11-16 23:49:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 39062 states and 59705 transitions. [2021-11-16 23:49:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-16 23:49:48,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:48,532 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] [2021-11-16 23:49:48,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-16 23:49:48,533 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1307690219, now seen corresponding path program 1 times [2021-11-16 23:49:48,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:48,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680781522] [2021-11-16 23:49:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:48,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-16 23:49:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:48,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:48,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680781522] [2021-11-16 23:49:48,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680781522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:48,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:48,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:48,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787273364] [2021-11-16 23:49:48,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:48,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:48,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:48,888 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) [2021-11-16 23:49:51,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:49:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:49:53,908 INFO L93 Difference]: Finished difference Result 121724 states and 188965 transitions. [2021-11-16 23:49:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:49:53,909 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 [2021-11-16 23:49:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:49:54,453 INFO L225 Difference]: With dead ends: 121724 [2021-11-16 23:49:54,453 INFO L226 Difference]: Without dead ends: 82665 [2021-11-16 23:49:54,671 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 [2021-11-16 23:49:54,671 INFO L933 BasicCegarLoop]: 2440 mSDtfsCounter, 2196 mSDsluCounter, 3447 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 653 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2363 SdHoareTripleChecker+Valid, 5887 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-16 23:49:54,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2363 Valid, 5887 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 651 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-16 23:49:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82665 states. [2021-11-16 23:49:56,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82665 to 77910. [2021-11-16 23:49:56,994 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) [2021-11-16 23:49:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 119033 transitions. [2021-11-16 23:49:57,529 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 119033 transitions. Word has length 36 [2021-11-16 23:49:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:49:57,531 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 119033 transitions. [2021-11-16 23:49:57,531 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) [2021-11-16 23:49:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 119033 transitions. [2021-11-16 23:49:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-16 23:49:57,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:49:57,533 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] [2021-11-16 23:49:57,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-16 23:49:57,533 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:49:57,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:49:57,534 INFO L85 PathProgramCache]: Analyzing trace with hash 978250436, now seen corresponding path program 1 times [2021-11-16 23:49:57,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:49:57,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889116555] [2021-11-16 23:49:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:49:57,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:49:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 23:49:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:49:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:49:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:49:57,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:49:57,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889116555] [2021-11-16 23:49:57,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889116555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:49:57,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:49:57,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:49:57,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176893702] [2021-11-16 23:49:57,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:49:57,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:49:57,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:49:57,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:49:57,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:49:57,699 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) [2021-11-16 23:49:59,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:04,577 INFO L93 Difference]: Finished difference Result 242556 states and 376357 transitions. [2021-11-16 23:50:04,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:04,578 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 [2021-11-16 23:50:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:05,352 INFO L225 Difference]: With dead ends: 242556 [2021-11-16 23:50:05,355 INFO L226 Difference]: Without dead ends: 164649 [2021-11-16 23:50:05,818 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 [2021-11-16 23:50:05,820 INFO L933 BasicCegarLoop]: 2542 mSDtfsCounter, 2106 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 644 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 5924 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:05,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2264 Valid, 5924 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 653 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-16 23:50:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164649 states. [2021-11-16 23:50:10,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164649 to 155158. [2021-11-16 23:50:10,205 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) [2021-11-16 23:50:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155158 states to 155158 states and 236889 transitions. [2021-11-16 23:50:11,329 INFO L78 Accepts]: Start accepts. Automaton has 155158 states and 236889 transitions. Word has length 34 [2021-11-16 23:50:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:11,330 INFO L470 AbstractCegarLoop]: Abstraction has 155158 states and 236889 transitions. [2021-11-16 23:50:11,330 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) [2021-11-16 23:50:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 155158 states and 236889 transitions. [2021-11-16 23:50:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-16 23:50:11,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:11,331 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] [2021-11-16 23:50:11,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-16 23:50:11,332 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1315217039, now seen corresponding path program 1 times [2021-11-16 23:50:11,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:11,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512833608] [2021-11-16 23:50:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:11,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:50:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:11,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:11,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512833608] [2021-11-16 23:50:11,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512833608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:11,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:11,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:11,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287253447] [2021-11-16 23:50:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:11,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:11,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:11,522 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) [2021-11-16 23:50:13,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:21,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:24,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:24,360 INFO L93 Difference]: Finished difference Result 483132 states and 749189 transitions. [2021-11-16 23:50:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:24,361 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, (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 39 [2021-11-16 23:50:24,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:25,966 INFO L225 Difference]: With dead ends: 483132 [2021-11-16 23:50:25,966 INFO L226 Difference]: Without dead ends: 327977 [2021-11-16 23:50:26,712 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 [2021-11-16 23:50:26,713 INFO L933 BasicCegarLoop]: 2858 mSDtfsCounter, 2073 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 574 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 6487 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:26,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2229 Valid, 6487 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 663 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-16 23:50:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327977 states.