./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 e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:30:16,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:30:16,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:30:17,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:30:17,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:30:17,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:30:17,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:30:17,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:30:17,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:30:17,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:30:17,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:30:17,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:30:17,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:30:17,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:30:17,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:30:17,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:30:17,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:30:17,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:30:17,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:30:17,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:30:17,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:30:17,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:30:17,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:30:17,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:30:17,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:30:17,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:30:17,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:30:17,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:30:17,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:30:17,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:30:17,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:30:17,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:30:17,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:30:17,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:30:17,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:30:17,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:30:17,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:30:17,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:30:17,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:30:17,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:30:17,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:30:17,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:30:17,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:30:17,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:30:17,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:30:17,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:30:17,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:30:17,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:30:17,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:30:17,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:30:17,113 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:30:17,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:30:17,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:30:17,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:30:17,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:30:17,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:30:17,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:30:17,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:30:17,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:30:17,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:30:17,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:30:17,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:30:17,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:30:17,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:17,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:30:17,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:30:17,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:30:17,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:30:17,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:30:17,117 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:30:17,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:30:17,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:30:17,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:30:17,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2021-12-22 14:30:17,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:30:17,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:30:17,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:30:17,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:30:17,384 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:30:17,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-22 14:30:17,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d721bb6a8/af02248082eb4644955b9d36a13b9ad5/FLAG2667926cf [2021-12-22 14:30:18,184 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:30:18,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-22 14:30:18,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d721bb6a8/af02248082eb4644955b9d36a13b9ad5/FLAG2667926cf [2021-12-22 14:30:18,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d721bb6a8/af02248082eb4644955b9d36a13b9ad5 [2021-12-22 14:30:18,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:30:18,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:30:18,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:18,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:30:18,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:30:18,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:18" (1/1) ... [2021-12-22 14:30:18,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5c13e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:18, skipping insertion in model container [2021-12-22 14:30:18,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:18" (1/1) ... [2021-12-22 14:30:18,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:30:18,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:30:19,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2021-12-22 14:30:19,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:30:19,730 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:30:19,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i[168612,168625] [2021-12-22 14:30:19,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:30:20,160 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:30:20,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20 WrapperNode [2021-12-22 14:30:20,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:20,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:30:20,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:30:20,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:30:20,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,425 INFO L137 Inliner]: procedures = 184, calls = 1937, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5079 [2021-12-22 14:30:20,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:30:20,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:30:20,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:30:20,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:30:20,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:30:20,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:30:20,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:30:20,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:30:20,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (1/1) ... [2021-12-22 14:30:20,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:20,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:30:20,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:30:20,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:30:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-22 14:30:20,797 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-22 14:30:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:30:20,798 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:30:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-22 14:30:20,798 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-22 14:30:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-22 14:30:20,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-22 14:30:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-22 14:30:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-22 14:30:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-22 14:30:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-22 14:30:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2021-12-22 14:30:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2021-12-22 14:30:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:30:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2021-12-22 14:30:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2021-12-22 14:30:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-22 14:30:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-22 14:30:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-22 14:30:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-22 14:30:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-22 14:30:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-22 14:30:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2021-12-22 14:30:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2021-12-22 14:30:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2021-12-22 14:30:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2021-12-22 14:30:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:30:20,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:30:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2021-12-22 14:30:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2021-12-22 14:30:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-22 14:30:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-22 14:30:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-22 14:30:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-22 14:30:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-22 14:30:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-22 14:30:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2021-12-22 14:30:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2021-12-22 14:30:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-22 14:30:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-22 14:30:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:30:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:30:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:30:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:30:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:30:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-22 14:30:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-22 14:30:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2021-12-22 14:30:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2021-12-22 14:30:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:30:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:30:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2021-12-22 14:30:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2021-12-22 14:30:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2021-12-22 14:30:20,806 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2021-12-22 14:30:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2021-12-22 14:30:20,807 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2021-12-22 14:30:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2021-12-22 14:30:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2021-12-22 14:30:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:30:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:30:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:30:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-22 14:30:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-22 14:30:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:30:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:30:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2021-12-22 14:30:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2021-12-22 14:30:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-22 14:30:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-22 14:30:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:30:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-22 14:30:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-22 14:30:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-22 14:30:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-22 14:30:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-22 14:30:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-22 14:30:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-22 14:30:20,811 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-22 14:30:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-22 14:30:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-22 14:30:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-22 14:30:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-22 14:30:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:30:20,812 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-22 14:30:20,812 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-22 14:30:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:30:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2021-12-22 14:30:20,813 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2021-12-22 14:30:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-22 14:30:20,813 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-22 14:30:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:30:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-22 14:30:20,813 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-22 14:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2021-12-22 14:30:20,814 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2021-12-22 14:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2021-12-22 14:30:20,814 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2021-12-22 14:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-22 14:30:20,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-22 14:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-22 14:30:20,814 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-22 14:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 14:30:20,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 14:30:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-22 14:30:20,814 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-22 14:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-22 14:30:20,815 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-22 14:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:30:20,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:30:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:30:20,815 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:30:21,444 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:30:21,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:30:25,058 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:30:25,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:30:25,073 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:30:25,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:25 BoogieIcfgContainer [2021-12-22 14:30:25,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:30:25,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:30:25,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:30:25,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:30:25,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:30:18" (1/3) ... [2021-12-22 14:30:25,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224bf240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:25, skipping insertion in model container [2021-12-22 14:30:25,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:20" (2/3) ... [2021-12-22 14:30:25,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224bf240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:25, skipping insertion in model container [2021-12-22 14:30:25,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:25" (3/3) ... [2021-12-22 14:30:25,085 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-22 14:30:25,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:30:25,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:30:25,136 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:30:25,142 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:30:25,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:30:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2021-12-22 14:30:25,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 14:30:25,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:25,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:25,193 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:25,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash -773562485, now seen corresponding path program 1 times [2021-12-22 14:30:25,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:25,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824715803] [2021-12-22 14:30:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:25,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:30:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:26,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:26,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824715803] [2021-12-22 14:30:26,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824715803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:26,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:26,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:26,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308299819] [2021-12-22 14:30:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:26,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:26,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:26,117 INFO L87 Difference]: Start difference. First operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:29,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:30:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:30,504 INFO L93 Difference]: Finished difference Result 3995 states and 6578 transitions. [2021-12-22 14:30:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:30,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-22 14:30:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:30,537 INFO L225 Difference]: With dead ends: 3995 [2021-12-22 14:30:30,538 INFO L226 Difference]: Without dead ends: 2701 [2021-12-22 14:30:30,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:30,559 INFO L933 BasicCegarLoop]: 2317 mSDtfsCounter, 2186 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 657 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:30,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2352 Valid, 5708 Invalid, 1306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [657 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-12-22 14:30:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-12-22 14:30:30,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2534. [2021-12-22 14:30:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 1890 states have (on average 1.4804232804232804) internal successors, (2798), 1906 states have internal predecessors, (2798), 543 states have call successors, (543), 101 states have call predecessors, (543), 100 states have return successors, (534), 530 states have call predecessors, (534), 534 states have call successors, (534) [2021-12-22 14:30:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3875 transitions. [2021-12-22 14:30:30,796 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3875 transitions. Word has length 36 [2021-12-22 14:30:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:30,797 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 3875 transitions. [2021-12-22 14:30:30,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3875 transitions. [2021-12-22 14:30:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 14:30:30,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:30,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:30,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:30:30,806 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:30,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1794039467, now seen corresponding path program 1 times [2021-12-22 14:30:30,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:30,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650700670] [2021-12-22 14:30:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:30,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 14:30:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:31,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:31,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:31,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650700670] [2021-12-22 14:30:31,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650700670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:31,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:31,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:31,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933946914] [2021-12-22 14:30:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:31,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:31,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:31,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:31,138 INFO L87 Difference]: Start difference. First operand 2534 states and 3875 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:33,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:33,252 INFO L93 Difference]: Finished difference Result 7872 states and 12229 transitions. [2021-12-22 14:30:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:33,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-22 14:30:33,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:33,293 INFO L225 Difference]: With dead ends: 7872 [2021-12-22 14:30:33,293 INFO L226 Difference]: Without dead ends: 5341 [2021-12-22 14:30:33,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:33,313 INFO L933 BasicCegarLoop]: 2387 mSDtfsCounter, 2128 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:33,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2292 Valid, 5683 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 14:30:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-12-22 14:30:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5026. [2021-12-22 14:30:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 3752 states have (on average 1.4797441364605544) internal successors, (5552), 3776 states have internal predecessors, (5552), 1073 states have call successors, (1073), 201 states have call predecessors, (1073), 200 states have return successors, (1064), 1056 states have call predecessors, (1064), 1064 states have call successors, (1064) [2021-12-22 14:30:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7689 transitions. [2021-12-22 14:30:33,625 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7689 transitions. Word has length 38 [2021-12-22 14:30:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:33,626 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 7689 transitions. [2021-12-22 14:30:33,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7689 transitions. [2021-12-22 14:30:33,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 14:30:33,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:33,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:33,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:30:33,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1767320045, now seen corresponding path program 1 times [2021-12-22 14:30:33,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:33,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518818861] [2021-12-22 14:30:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:33,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:33,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:33,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518818861] [2021-12-22 14:30:33,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518818861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:33,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:33,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:33,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241559478] [2021-12-22 14:30:33,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:33,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:33,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:33,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:33,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:33,991 INFO L87 Difference]: Start difference. First operand 5026 states and 7689 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:36,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:36,165 INFO L93 Difference]: Finished difference Result 15564 states and 24181 transitions. [2021-12-22 14:30:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:36,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-12-22 14:30:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:36,236 INFO L225 Difference]: With dead ends: 15564 [2021-12-22 14:30:36,237 INFO L226 Difference]: Without dead ends: 10541 [2021-12-22 14:30:36,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:36,270 INFO L933 BasicCegarLoop]: 2257 mSDtfsCounter, 2213 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 5714 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:36,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2379 Valid, 5714 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 14:30:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-12-22 14:30:36,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 9930. [2021-12-22 14:30:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9930 states, 7424 states have (on average 1.4800646551724137) internal successors, (10988), 7464 states have internal predecessors, (10988), 2105 states have call successors, (2105), 401 states have call predecessors, (2105), 400 states have return successors, (2096), 2080 states have call predecessors, (2096), 2096 states have call successors, (2096) [2021-12-22 14:30:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 15189 transitions. [2021-12-22 14:30:36,740 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 15189 transitions. Word has length 39 [2021-12-22 14:30:36,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:36,740 INFO L470 AbstractCegarLoop]: Abstraction has 9930 states and 15189 transitions. [2021-12-22 14:30:36,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:36,741 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 15189 transitions. [2021-12-22 14:30:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 14:30:36,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:36,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:36,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:30:36,743 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:36,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1333303287, now seen corresponding path program 1 times [2021-12-22 14:30:36,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:36,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304060694] [2021-12-22 14:30:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:36,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:30:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:37,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:37,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:37,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304060694] [2021-12-22 14:30:37,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304060694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:37,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:37,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:37,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505018872] [2021-12-22 14:30:37,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:37,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:37,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:37,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:37,019 INFO L87 Difference]: Start difference. First operand 9930 states and 15189 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:40,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:30:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:41,547 INFO L93 Difference]: Finished difference Result 30888 states and 47985 transitions. [2021-12-22 14:30:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:41,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-22 14:30:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:41,656 INFO L225 Difference]: With dead ends: 30888 [2021-12-22 14:30:41,657 INFO L226 Difference]: Without dead ends: 20961 [2021-12-22 14:30:41,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:41,706 INFO L933 BasicCegarLoop]: 2550 mSDtfsCounter, 2122 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 620 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 6041 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:41,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2279 Valid, 6041 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 652 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-22 14:30:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2021-12-22 14:30:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 19758. [2021-12-22 14:30:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19758 states, 14772 states have (on average 1.479014351475765) internal successors, (21848), 14844 states have internal predecessors, (21848), 4185 states have call successors, (4185), 801 states have call predecessors, (4185), 800 states have return successors, (4176), 4144 states have call predecessors, (4176), 4176 states have call successors, (4176) [2021-12-22 14:30:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19758 states to 19758 states and 30209 transitions. [2021-12-22 14:30:42,454 INFO L78 Accepts]: Start accepts. Automaton has 19758 states and 30209 transitions. Word has length 35 [2021-12-22 14:30:42,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:42,455 INFO L470 AbstractCegarLoop]: Abstraction has 19758 states and 30209 transitions. [2021-12-22 14:30:42,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 19758 states and 30209 transitions. [2021-12-22 14:30:42,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 14:30:42,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:42,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:42,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:30:42,457 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:42,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1420650670, now seen corresponding path program 1 times [2021-12-22 14:30:42,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:42,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187727435] [2021-12-22 14:30:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:42,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 14:30:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:42,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:42,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187727435] [2021-12-22 14:30:42,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187727435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:42,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:42,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:42,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583905366] [2021-12-22 14:30:42,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:42,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:42,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:42,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:42,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:42,689 INFO L87 Difference]: Start difference. First operand 19758 states and 30209 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:45,287 INFO L93 Difference]: Finished difference Result 61204 states and 95037 transitions. [2021-12-22 14:30:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:45,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-22 14:30:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:45,635 INFO L225 Difference]: With dead ends: 61204 [2021-12-22 14:30:45,635 INFO L226 Difference]: Without dead ends: 41449 [2021-12-22 14:30:45,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:45,711 INFO L933 BasicCegarLoop]: 2503 mSDtfsCounter, 2137 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 6038 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:45,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2290 Valid, 6038 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 14:30:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41449 states. [2021-12-22 14:30:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41449 to 39062. [2021-12-22 14:30:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39062 states, 29244 states have (on average 1.4799617015456161) internal successors, (43280), 29380 states have internal predecessors, (43280), 8217 states have call successors, (8217), 1601 states have call predecessors, (8217), 1600 states have return successors, (8208), 8144 states have call predecessors, (8208), 8208 states have call successors, (8208) [2021-12-22 14:30:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39062 states to 39062 states and 59705 transitions. [2021-12-22 14:30:47,208 INFO L78 Accepts]: Start accepts. Automaton has 39062 states and 59705 transitions. Word has length 38 [2021-12-22 14:30:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:47,208 INFO L470 AbstractCegarLoop]: Abstraction has 39062 states and 59705 transitions. [2021-12-22 14:30:47,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 39062 states and 59705 transitions. [2021-12-22 14:30:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 14:30:47,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:47,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:47,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:30:47,210 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:47,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1307690219, now seen corresponding path program 1 times [2021-12-22 14:30:47,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:47,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825531170] [2021-12-22 14:30:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:47,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-22 14:30:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:47,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:47,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825531170] [2021-12-22 14:30:47,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825531170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:47,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:47,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:47,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480550222] [2021-12-22 14:30:47,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:47,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:47,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:47,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:47,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:47,754 INFO L87 Difference]: Start difference. First operand 39062 states and 59705 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:51,305 INFO L93 Difference]: Finished difference Result 121724 states and 188965 transitions. [2021-12-22 14:30:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:51,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-22 14:30:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:51,895 INFO L225 Difference]: With dead ends: 121724 [2021-12-22 14:30:51,895 INFO L226 Difference]: Without dead ends: 82665 [2021-12-22 14:30:52,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:52,056 INFO L933 BasicCegarLoop]: 2558 mSDtfsCounter, 2119 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:52,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2269 Valid, 5958 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-22 14:30:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82665 states. [2021-12-22 14:30:54,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82665 to 77910. [2021-12-22 14:30:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 58316 states have (on average 1.4791137938130188) internal successors, (86256), 58580 states have internal predecessors, (86256), 16393 states have call successors, (16393), 3201 states have call predecessors, (16393), 3200 states have return successors, (16384), 16256 states have call predecessors, (16384), 16384 states have call successors, (16384) [2021-12-22 14:30:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 119033 transitions. [2021-12-22 14:30:55,078 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 119033 transitions. Word has length 36 [2021-12-22 14:30:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:55,080 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 119033 transitions. [2021-12-22 14:30:55,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:30:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 119033 transitions. [2021-12-22 14:30:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 14:30:55,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:55,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:55,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:30:55,083 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:55,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:55,083 INFO L85 PathProgramCache]: Analyzing trace with hash 978250436, now seen corresponding path program 1 times [2021-12-22 14:30:55,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:55,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060629124] [2021-12-22 14:30:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:55,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:30:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:55,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:55,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060629124] [2021-12-22 14:30:55,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060629124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:55,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:55,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:55,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195373385] [2021-12-22 14:30:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:55,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:55,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:55,327 INFO L87 Difference]: Start difference. First operand 77910 states and 119033 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:31:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:31:00,620 INFO L93 Difference]: Finished difference Result 242556 states and 376357 transitions. [2021-12-22 14:31:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:31:00,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2021-12-22 14:31:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:31:01,817 INFO L225 Difference]: With dead ends: 242556 [2021-12-22 14:31:01,817 INFO L226 Difference]: Without dead ends: 164649 [2021-12-22 14:31:02,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:31:02,143 INFO L933 BasicCegarLoop]: 2444 mSDtfsCounter, 2208 mSDsluCounter, 3523 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 5967 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:31:02,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2376 Valid, 5967 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 14:31:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164649 states. [2021-12-22 14:31:06,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164649 to 155158. [2021-12-22 14:31:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155158 states, 116108 states have (on average 1.4779343369965894) internal successors, (171600), 116628 states have internal predecessors, (171600), 32649 states have call successors, (32649), 6401 states have call predecessors, (32649), 6400 states have return successors, (32640), 32384 states have call predecessors, (32640), 32640 states have call successors, (32640) [2021-12-22 14:31:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155158 states to 155158 states and 236889 transitions. [2021-12-22 14:31:07,603 INFO L78 Accepts]: Start accepts. Automaton has 155158 states and 236889 transitions. Word has length 34 [2021-12-22 14:31:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:31:07,604 INFO L470 AbstractCegarLoop]: Abstraction has 155158 states and 236889 transitions. [2021-12-22 14:31:07,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-22 14:31:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 155158 states and 236889 transitions. [2021-12-22 14:31:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 14:31:07,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:31:07,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:31:07,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:31:07,606 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:31:07,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:31:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1315217039, now seen corresponding path program 1 times [2021-12-22 14:31:07,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:31:07,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747351129] [2021-12-22 14:31:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:31:07,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:31:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:31:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:31:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:31:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:31:07,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:31:07,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747351129] [2021-12-22 14:31:07,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747351129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:31:07,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:31:07,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:31:07,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669191032] [2021-12-22 14:31:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:31:07,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:31:07,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:31:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:31:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:31:07,849 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)