./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--w83792d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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--w83792d.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 e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:04:14,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:04:14,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:04:14,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:04:14,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:04:14,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:04:14,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:04:14,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:04:14,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:04:14,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:04:14,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:04:14,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:04:14,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:04:14,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:04:14,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:04:14,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:04:14,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:04:14,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:04:14,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:04:14,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:04:14,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:04:14,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:04:14,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:04:14,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:04:14,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:04:14,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:04:14,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:04:14,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:04:14,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:04:14,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:04:14,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:04:14,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:04:14,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:04:14,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:04:14,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:04:14,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:04:14,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:04:14,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:04:14,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:04:14,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:04:14,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:04:14,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:04:14,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:04:14,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:04:14,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:04:14,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:04:14,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:04:14,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:04:14,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:04:14,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:04:14,938 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:04:14,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:04:14,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:04:14,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:04:14,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:04:14,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:04:14,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:04:14,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:04:14,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:04:14,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:04:14,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:04:14,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:04:14,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:04:14,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:04:14,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:04:14,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:04:14,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:04:14,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:04:14,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:04:14,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:04:14,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:04:14,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:04:14,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:04:14,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2021-12-21 16:04:15,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:04:15,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:04:15,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:04:15,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:04:15,195 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:04:15,196 INFO L432 ainManager$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--w83792d.ko-main.cil.out.i [2021-12-21 16:04:15,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca8751897/cf1bd982ed7f48a39aa522248c32b950/FLAG6bb0fef9c [2021-12-21 16:04:15,831 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:04:15,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-21 16:04:15,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca8751897/cf1bd982ed7f48a39aa522248c32b950/FLAG6bb0fef9c [2021-12-21 16:04:16,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca8751897/cf1bd982ed7f48a39aa522248c32b950 [2021-12-21 16:04:16,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:04:16,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:04:16,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:04:16,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:04:16,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:04:16,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:04:16" (1/1) ... [2021-12-21 16:04:16,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3102002a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:16, skipping insertion in model container [2021-12-21 16:04:16,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:04:16" (1/1) ... [2021-12-21 16:04:16,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:04:16,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:04:17,246 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--w83792d.ko-main.cil.out.i[270348,270361] [2021-12-21 16:04:17,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:04:17,335 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:04:17,572 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--w83792d.ko-main.cil.out.i[270348,270361] [2021-12-21 16:04:17,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:04:17,796 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:04:17,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17 WrapperNode [2021-12-21 16:04:17,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:04:17,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:04:17,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:04:17,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:04:17,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:17,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,090 INFO L137 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9293 [2021-12-21 16:04:18,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:04:18,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:04:18,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:04:18,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:04:18,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:04:18,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:04:18,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:04:18,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:04:18,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (1/1) ... [2021-12-21 16:04:18,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:04:18,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:04:18,363 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) [2021-12-21 16:04:18,397 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 [2021-12-21 16:04:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-21 16:04:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-21 16:04:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-21 16:04:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-21 16:04:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2021-12-21 16:04:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2021-12-21 16:04:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-21 16:04:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-21 16:04:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-21 16:04:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-21 16:04:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:04:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-21 16:04:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-21 16:04:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-21 16:04:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-21 16:04:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-21 16:04:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-21 16:04:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2021-12-21 16:04:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2021-12-21 16:04:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-21 16:04:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-21 16:04:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2021-12-21 16:04:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2021-12-21 16:04:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:04:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:04:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-21 16:04:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-21 16:04:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-21 16:04:18,501 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-21 16:04:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2021-12-21 16:04:18,502 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2021-12-21 16:04:18,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:04:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-21 16:04:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-21 16:04:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2021-12-21 16:04:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2021-12-21 16:04:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2021-12-21 16:04:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-21 16:04:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:04:18,503 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-21 16:04:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2021-12-21 16:04:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2021-12-21 16:04:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-21 16:04:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2021-12-21 16:04:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2021-12-21 16:04:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-21 16:04:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-21 16:04:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2021-12-21 16:04:18,504 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2021-12-21 16:04:18,504 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2021-12-21 16:04:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-21 16:04:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-21 16:04:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2021-12-21 16:04:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2021-12-21 16:04:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-21 16:04:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-21 16:04:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2021-12-21 16:04:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2021-12-21 16:04:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-21 16:04:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-21 16:04:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2021-12-21 16:04:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2021-12-21 16:04:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:04:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2021-12-21 16:04:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2021-12-21 16:04:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:04:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:04:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-21 16:04:18,506 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-21 16:04:19,281 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:04:19,283 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:04:25,739 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:04:25,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:04:25,807 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:04:25,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:04:25 BoogieIcfgContainer [2021-12-21 16:04:25,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:04:25,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:04:25,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:04:25,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:04:25,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:04:16" (1/3) ... [2021-12-21 16:04:25,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8c86cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:04:25, skipping insertion in model container [2021-12-21 16:04:25,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:04:17" (2/3) ... [2021-12-21 16:04:25,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8c86cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:04:25, skipping insertion in model container [2021-12-21 16:04:25,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:04:25" (3/3) ... [2021-12-21 16:04:25,826 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-21 16:04:25,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:04:25,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:04:25,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:04:25,876 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 [2021-12-21 16:04:25,876 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:04:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 2109 states, 1626 states have (on average 1.5412054120541205) internal successors, (2506), 1633 states have internal predecessors, (2506), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2021-12-21 16:04:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-21 16:04:25,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:04:25,930 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] [2021-12-21 16:04:25,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:04:25,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:04:25,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1076657471, now seen corresponding path program 1 times [2021-12-21 16:04:25,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:04:25,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981965312] [2021-12-21 16:04:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:04:25,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:04:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:26,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 16:04:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:04:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:04:26,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:04:26,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981965312] [2021-12-21 16:04:26,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981965312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:04:26,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:04:26,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:04:26,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987669629] [2021-12-21 16:04:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:04:26,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:04:26,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:04:26,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:04:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:04:26,715 INFO L87 Difference]: Start difference. First operand has 2109 states, 1626 states have (on average 1.5412054120541205) internal successors, (2506), 1633 states have internal predecessors, (2506), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:04:28,789 INFO L93 Difference]: Finished difference Result 6329 states and 10651 transitions. [2021-12-21 16:04:28,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:04:28,792 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-21 16:04:28,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:04:28,828 INFO L225 Difference]: With dead ends: 6329 [2021-12-21 16:04:28,828 INFO L226 Difference]: Without dead ends: 4215 [2021-12-21 16:04:28,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:04:28,854 INFO L933 BasicCegarLoop]: 3741 mSDtfsCounter, 3309 mSDsluCounter, 5986 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 9727 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:04:28,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 9727 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 16:04:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-12-21 16:04:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4182. [2021-12-21 16:04:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 3228 states have (on average 1.5412019826517969) internal successors, (4975), 3233 states have internal predecessors, (4975), 853 states have call successors, (853), 101 states have call predecessors, (853), 100 states have return successors, (847), 847 states have call predecessors, (847), 847 states have call successors, (847) [2021-12-21 16:04:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 6675 transitions. [2021-12-21 16:04:29,015 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 6675 transitions. Word has length 32 [2021-12-21 16:04:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:04:29,015 INFO L470 AbstractCegarLoop]: Abstraction has 4182 states and 6675 transitions. [2021-12-21 16:04:29,015 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:29,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 6675 transitions. [2021-12-21 16:04:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-21 16:04:29,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:04:29,018 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] [2021-12-21 16:04:29,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:04:29,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:04:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:04:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1339455529, now seen corresponding path program 1 times [2021-12-21 16:04:29,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:04:29,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253029094] [2021-12-21 16:04:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:04:29,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:04:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:29,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 16:04:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:04:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:04:29,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:04:29,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253029094] [2021-12-21 16:04:29,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253029094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:04:29,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:04:29,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:04:29,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498969974] [2021-12-21 16:04:29,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:04:29,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:04:29,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:04:29,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:04:29,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:04:29,589 INFO L87 Difference]: Start difference. First operand 4182 states and 6675 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:04:31,388 INFO L93 Difference]: Finished difference Result 12564 states and 20115 transitions. [2021-12-21 16:04:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:04:31,388 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-21 16:04:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:04:31,479 INFO L225 Difference]: With dead ends: 12564 [2021-12-21 16:04:31,479 INFO L226 Difference]: Without dead ends: 8385 [2021-12-21 16:04:31,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:04:31,500 INFO L933 BasicCegarLoop]: 3732 mSDtfsCounter, 3304 mSDsluCounter, 5972 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 9704 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:04:31,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3521 Valid, 9704 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 16:04:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8385 states. [2021-12-21 16:04:31,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8385 to 8334. [2021-12-21 16:04:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8334 states, 6435 states have (on average 1.5412587412587413) internal successors, (9918), 6440 states have internal predecessors, (9918), 1698 states have call successors, (1698), 201 states have call predecessors, (1698), 200 states have return successors, (1692), 1692 states have call predecessors, (1692), 1692 states have call successors, (1692) [2021-12-21 16:04:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 13308 transitions. [2021-12-21 16:04:31,723 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 13308 transitions. Word has length 33 [2021-12-21 16:04:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:04:31,724 INFO L470 AbstractCegarLoop]: Abstraction has 8334 states and 13308 transitions. [2021-12-21 16:04:31,724 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 13308 transitions. [2021-12-21 16:04:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 16:04:31,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:04:31,726 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] [2021-12-21 16:04:31,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:04:31,727 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:04:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:04:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1713772628, now seen corresponding path program 1 times [2021-12-21 16:04:31,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:04:31,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413859349] [2021-12-21 16:04:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:04:31,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:04:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:32,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:04:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:04:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:04:32,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:04:32,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413859349] [2021-12-21 16:04:32,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413859349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:04:32,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:04:32,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:04:32,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990079771] [2021-12-21 16:04:32,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:04:32,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:04:32,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:04:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:04:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:04:32,041 INFO L87 Difference]: Start difference. First operand 8334 states and 13308 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:04:33,802 INFO L93 Difference]: Finished difference Result 25028 states and 40082 transitions. [2021-12-21 16:04:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:04:33,803 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2021-12-21 16:04:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:04:33,897 INFO L225 Difference]: With dead ends: 25028 [2021-12-21 16:04:33,897 INFO L226 Difference]: Without dead ends: 16697 [2021-12-21 16:04:33,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:04:33,947 INFO L933 BasicCegarLoop]: 3741 mSDtfsCounter, 3294 mSDsluCounter, 5977 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 9718 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:04:33,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 9718 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 16:04:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16697 states. [2021-12-21 16:04:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16697 to 16610. [2021-12-21 16:04:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16610 states, 12827 states have (on average 1.540968270055352) internal successors, (19766), 12832 states have internal predecessors, (19766), 3382 states have call successors, (3382), 401 states have call predecessors, (3382), 400 states have return successors, (3376), 3376 states have call predecessors, (3376), 3376 states have call successors, (3376) [2021-12-21 16:04:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 26524 transitions. [2021-12-21 16:04:34,469 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 26524 transitions. Word has length 37 [2021-12-21 16:04:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:04:34,469 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 26524 transitions. [2021-12-21 16:04:34,470 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:34,470 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 26524 transitions. [2021-12-21 16:04:34,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-21 16:04:34,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:04:34,472 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] [2021-12-21 16:04:34,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:04:34,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:04:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:04:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash -400868763, now seen corresponding path program 1 times [2021-12-21 16:04:34,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:04:34,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174659712] [2021-12-21 16:04:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:04:34,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:04:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 16:04:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:04:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:04:34,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:04:34,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174659712] [2021-12-21 16:04:34,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174659712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:04:34,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:04:34,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:04:34,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032149121] [2021-12-21 16:04:34,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:04:34,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:04:34,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:04:34,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:04:34,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:04:34,918 INFO L87 Difference]: Start difference. First operand 16610 states and 26524 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:04:37,105 INFO L93 Difference]: Finished difference Result 49920 states and 79950 transitions. [2021-12-21 16:04:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:04:37,105 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-21 16:04:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:04:37,265 INFO L225 Difference]: With dead ends: 49920 [2021-12-21 16:04:37,266 INFO L226 Difference]: Without dead ends: 33313 [2021-12-21 16:04:37,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:04:37,337 INFO L933 BasicCegarLoop]: 3772 mSDtfsCounter, 3303 mSDsluCounter, 6024 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 9796 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:04:37,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3521 Valid, 9796 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 16:04:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33313 states. [2021-12-21 16:04:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33313 to 33154. [2021-12-21 16:04:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33154 states, 25603 states have (on average 1.540678826699996) internal successors, (39446), 25608 states have internal predecessors, (39446), 6750 states have call successors, (6750), 801 states have call predecessors, (6750), 800 states have return successors, (6744), 6744 states have call predecessors, (6744), 6744 states have call successors, (6744) [2021-12-21 16:04:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33154 states to 33154 states and 52940 transitions. [2021-12-21 16:04:38,584 INFO L78 Accepts]: Start accepts. Automaton has 33154 states and 52940 transitions. Word has length 34 [2021-12-21 16:04:38,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:04:38,584 INFO L470 AbstractCegarLoop]: Abstraction has 33154 states and 52940 transitions. [2021-12-21 16:04:38,585 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 33154 states and 52940 transitions. [2021-12-21 16:04:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 16:04:38,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:04:38,586 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] [2021-12-21 16:04:38,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:04:38,586 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:04:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:04:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1596138175, now seen corresponding path program 1 times [2021-12-21 16:04:38,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:04:38,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105756480] [2021-12-21 16:04:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:04:38,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:04:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 16:04:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:04:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:04:38,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:04:38,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105756480] [2021-12-21 16:04:38,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105756480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:04:38,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:04:38,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:04:38,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452294637] [2021-12-21 16:04:38,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:04:38,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:04:38,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:04:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:04:38,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:04:38,970 INFO L87 Difference]: Start difference. First operand 33154 states and 52940 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:04:41,923 INFO L93 Difference]: Finished difference Result 99584 states and 159470 transitions. [2021-12-21 16:04:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:04:41,924 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-12-21 16:04:41,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:04:42,445 INFO L225 Difference]: With dead ends: 99584 [2021-12-21 16:04:42,446 INFO L226 Difference]: Without dead ends: 66433 [2021-12-21 16:04:42,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:04:42,561 INFO L933 BasicCegarLoop]: 3780 mSDtfsCounter, 3295 mSDsluCounter, 6012 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 9792 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:04:42,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3498 Valid, 9792 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 16:04:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66433 states. [2021-12-21 16:04:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66433 to 66130. [2021-12-21 16:04:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66130 states, 51067 states have (on average 1.5402118785125423) internal successors, (78654), 51072 states have internal predecessors, (78654), 13462 states have call successors, (13462), 1601 states have call predecessors, (13462), 1600 states have return successors, (13456), 13456 states have call predecessors, (13456), 13456 states have call successors, (13456) [2021-12-21 16:04:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66130 states to 66130 states and 105572 transitions. [2021-12-21 16:04:44,995 INFO L78 Accepts]: Start accepts. Automaton has 66130 states and 105572 transitions. Word has length 36 [2021-12-21 16:04:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:04:44,996 INFO L470 AbstractCegarLoop]: Abstraction has 66130 states and 105572 transitions. [2021-12-21 16:04:44,996 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:44,996 INFO L276 IsEmpty]: Start isEmpty. Operand 66130 states and 105572 transitions. [2021-12-21 16:04:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 16:04:44,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:04:44,998 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] [2021-12-21 16:04:44,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:04:44,998 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:04:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:04:44,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2140018186, now seen corresponding path program 1 times [2021-12-21 16:04:44,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:04:44,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890412010] [2021-12-21 16:04:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:04:44,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:04:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:04:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:45,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:04:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:04:45,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:04:45,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890412010] [2021-12-21 16:04:45,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890412010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:04:45,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:04:45,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:04:45,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103590902] [2021-12-21 16:04:45,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:04:45,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:04:45,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:04:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:04:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:04:45,313 INFO L87 Difference]: Start difference. First operand 66130 states and 105572 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:49,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:04:49,147 INFO L93 Difference]: Finished difference Result 198640 states and 318022 transitions. [2021-12-21 16:04:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:04:49,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-21 16:04:49,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:04:50,144 INFO L225 Difference]: With dead ends: 198640 [2021-12-21 16:04:50,145 INFO L226 Difference]: Without dead ends: 132513 [2021-12-21 16:04:50,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:04:50,411 INFO L933 BasicCegarLoop]: 3801 mSDtfsCounter, 3301 mSDsluCounter, 6043 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3518 SdHoareTripleChecker+Valid, 9844 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:04:50,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3518 Valid, 9844 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 16:04:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132513 states. [2021-12-21 16:04:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132513 to 131922. [2021-12-21 16:04:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131922 states, 101867 states have (on average 1.5397135480577615) internal successors, (156846), 101872 states have internal predecessors, (156846), 26854 states have call successors, (26854), 3201 states have call predecessors, (26854), 3200 states have return successors, (26848), 26848 states have call predecessors, (26848), 26848 states have call successors, (26848) [2021-12-21 16:04:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131922 states to 131922 states and 210548 transitions. [2021-12-21 16:04:55,022 INFO L78 Accepts]: Start accepts. Automaton has 131922 states and 210548 transitions. Word has length 30 [2021-12-21 16:04:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:04:55,023 INFO L470 AbstractCegarLoop]: Abstraction has 131922 states and 210548 transitions. [2021-12-21 16:04:55,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:04:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 131922 states and 210548 transitions. [2021-12-21 16:04:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-21 16:04:55,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:04:55,024 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] [2021-12-21 16:04:55,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:04:55,024 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:04:55,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:04:55,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2053897929, now seen corresponding path program 1 times [2021-12-21 16:04:55,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:04:55,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005040044] [2021-12-21 16:04:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:04:55,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:04:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 16:04:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:04:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:04:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:04:55,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:04:55,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005040044] [2021-12-21 16:04:55,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005040044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:04:55,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:04:55,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:04:55,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322448592] [2021-12-21 16:04:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:04:55,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:04:55,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:04:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:04:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:04:55,357 INFO L87 Difference]: Start difference. First operand 131922 states and 210548 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 16:05:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:05:01,734 INFO L93 Difference]: Finished difference Result 396272 states and 634262 transitions. [2021-12-21 16:05:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:05:01,734 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-21 16:05:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:05:03,055 INFO L225 Difference]: With dead ends: 396272 [2021-12-21 16:05:03,056 INFO L226 Difference]: Without dead ends: 264353 [2021-12-21 16:05:03,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:05:03,821 INFO L933 BasicCegarLoop]: 3838 mSDtfsCounter, 3289 mSDsluCounter, 6046 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3506 SdHoareTripleChecker+Valid, 9884 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:05:03,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3506 Valid, 9884 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 16:05:04,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264353 states. [2021-12-21 16:05:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264353 to 263186. [2021-12-21 16:05:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263186 states, 203211 states have (on average 1.5391981733272313) internal successors, (312782), 203216 states have internal predecessors, (312782), 53574 states have call successors, (53574), 6401 states have call predecessors, (53574), 6400 states have return successors, (53568), 53568 states have call predecessors, (53568), 53568 states have call successors, (53568)