./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:36:26,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:36:26,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:36:26,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:36:26,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:36:26,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:36:26,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:36:26,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:36:26,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:36:26,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:36:26,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:36:26,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:36:26,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:36:26,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:36:26,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:36:26,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:36:26,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:36:26,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:36:26,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:36:26,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:36:26,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:36:26,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:36:26,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:36:26,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:36:26,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:36:26,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:36:26,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:36:26,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:36:26,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:36:26,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:36:26,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:36:26,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:36:26,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:36:26,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:36:26,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:36:26,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:36:26,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:36:26,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:36:26,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:36:26,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:36:26,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:36:26,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:36:26,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:36:26,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:36:26,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:36:26,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:36:26,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:36:26,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:36:26,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:36:26,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:36:26,792 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:36:26,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:36:26,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:36:26,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:36:26,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:36:26,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:36:26,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:36:26,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:36:26,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:36:26,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:36:26,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:36:26,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:36:26,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:36:26,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:36:26,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:36:26,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:36:26,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:36:26,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:36:26,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:36:26,797 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:36:26,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:36:26,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:36:26,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:36:26,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2021-12-14 17:36:27,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:36:27,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:36:27,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:36:27,113 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:36:27,114 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:36:27,115 INFO L432 ainManager$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 [2021-12-14 17:36:27,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343d98fa5/f53b2c784d464c738c1401815c798326/FLAGa558e8f1f [2021-12-14 17:36:27,807 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:36:27,808 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 [2021-12-14 17:36:27,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343d98fa5/f53b2c784d464c738c1401815c798326/FLAGa558e8f1f [2021-12-14 17:36:28,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343d98fa5/f53b2c784d464c738c1401815c798326 [2021-12-14 17:36:28,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:36:28,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:36:28,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:36:28,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:36:28,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:36:28,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:36:28" (1/1) ... [2021-12-14 17:36:28,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c831d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:28, skipping insertion in model container [2021-12-14 17:36:28,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:36:28" (1/1) ... [2021-12-14 17:36:28,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:36:28,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:36:29,184 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] [2021-12-14 17:36:29,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:36:29,301 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:36:29,462 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] [2021-12-14 17:36:29,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:36:29,670 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:36:29,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29 WrapperNode [2021-12-14 17:36:29,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:36:29,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:36:29,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:36:29,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:36:29,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:29,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:29,980 INFO L137 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9293 [2021-12-14 17:36:29,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:36:29,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:36:29,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:36:29,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:36:29,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:29,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:30,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:30,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:30,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:30,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:30,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:30,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:36:30,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:36:30,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:36:30,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:36:30,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (1/1) ... [2021-12-14 17:36:30,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:36:30,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:36:30,305 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) [2021-12-14 17:36:30,311 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 [2021-12-14 17:36:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-14 17:36:30,330 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-14 17:36:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-14 17:36:30,330 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-14 17:36:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2021-12-14 17:36:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2021-12-14 17:36:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-14 17:36:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-14 17:36:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-14 17:36:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-14 17:36:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:36:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-14 17:36:30,331 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-14 17:36:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-14 17:36:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-14 17:36:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-14 17:36:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-14 17:36:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2021-12-14 17:36:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2021-12-14 17:36:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-14 17:36:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-14 17:36:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2021-12-14 17:36:30,332 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2021-12-14 17:36:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:36:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:36:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-14 17:36:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-14 17:36:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-14 17:36:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-14 17:36:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-14 17:36:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-14 17:36:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2021-12-14 17:36:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2021-12-14 17:36:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-14 17:36:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-14 17:36:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-14 17:36:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-14 17:36:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2021-12-14 17:36:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2021-12-14 17:36:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2021-12-14 17:36:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2021-12-14 17:36:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:36:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:36:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:36:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:36:30,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:36:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2021-12-14 17:36:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2021-12-14 17:36:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:36:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:36:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:36:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:36:30,336 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:36:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-14 17:36:30,337 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-14 17:36:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:36:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2021-12-14 17:36:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2021-12-14 17:36:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2021-12-14 17:36:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2021-12-14 17:36:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2021-12-14 17:36:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2021-12-14 17:36:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-14 17:36:30,338 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-14 17:36:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:36:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-14 17:36:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-14 17:36:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:36:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2021-12-14 17:36:30,339 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2021-12-14 17:36:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2021-12-14 17:36:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2021-12-14 17:36:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-14 17:36:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-14 17:36:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2021-12-14 17:36:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2021-12-14 17:36:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2021-12-14 17:36:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2021-12-14 17:36:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-14 17:36:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-14 17:36:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-14 17:36:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-14 17:36:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:36:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2021-12-14 17:36:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2021-12-14 17:36:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2021-12-14 17:36:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2021-12-14 17:36:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-14 17:36:30,342 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-14 17:36:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:36:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-14 17:36:30,342 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-14 17:36:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:36:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2021-12-14 17:36:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2021-12-14 17:36:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2021-12-14 17:36:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2021-12-14 17:36:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-14 17:36:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-14 17:36:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-14 17:36:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-14 17:36:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2021-12-14 17:36:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2021-12-14 17:36:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-14 17:36:30,344 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-14 17:36:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2021-12-14 17:36:30,345 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2021-12-14 17:36:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:36:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2021-12-14 17:36:30,345 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2021-12-14 17:36:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:36:30,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:36:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:36:30,346 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:36:31,132 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:36:31,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:36:37,624 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:36:37,637 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:36:37,637 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:36:37,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:36:37 BoogieIcfgContainer [2021-12-14 17:36:37,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:36:37,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:36:37,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:36:37,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:36:37,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:36:28" (1/3) ... [2021-12-14 17:36:37,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c657ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:36:37, skipping insertion in model container [2021-12-14 17:36:37,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:29" (2/3) ... [2021-12-14 17:36:37,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c657ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:36:37, skipping insertion in model container [2021-12-14 17:36:37,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:36:37" (3/3) ... [2021-12-14 17:36:37,647 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-14 17:36:37,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:36:37,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:36:37,691 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:36:37,696 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 [2021-12-14 17:36:37,696 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:36:37,752 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) [2021-12-14 17:36:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 17:36:37,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:37,761 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] [2021-12-14 17:36:37,762 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:37,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:37,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1076657471, now seen corresponding path program 1 times [2021-12-14 17:36:37,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:37,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363766750] [2021-12-14 17:36:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:37,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:36:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:38,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:38,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363766750] [2021-12-14 17:36:38,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363766750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:38,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:38,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:38,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623089407] [2021-12-14 17:36:38,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:38,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:38,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:38,493 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) [2021-12-14 17:36:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:40,610 INFO L93 Difference]: Finished difference Result 6329 states and 10651 transitions. [2021-12-14 17:36:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:40,612 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 [2021-12-14 17:36:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:40,664 INFO L225 Difference]: With dead ends: 6329 [2021-12-14 17:36:40,665 INFO L226 Difference]: Without dead ends: 4215 [2021-12-14 17:36:40,690 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 [2021-12-14 17:36:40,694 INFO L933 BasicCegarLoop]: 3741 mSDtfsCounter, 3309 mSDsluCounter, 5986 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 9727 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:40,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 9727 Invalid, 1608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [933 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 17:36:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-12-14 17:36:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4182. [2021-12-14 17:36:40,875 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) [2021-12-14 17:36:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 6675 transitions. [2021-12-14 17:36:40,895 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 6675 transitions. Word has length 32 [2021-12-14 17:36:40,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:40,896 INFO L470 AbstractCegarLoop]: Abstraction has 4182 states and 6675 transitions. [2021-12-14 17:36:40,896 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) [2021-12-14 17:36:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 6675 transitions. [2021-12-14 17:36:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 17:36:40,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:40,899 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] [2021-12-14 17:36:40,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:36:40,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:40,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:40,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1339455529, now seen corresponding path program 1 times [2021-12-14 17:36:40,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:40,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222238162] [2021-12-14 17:36:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:40,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:36:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:41,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:41,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:41,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222238162] [2021-12-14 17:36:41,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222238162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:41,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:41,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:41,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224376100] [2021-12-14 17:36:41,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:41,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:41,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:41,294 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) [2021-12-14 17:36:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:43,307 INFO L93 Difference]: Finished difference Result 12564 states and 20115 transitions. [2021-12-14 17:36:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:43,307 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 [2021-12-14 17:36:43,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:43,349 INFO L225 Difference]: With dead ends: 12564 [2021-12-14 17:36:43,350 INFO L226 Difference]: Without dead ends: 8385 [2021-12-14 17:36:43,367 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 [2021-12-14 17:36:43,368 INFO L933 BasicCegarLoop]: 3745 mSDtfsCounter, 3304 mSDsluCounter, 5984 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3507 SdHoareTripleChecker+Valid, 9729 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:43,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3507 Valid, 9729 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 17:36:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8385 states. [2021-12-14 17:36:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8385 to 8334. [2021-12-14 17:36:43,576 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) [2021-12-14 17:36:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 13308 transitions. [2021-12-14 17:36:43,604 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 13308 transitions. Word has length 33 [2021-12-14 17:36:43,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:43,604 INFO L470 AbstractCegarLoop]: Abstraction has 8334 states and 13308 transitions. [2021-12-14 17:36:43,605 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) [2021-12-14 17:36:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 13308 transitions. [2021-12-14 17:36:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 17:36:43,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:43,608 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] [2021-12-14 17:36:43,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:36:43,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1713772628, now seen corresponding path program 1 times [2021-12-14 17:36:43,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:43,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312235872] [2021-12-14 17:36:43,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:43,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:36:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:44,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:44,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312235872] [2021-12-14 17:36:44,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312235872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:44,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:44,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:44,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568093211] [2021-12-14 17:36:44,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:44,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:44,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:44,092 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) [2021-12-14 17:36:46,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:46,120 INFO L93 Difference]: Finished difference Result 25028 states and 40082 transitions. [2021-12-14 17:36:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:46,121 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 [2021-12-14 17:36:46,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:46,201 INFO L225 Difference]: With dead ends: 25028 [2021-12-14 17:36:46,201 INFO L226 Difference]: Without dead ends: 16697 [2021-12-14 17:36:46,240 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 [2021-12-14 17:36:46,241 INFO L933 BasicCegarLoop]: 3756 mSDtfsCounter, 3294 mSDsluCounter, 6007 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 9763 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:46,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 9763 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 17:36:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16697 states. [2021-12-14 17:36:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16697 to 16610. [2021-12-14 17:36:46,736 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) [2021-12-14 17:36:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 26524 transitions. [2021-12-14 17:36:46,782 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 26524 transitions. Word has length 37 [2021-12-14 17:36:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:46,782 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 26524 transitions. [2021-12-14 17:36:46,783 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) [2021-12-14 17:36:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 26524 transitions. [2021-12-14 17:36:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 17:36:46,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:46,784 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] [2021-12-14 17:36:46,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:36:46,785 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:46,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:46,785 INFO L85 PathProgramCache]: Analyzing trace with hash -400868763, now seen corresponding path program 1 times [2021-12-14 17:36:46,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:46,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568388799] [2021-12-14 17:36:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:46,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:36:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:47,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:47,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568388799] [2021-12-14 17:36:47,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568388799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:47,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:47,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:47,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980952791] [2021-12-14 17:36:47,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:47,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:47,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:47,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:47,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:47,081 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) [2021-12-14 17:36:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:49,117 INFO L93 Difference]: Finished difference Result 49920 states and 79950 transitions. [2021-12-14 17:36:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:49,117 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 [2021-12-14 17:36:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:49,430 INFO L225 Difference]: With dead ends: 49920 [2021-12-14 17:36:49,439 INFO L226 Difference]: Without dead ends: 33313 [2021-12-14 17:36:49,481 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 [2021-12-14 17:36:49,487 INFO L933 BasicCegarLoop]: 3771 mSDtfsCounter, 3303 mSDsluCounter, 6007 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3506 SdHoareTripleChecker+Valid, 9778 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:49,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3506 Valid, 9778 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 17:36:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33313 states. [2021-12-14 17:36:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33313 to 33154. [2021-12-14 17:36:50,555 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) [2021-12-14 17:36:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33154 states to 33154 states and 52940 transitions. [2021-12-14 17:36:50,653 INFO L78 Accepts]: Start accepts. Automaton has 33154 states and 52940 transitions. Word has length 34 [2021-12-14 17:36:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:50,653 INFO L470 AbstractCegarLoop]: Abstraction has 33154 states and 52940 transitions. [2021-12-14 17:36:50,654 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) [2021-12-14 17:36:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 33154 states and 52940 transitions. [2021-12-14 17:36:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:36:50,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:50,655 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] [2021-12-14 17:36:50,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:36:50,655 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:50,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1596138175, now seen corresponding path program 1 times [2021-12-14 17:36:50,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:50,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642726741] [2021-12-14 17:36:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:50,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 17:36:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:51,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:51,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642726741] [2021-12-14 17:36:51,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642726741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:51,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:51,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:51,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48220553] [2021-12-14 17:36:51,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:51,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:51,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:51,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:51,083 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) [2021-12-14 17:36:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:53,823 INFO L93 Difference]: Finished difference Result 99584 states and 159470 transitions. [2021-12-14 17:36:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:53,824 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 [2021-12-14 17:36:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:54,157 INFO L225 Difference]: With dead ends: 99584 [2021-12-14 17:36:54,157 INFO L226 Difference]: Without dead ends: 66433 [2021-12-14 17:36:54,399 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 [2021-12-14 17:36:54,400 INFO L933 BasicCegarLoop]: 3796 mSDtfsCounter, 3295 mSDsluCounter, 6044 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 9840 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 [2021-12-14 17:36:54,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3498 Valid, 9840 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 17:36:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66433 states. [2021-12-14 17:36:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66433 to 66130. [2021-12-14 17:36:56,192 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) [2021-12-14 17:36:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66130 states to 66130 states and 105572 transitions. [2021-12-14 17:36:56,404 INFO L78 Accepts]: Start accepts. Automaton has 66130 states and 105572 transitions. Word has length 36 [2021-12-14 17:36:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:56,405 INFO L470 AbstractCegarLoop]: Abstraction has 66130 states and 105572 transitions. [2021-12-14 17:36:56,405 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) [2021-12-14 17:36:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 66130 states and 105572 transitions. [2021-12-14 17:36:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-14 17:36:56,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:56,408 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] [2021-12-14 17:36:56,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:36:56,408 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2140018186, now seen corresponding path program 1 times [2021-12-14 17:36:56,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:56,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052286076] [2021-12-14 17:36:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:56,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:36:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:56,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:56,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:56,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052286076] [2021-12-14 17:36:56,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052286076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:56,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:56,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:56,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8309583] [2021-12-14 17:36:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:56,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:56,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:56,908 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) [2021-12-14 17:37:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:00,885 INFO L93 Difference]: Finished difference Result 198640 states and 318022 transitions. [2021-12-14 17:37:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:37:00,886 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 [2021-12-14 17:37:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:01,672 INFO L225 Difference]: With dead ends: 198640 [2021-12-14 17:37:01,672 INFO L226 Difference]: Without dead ends: 132513 [2021-12-14 17:37:01,947 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 [2021-12-14 17:37:01,947 INFO L933 BasicCegarLoop]: 3815 mSDtfsCounter, 3301 mSDsluCounter, 6057 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3504 SdHoareTripleChecker+Valid, 9872 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:01,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3504 Valid, 9872 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 17:37:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132513 states. [2021-12-14 17:37:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132513 to 131922. [2021-12-14 17:37:05,433 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) [2021-12-14 17:37:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131922 states to 131922 states and 210548 transitions. [2021-12-14 17:37:06,236 INFO L78 Accepts]: Start accepts. Automaton has 131922 states and 210548 transitions. Word has length 30 [2021-12-14 17:37:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:37:06,238 INFO L470 AbstractCegarLoop]: Abstraction has 131922 states and 210548 transitions. [2021-12-14 17:37:06,238 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) [2021-12-14 17:37:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 131922 states and 210548 transitions. [2021-12-14 17:37:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 17:37:06,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:37:06,240 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] [2021-12-14 17:37:06,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:37:06,240 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:37:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:37:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2053897929, now seen corresponding path program 1 times [2021-12-14 17:37:06,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:37:06,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766615335] [2021-12-14 17:37:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:37:06,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:37:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:37:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:37:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:37:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:37:06,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:37:06,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766615335] [2021-12-14 17:37:06,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766615335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:37:06,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:37:06,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:37:06,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138346915] [2021-12-14 17:37:06,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:37:06,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:37:06,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:37:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:37:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:37:06,511 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) [2021-12-14 17:37:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:37:13,099 INFO L93 Difference]: Finished difference Result 396272 states and 634262 transitions. [2021-12-14 17:37:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:37:13,100 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 [2021-12-14 17:37:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:37:14,942 INFO L225 Difference]: With dead ends: 396272 [2021-12-14 17:37:14,942 INFO L226 Difference]: Without dead ends: 264353 [2021-12-14 17:37:15,439 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 [2021-12-14 17:37:15,440 INFO L933 BasicCegarLoop]: 3838 mSDtfsCounter, 3289 mSDsluCounter, 6046 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:37:15,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3506 Valid, 9884 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 17:37:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264353 states. [2021-12-14 17:37:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264353 to 263186. [2021-12-14 17:37:23,087 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) [2021-12-14 17:37:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263186 states to 263186 states and 419924 transitions.