./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 ae007674 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-ae00767 [2021-12-28 03:48:46,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:48:46,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:48:46,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:48:46,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:48:46,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:48:46,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:48:46,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:48:46,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:48:46,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:48:46,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:48:46,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:48:46,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:48:46,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:48:46,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:48:46,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:48:46,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:48:46,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:48:46,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:48:46,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:48:46,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:48:46,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:48:46,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:48:46,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:48:46,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:48:46,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:48:46,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:48:46,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:48:46,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:48:46,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:48:46,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:48:46,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:48:46,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:48:46,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:48:46,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:48:46,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:48:46,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:48:46,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:48:46,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:48:46,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:48:46,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:48:46,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:48:46,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:48:46,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:48:46,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:48:46,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:48:46,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:48:46,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:48:46,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:48:46,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:48:46,841 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:48:46,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:48:46,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:48:46,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:48:46,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:48:46,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:48:46,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:48:46,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:48:46,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:48:46,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:48:46,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:48:46,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:48:46,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:48:46,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:46,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:48:46,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:48:46,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:48:46,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:48:46,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:48:46,844 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:48:46,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:48:46,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:48:46,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2021-12-28 03:48:47,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:48:47,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:48:47,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:48:47,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:48:47,146 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:48:47,147 INFO L432 ainManager$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 [2021-12-28 03:48:47,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072baffec/4df57ddeb5a440e18464adfd38eab1df/FLAGc63d2153a [2021-12-28 03:48:47,942 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:48:47,943 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 [2021-12-28 03:48:47,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072baffec/4df57ddeb5a440e18464adfd38eab1df/FLAGc63d2153a [2021-12-28 03:48:48,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072baffec/4df57ddeb5a440e18464adfd38eab1df [2021-12-28 03:48:48,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:48:48,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:48:48,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:48,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:48:48,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:48:48,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:48" (1/1) ... [2021-12-28 03:48:48,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b45119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:48, skipping insertion in model container [2021-12-28 03:48:48,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:48" (1/1) ... [2021-12-28 03:48:48,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:48:48,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:48:49,306 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] [2021-12-28 03:48:49,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:49,415 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:48:49,613 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] [2021-12-28 03:48:49,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:49,814 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:48:49,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49 WrapperNode [2021-12-28 03:48:49,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:49,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:49,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:48:49,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:48:49,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:49,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,140 INFO L137 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9293 [2021-12-28 03:48:50,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:50,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:48:50,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:48:50,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:48:50,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:48:50,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:48:50,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:48:50,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:48:50,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (1/1) ... [2021-12-28 03:48:50,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:50,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:48:50,460 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) [2021-12-28 03:48:50,509 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 [2021-12-28 03:48:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-28 03:48:50,534 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-28 03:48:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-28 03:48:50,534 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-28 03:48:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2021-12-28 03:48:50,534 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2021-12-28 03:48:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-28 03:48:50,534 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-28 03:48:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-28 03:48:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-28 03:48:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:48:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-28 03:48:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-28 03:48:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-28 03:48:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-28 03:48:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-28 03:48:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-28 03:48:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2021-12-28 03:48:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2021-12-28 03:48:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-28 03:48:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-28 03:48:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2021-12-28 03:48:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2021-12-28 03:48:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:48:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:48:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-28 03:48:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-28 03:48:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-28 03:48:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-28 03:48:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-28 03:48:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-28 03:48:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2021-12-28 03:48:50,538 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2021-12-28 03:48:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-28 03:48:50,538 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-28 03:48:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-28 03:48:50,538 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-28 03:48:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2021-12-28 03:48:50,539 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2021-12-28 03:48:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2021-12-28 03:48:50,539 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2021-12-28 03:48:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:48:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:48:50,540 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:48:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:48:50,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:48:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2021-12-28 03:48:50,540 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2021-12-28 03:48:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:48:50,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:48:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:48:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:48:50,541 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:48:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-28 03:48:50,541 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-28 03:48:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:48:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2021-12-28 03:48:50,542 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2021-12-28 03:48:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2021-12-28 03:48:50,543 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2021-12-28 03:48:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2021-12-28 03:48:50,543 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2021-12-28 03:48:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-28 03:48:50,543 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-28 03:48:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:48:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-28 03:48:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-28 03:48:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:48:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2021-12-28 03:48:50,544 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2021-12-28 03:48:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2021-12-28 03:48:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2021-12-28 03:48:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-28 03:48:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-28 03:48:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2021-12-28 03:48:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2021-12-28 03:48:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2021-12-28 03:48:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2021-12-28 03:48:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-28 03:48:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-28 03:48:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-28 03:48:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-28 03:48:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:48:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2021-12-28 03:48:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2021-12-28 03:48:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2021-12-28 03:48:50,546 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2021-12-28 03:48:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-28 03:48:50,547 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-28 03:48:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:48:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-28 03:48:50,547 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-28 03:48:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:48:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2021-12-28 03:48:50,548 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2021-12-28 03:48:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2021-12-28 03:48:50,548 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2021-12-28 03:48:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-28 03:48:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-28 03:48:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-28 03:48:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-28 03:48:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2021-12-28 03:48:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2021-12-28 03:48:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-28 03:48:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-28 03:48:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2021-12-28 03:48:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2021-12-28 03:48:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:48:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2021-12-28 03:48:50,551 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2021-12-28 03:48:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:48:50,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:48:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 03:48:50,551 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 03:48:51,478 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:48:51,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:48:57,746 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:48:57,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:48:57,758 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:48:57,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:57 BoogieIcfgContainer [2021-12-28 03:48:57,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:48:57,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:48:57,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:48:57,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:48:57,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:48:48" (1/3) ... [2021-12-28 03:48:57,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4d9041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:57, skipping insertion in model container [2021-12-28 03:48:57,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:49" (2/3) ... [2021-12-28 03:48:57,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4d9041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:57, skipping insertion in model container [2021-12-28 03:48:57,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:57" (3/3) ... [2021-12-28 03:48:57,770 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-28 03:48:57,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:48:57,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:48:57,816 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:48:57,827 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 [2021-12-28 03:48:57,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:48:57,856 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) [2021-12-28 03:48:57,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 03:48:57,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:57,862 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] [2021-12-28 03:48:57,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:57,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1076657471, now seen corresponding path program 1 times [2021-12-28 03:48:57,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062869391] [2021-12-28 03:48:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:57,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:48:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:58,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:58,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062869391] [2021-12-28 03:48:58,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062869391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:58,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:58,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:58,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490609107] [2021-12-28 03:48:58,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:58,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:58,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:58,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:58,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:58,579 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) [2021-12-28 03:49:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:00,867 INFO L93 Difference]: Finished difference Result 6329 states and 10651 transitions. [2021-12-28 03:49:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:00,870 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 [2021-12-28 03:49:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:00,895 INFO L225 Difference]: With dead ends: 6329 [2021-12-28 03:49:00,895 INFO L226 Difference]: Without dead ends: 4215 [2021-12-28 03:49:00,915 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 [2021-12-28 03:49:00,918 INFO L933 BasicCegarLoop]: 3754 mSDtfsCounter, 3309 mSDsluCounter, 5814 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9568 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:00,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 9568 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 03:49:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-12-28 03:49:01,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4182. [2021-12-28 03:49:01,058 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) [2021-12-28 03:49:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 6675 transitions. [2021-12-28 03:49:01,080 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 6675 transitions. Word has length 32 [2021-12-28 03:49:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:01,080 INFO L470 AbstractCegarLoop]: Abstraction has 4182 states and 6675 transitions. [2021-12-28 03:49:01,081 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) [2021-12-28 03:49:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 6675 transitions. [2021-12-28 03:49:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-28 03:49:01,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:01,084 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] [2021-12-28 03:49:01,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:49:01,084 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1339455529, now seen corresponding path program 1 times [2021-12-28 03:49:01,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309381535] [2021-12-28 03:49:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:01,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:01,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:49:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:01,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:01,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309381535] [2021-12-28 03:49:01,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309381535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:01,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:01,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:01,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325810107] [2021-12-28 03:49:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:01,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:01,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:01,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:01,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:01,410 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) [2021-12-28 03:49:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:03,460 INFO L93 Difference]: Finished difference Result 12564 states and 20115 transitions. [2021-12-28 03:49:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:03,461 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 [2021-12-28 03:49:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:03,499 INFO L225 Difference]: With dead ends: 12564 [2021-12-28 03:49:03,500 INFO L226 Difference]: Without dead ends: 8385 [2021-12-28 03:49:03,523 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 [2021-12-28 03:49:03,524 INFO L933 BasicCegarLoop]: 3746 mSDtfsCounter, 3304 mSDsluCounter, 5787 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3507 SdHoareTripleChecker+Valid, 9533 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:03,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3507 Valid, 9533 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 03:49:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8385 states. [2021-12-28 03:49:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8385 to 8334. [2021-12-28 03:49:03,961 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) [2021-12-28 03:49:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 13308 transitions. [2021-12-28 03:49:03,995 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 13308 transitions. Word has length 33 [2021-12-28 03:49:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:03,995 INFO L470 AbstractCegarLoop]: Abstraction has 8334 states and 13308 transitions. [2021-12-28 03:49:03,995 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) [2021-12-28 03:49:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 13308 transitions. [2021-12-28 03:49:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-28 03:49:03,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:03,999 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] [2021-12-28 03:49:03,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:49:04,000 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1713772628, now seen corresponding path program 1 times [2021-12-28 03:49:04,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:04,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427077614] [2021-12-28 03:49:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:04,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:49:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:04,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:04,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:04,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427077614] [2021-12-28 03:49:04,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427077614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:04,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:04,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:04,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615654668] [2021-12-28 03:49:04,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:04,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:04,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:04,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:04,333 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) [2021-12-28 03:49:06,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:06,296 INFO L93 Difference]: Finished difference Result 25028 states and 40082 transitions. [2021-12-28 03:49:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:06,296 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 [2021-12-28 03:49:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:06,367 INFO L225 Difference]: With dead ends: 25028 [2021-12-28 03:49:06,368 INFO L226 Difference]: Without dead ends: 16697 [2021-12-28 03:49:06,400 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 [2021-12-28 03:49:06,401 INFO L933 BasicCegarLoop]: 3740 mSDtfsCounter, 3294 mSDsluCounter, 5777 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9517 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:06,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 9517 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 03:49:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16697 states. [2021-12-28 03:49:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16697 to 16610. [2021-12-28 03:49:07,034 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) [2021-12-28 03:49:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 26524 transitions. [2021-12-28 03:49:07,086 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 26524 transitions. Word has length 37 [2021-12-28 03:49:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:07,087 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 26524 transitions. [2021-12-28 03:49:07,088 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) [2021-12-28 03:49:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 26524 transitions. [2021-12-28 03:49:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-28 03:49:07,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:07,091 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] [2021-12-28 03:49:07,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:49:07,091 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash -400868763, now seen corresponding path program 1 times [2021-12-28 03:49:07,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:07,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961482724] [2021-12-28 03:49:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:07,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:49:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:07,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:07,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961482724] [2021-12-28 03:49:07,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961482724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:07,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:07,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:07,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592623286] [2021-12-28 03:49:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:07,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:07,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:07,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:07,446 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) [2021-12-28 03:49:10,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:11,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:11,751 INFO L93 Difference]: Finished difference Result 49920 states and 79950 transitions. [2021-12-28 03:49:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:11,752 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 [2021-12-28 03:49:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:11,878 INFO L225 Difference]: With dead ends: 49920 [2021-12-28 03:49:11,878 INFO L226 Difference]: Without dead ends: 33313 [2021-12-28 03:49:11,932 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 [2021-12-28 03:49:11,938 INFO L933 BasicCegarLoop]: 3786 mSDtfsCounter, 3303 mSDsluCounter, 5838 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 929 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3506 SdHoareTripleChecker+Valid, 9624 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:11,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3506 Valid, 9624 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 873 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-12-28 03:49:11,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33313 states. [2021-12-28 03:49:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33313 to 33154. [2021-12-28 03:49:12,734 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) [2021-12-28 03:49:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33154 states to 33154 states and 52940 transitions. [2021-12-28 03:49:12,827 INFO L78 Accepts]: Start accepts. Automaton has 33154 states and 52940 transitions. Word has length 34 [2021-12-28 03:49:12,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:12,828 INFO L470 AbstractCegarLoop]: Abstraction has 33154 states and 52940 transitions. [2021-12-28 03:49:12,828 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) [2021-12-28 03:49:12,828 INFO L276 IsEmpty]: Start isEmpty. Operand 33154 states and 52940 transitions. [2021-12-28 03:49:12,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 03:49:12,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:12,829 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] [2021-12-28 03:49:12,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:49:12,829 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:12,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:12,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1596138175, now seen corresponding path program 1 times [2021-12-28 03:49:12,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:12,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438541743] [2021-12-28 03:49:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:12,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:49:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:13,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:13,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:13,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438541743] [2021-12-28 03:49:13,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438541743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:13,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:13,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:13,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944983801] [2021-12-28 03:49:13,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:13,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:13,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:13,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:13,390 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) [2021-12-28 03:49:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:16,499 INFO L93 Difference]: Finished difference Result 99584 states and 159470 transitions. [2021-12-28 03:49:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:16,499 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 [2021-12-28 03:49:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:17,030 INFO L225 Difference]: With dead ends: 99584 [2021-12-28 03:49:17,030 INFO L226 Difference]: Without dead ends: 66433 [2021-12-28 03:49:17,227 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 [2021-12-28 03:49:17,227 INFO L933 BasicCegarLoop]: 3781 mSDtfsCounter, 3295 mSDsluCounter, 5814 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 SdHoareTripleChecker+Valid, 9595 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:17,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3497 Valid, 9595 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 03:49:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66433 states. [2021-12-28 03:49:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66433 to 66130. [2021-12-28 03:49:19,290 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) [2021-12-28 03:49:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66130 states to 66130 states and 105572 transitions. [2021-12-28 03:49:19,851 INFO L78 Accepts]: Start accepts. Automaton has 66130 states and 105572 transitions. Word has length 36 [2021-12-28 03:49:19,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:19,852 INFO L470 AbstractCegarLoop]: Abstraction has 66130 states and 105572 transitions. [2021-12-28 03:49:19,852 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) [2021-12-28 03:49:19,852 INFO L276 IsEmpty]: Start isEmpty. Operand 66130 states and 105572 transitions. [2021-12-28 03:49:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-28 03:49:19,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:19,855 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] [2021-12-28 03:49:19,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:49:19,855 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:19,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2140018186, now seen corresponding path program 1 times [2021-12-28 03:49:19,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:19,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76064638] [2021-12-28 03:49:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:19,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:49:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:20,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:20,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76064638] [2021-12-28 03:49:20,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76064638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:20,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:20,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:20,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919772267] [2021-12-28 03:49:20,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:20,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:20,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:20,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:20,293 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) [2021-12-28 03:49:24,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:26,479 INFO L93 Difference]: Finished difference Result 198640 states and 318022 transitions. [2021-12-28 03:49:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:26,480 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 [2021-12-28 03:49:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:27,425 INFO L225 Difference]: With dead ends: 198640 [2021-12-28 03:49:27,425 INFO L226 Difference]: Without dead ends: 132513 [2021-12-28 03:49:27,618 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 [2021-12-28 03:49:27,619 INFO L933 BasicCegarLoop]: 3814 mSDtfsCounter, 3301 mSDsluCounter, 5857 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 923 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3505 SdHoareTripleChecker+Valid, 9671 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:27,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3505 Valid, 9671 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 877 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-12-28 03:49:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132513 states. [2021-12-28 03:49:30,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132513 to 131922. [2021-12-28 03:49:31,113 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) [2021-12-28 03:49:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131922 states to 131922 states and 210548 transitions. [2021-12-28 03:49:31,611 INFO L78 Accepts]: Start accepts. Automaton has 131922 states and 210548 transitions. Word has length 30 [2021-12-28 03:49:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:31,629 INFO L470 AbstractCegarLoop]: Abstraction has 131922 states and 210548 transitions. [2021-12-28 03:49:31,630 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) [2021-12-28 03:49:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 131922 states and 210548 transitions. [2021-12-28 03:49:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 03:49:31,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:31,632 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] [2021-12-28 03:49:31,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:49:31,632 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2053897929, now seen corresponding path program 1 times [2021-12-28 03:49:31,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:31,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830687060] [2021-12-28 03:49:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:31,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:32,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:49:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:32,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:32,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830687060] [2021-12-28 03:49:32,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830687060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:32,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:32,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:32,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853779706] [2021-12-28 03:49:32,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:32,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:32,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:32,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:32,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:32,528 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) [2021-12-28 03:49:38,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:38,671 INFO L93 Difference]: Finished difference Result 396272 states and 634262 transitions. [2021-12-28 03:49:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:38,672 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 [2021-12-28 03:49:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:40,193 INFO L225 Difference]: With dead ends: 396272 [2021-12-28 03:49:40,193 INFO L226 Difference]: Without dead ends: 264353 [2021-12-28 03:49:40,611 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 [2021-12-28 03:49:40,612 INFO L933 BasicCegarLoop]: 3868 mSDtfsCounter, 3289 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3491 SdHoareTripleChecker+Valid, 9760 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:40,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3491 Valid, 9760 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 03:49:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264353 states.