./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--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 0.2.1-dev-0f8a17c [2021-11-16 23:50:33,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 23:50:33,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 23:50:33,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 23:50:33,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 23:50:33,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 23:50:33,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 23:50:33,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 23:50:33,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 23:50:33,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 23:50:33,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 23:50:33,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 23:50:33,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 23:50:33,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 23:50:33,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 23:50:33,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 23:50:33,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 23:50:33,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 23:50:33,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 23:50:33,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 23:50:33,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 23:50:33,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 23:50:33,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 23:50:33,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 23:50:33,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 23:50:33,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 23:50:33,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 23:50:33,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 23:50:33,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 23:50:33,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 23:50:33,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 23:50:33,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 23:50:33,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 23:50:33,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 23:50:33,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 23:50:33,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 23:50:33,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 23:50:33,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 23:50:33,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 23:50:33,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 23:50:33,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 23:50:33,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 23:50:33,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 23:50:33,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 23:50:33,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 23:50:33,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 23:50:33,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 23:50:33,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 23:50:33,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 23:50:33,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 23:50:33,697 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 23:50:33,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 23:50:33,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 23:50:33,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 23:50:33,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 23:50:33,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 23:50:33,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 23:50:33,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 23:50:33,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 23:50:33,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 23:50:33,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 23:50:33,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 23:50:33,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 23:50:33,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:50:33,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 23:50:33,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 23:50:33,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 23:50:33,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 23:50:33,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 23:50:33,705 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 23:50:33,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 23:50:33,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 23:50:33,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 23:50:33,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2021-11-16 23:50:33,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 23:50:33,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 23:50:33,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 23:50:33,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 23:50:33,953 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 23:50:33,954 INFO L432 ainManager$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 [2021-11-16 23:50:34,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63356d282/96d6a2fbcda74c0da5da413aeb036139/FLAG1748dda66 [2021-11-16 23:50:34,710 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 23:50:34,710 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 [2021-11-16 23:50:34,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63356d282/96d6a2fbcda74c0da5da413aeb036139/FLAG1748dda66 [2021-11-16 23:50:34,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63356d282/96d6a2fbcda74c0da5da413aeb036139 [2021-11-16 23:50:34,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 23:50:34,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 23:50:34,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 23:50:34,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 23:50:34,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 23:50:34,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:34" (1/1) ... [2021-11-16 23:50:34,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3961f2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:34, skipping insertion in model container [2021-11-16 23:50:34,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:34" (1/1) ... [2021-11-16 23:50:34,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 23:50:34,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 23:50:36,033 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] [2021-11-16 23:50:36,092 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:50:36,169 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 23:50:36,462 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] [2021-11-16 23:50:36,477 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:50:36,667 INFO L208 MainTranslator]: Completed translation [2021-11-16 23:50:36,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36 WrapperNode [2021-11-16 23:50:36,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 23:50:36,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 23:50:36,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 23:50:36,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 23:50:36,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:36,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,026 INFO L137 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9158 [2021-11-16 23:50:37,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 23:50:37,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 23:50:37,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 23:50:37,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 23:50:37,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 23:50:37,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 23:50:37,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 23:50:37,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 23:50:37,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (1/1) ... [2021-11-16 23:50:37,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:50:37,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 23:50:37,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 23:50:37,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 23:50:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-11-16 23:50:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-11-16 23:50:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-11-16 23:50:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-11-16 23:50:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2021-11-16 23:50:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2021-11-16 23:50:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-11-16 23:50:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-11-16 23:50:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-11-16 23:50:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-11-16 23:50:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 23:50:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-11-16 23:50:37,478 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-11-16 23:50:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-16 23:50:37,478 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-16 23:50:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-16 23:50:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-16 23:50:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2021-11-16 23:50:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2021-11-16 23:50:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-11-16 23:50:37,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-11-16 23:50:37,479 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2021-11-16 23:50:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2021-11-16 23:50:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-16 23:50:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-16 23:50:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-11-16 23:50:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-11-16 23:50:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-11-16 23:50:37,480 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-11-16 23:50:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-11-16 23:50:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-11-16 23:50:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2021-11-16 23:50:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2021-11-16 23:50:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-11-16 23:50:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-11-16 23:50:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-11-16 23:50:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-11-16 23:50:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2021-11-16 23:50:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2021-11-16 23:50:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2021-11-16 23:50:37,482 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2021-11-16 23:50:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 23:50:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-16 23:50:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-16 23:50:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-16 23:50:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-16 23:50:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2021-11-16 23:50:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2021-11-16 23:50:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-16 23:50:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-16 23:50:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 23:50:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-16 23:50:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-16 23:50:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-11-16 23:50:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-11-16 23:50:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 23:50:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2021-11-16 23:50:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2021-11-16 23:50:37,486 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2021-11-16 23:50:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2021-11-16 23:50:37,487 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2021-11-16 23:50:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2021-11-16 23:50:37,487 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-11-16 23:50:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-11-16 23:50:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 23:50:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-11-16 23:50:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-11-16 23:50:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 23:50:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2021-11-16 23:50:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2021-11-16 23:50:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2021-11-16 23:50:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2021-11-16 23:50:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-11-16 23:50:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-11-16 23:50:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2021-11-16 23:50:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2021-11-16 23:50:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2021-11-16 23:50:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2021-11-16 23:50:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-11-16 23:50:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-11-16 23:50:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-11-16 23:50:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-11-16 23:50:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 23:50:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2021-11-16 23:50:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2021-11-16 23:50:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2021-11-16 23:50:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2021-11-16 23:50:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-11-16 23:50:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-11-16 23:50:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 23:50:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-16 23:50:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-16 23:50:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 23:50:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2021-11-16 23:50:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2021-11-16 23:50:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2021-11-16 23:50:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2021-11-16 23:50:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-11-16 23:50:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-11-16 23:50:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-11-16 23:50:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-11-16 23:50:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2021-11-16 23:50:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2021-11-16 23:50:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-11-16 23:50:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-11-16 23:50:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2021-11-16 23:50:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2021-11-16 23:50:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 23:50:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2021-11-16 23:50:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2021-11-16 23:50:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 23:50:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 23:50:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-16 23:50:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-16 23:50:38,400 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 23:50:38,403 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 23:50:51,659 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 23:50:51,687 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 23:50:51,687 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 23:50:51,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:51 BoogieIcfgContainer [2021-11-16 23:50:51,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 23:50:51,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 23:50:51,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 23:50:51,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 23:50:51,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:50:34" (1/3) ... [2021-11-16 23:50:51,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bf1ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:51, skipping insertion in model container [2021-11-16 23:50:51,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:36" (2/3) ... [2021-11-16 23:50:51,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bf1ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:51, skipping insertion in model container [2021-11-16 23:50:51,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:51" (3/3) ... [2021-11-16 23:50:51,701 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-11-16 23:50:51,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 23:50:51,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 23:50:51,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 23:50:51,760 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 23:50:51,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 23:50:51,812 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) [2021-11-16 23:50:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-16 23:50:51,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:51,820 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] [2021-11-16 23:50:51,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1076657471, now seen corresponding path program 1 times [2021-11-16 23:50:51,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:51,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685765269] [2021-11-16 23:50:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:51,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:52,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-16 23:50:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:52,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:52,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685765269] [2021-11-16 23:50:52,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685765269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:52,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:52,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:52,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649917656] [2021-11-16 23:50:52,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:52,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:52,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:52,915 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) [2021-11-16 23:50:55,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:57,909 INFO L93 Difference]: Finished difference Result 6329 states and 10651 transitions. [2021-11-16 23:50:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:57,913 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 [2021-11-16 23:50:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:57,964 INFO L225 Difference]: With dead ends: 6329 [2021-11-16 23:50:57,964 INFO L226 Difference]: Without dead ends: 4215 [2021-11-16 23:50:57,990 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 [2021-11-16 23:50:57,993 INFO L933 BasicCegarLoop]: 3739 mSDtfsCounter, 3309 mSDsluCounter, 5983 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 933 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9722 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:57,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 9722 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 674 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-16 23:50:58,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-11-16 23:50:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4182. [2021-11-16 23:50:58,179 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) [2021-11-16 23:50:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 6675 transitions. [2021-11-16 23:50:58,210 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 6675 transitions. Word has length 32 [2021-11-16 23:50:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:58,210 INFO L470 AbstractCegarLoop]: Abstraction has 4182 states and 6675 transitions. [2021-11-16 23:50:58,210 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) [2021-11-16 23:50:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 6675 transitions. [2021-11-16 23:50:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-16 23:50:58,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:58,218 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] [2021-11-16 23:50:58,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 23:50:58,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1339455529, now seen corresponding path program 1 times [2021-11-16 23:50:58,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:58,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278052115] [2021-11-16 23:50:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:58,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 23:50:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:58,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:50:58,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:58,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278052115] [2021-11-16 23:50:58,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278052115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:58,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:58,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:58,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959825300] [2021-11-16 23:50:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:58,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:58,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:58,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:58,763 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) [2021-11-16 23:51:00,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:03,648 INFO L93 Difference]: Finished difference Result 12564 states and 20115 transitions. [2021-11-16 23:51:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:03,649 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 [2021-11-16 23:51:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:03,706 INFO L225 Difference]: With dead ends: 12564 [2021-11-16 23:51:03,706 INFO L226 Difference]: Without dead ends: 8385 [2021-11-16 23:51:03,729 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 [2021-11-16 23:51:03,731 INFO L933 BasicCegarLoop]: 3746 mSDtfsCounter, 3304 mSDsluCounter, 6000 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 932 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:03,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3521 Valid, 9746 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 674 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-16 23:51:03,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8385 states. [2021-11-16 23:51:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8385 to 8334. [2021-11-16 23:51:03,991 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) [2021-11-16 23:51:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 13308 transitions. [2021-11-16 23:51:04,022 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 13308 transitions. Word has length 33 [2021-11-16 23:51:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:04,023 INFO L470 AbstractCegarLoop]: Abstraction has 8334 states and 13308 transitions. [2021-11-16 23:51:04,023 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) [2021-11-16 23:51:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 13308 transitions. [2021-11-16 23:51:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-16 23:51:04,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:04,025 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] [2021-11-16 23:51:04,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-16 23:51:04,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1713772628, now seen corresponding path program 1 times [2021-11-16 23:51:04,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:04,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931213407] [2021-11-16 23:51:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:04,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-16 23:51:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:51:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:51:04,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:04,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931213407] [2021-11-16 23:51:04,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931213407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:04,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:04,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:04,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169346155] [2021-11-16 23:51:04,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:04,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:04,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:04,470 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) [2021-11-16 23:51:06,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:09,282 INFO L93 Difference]: Finished difference Result 25028 states and 40082 transitions. [2021-11-16 23:51:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:09,283 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 [2021-11-16 23:51:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:09,391 INFO L225 Difference]: With dead ends: 25028 [2021-11-16 23:51:09,391 INFO L226 Difference]: Without dead ends: 16697 [2021-11-16 23:51:09,438 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 [2021-11-16 23:51:09,442 INFO L933 BasicCegarLoop]: 3740 mSDtfsCounter, 3294 mSDsluCounter, 5975 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 930 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 9715 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:09,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 9715 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 677 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-16 23:51:09,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16697 states. [2021-11-16 23:51:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16697 to 16610. [2021-11-16 23:51:10,153 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) [2021-11-16 23:51:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 26524 transitions. [2021-11-16 23:51:10,216 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 26524 transitions. Word has length 37 [2021-11-16 23:51:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:10,217 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 26524 transitions. [2021-11-16 23:51:10,218 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) [2021-11-16 23:51:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 26524 transitions. [2021-11-16 23:51:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-16 23:51:10,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:10,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:51:10,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-16 23:51:10,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:10,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:10,222 INFO L85 PathProgramCache]: Analyzing trace with hash -400868763, now seen corresponding path program 1 times [2021-11-16 23:51:10,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:10,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882308014] [2021-11-16 23:51:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:10,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:10,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-16 23:51:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:51:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:51:10,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:10,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882308014] [2021-11-16 23:51:10,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882308014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:10,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:10,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:10,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316895561] [2021-11-16 23:51:10,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:10,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:10,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:10,644 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) [2021-11-16 23:51:12,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:15,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:15,485 INFO L93 Difference]: Finished difference Result 49920 states and 79950 transitions. [2021-11-16 23:51:15,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:15,485 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 [2021-11-16 23:51:15,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:15,642 INFO L225 Difference]: With dead ends: 49920 [2021-11-16 23:51:15,642 INFO L226 Difference]: Without dead ends: 33313 [2021-11-16 23:51:15,712 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 [2021-11-16 23:51:15,718 INFO L933 BasicCegarLoop]: 3757 mSDtfsCounter, 3303 mSDsluCounter, 5993 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 929 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 9750 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:15,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 9750 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 674 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-16 23:51:15,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33313 states. [2021-11-16 23:51:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33313 to 33154. [2021-11-16 23:51:16,940 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) [2021-11-16 23:51:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33154 states to 33154 states and 52940 transitions. [2021-11-16 23:51:17,063 INFO L78 Accepts]: Start accepts. Automaton has 33154 states and 52940 transitions. Word has length 34 [2021-11-16 23:51:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:17,063 INFO L470 AbstractCegarLoop]: Abstraction has 33154 states and 52940 transitions. [2021-11-16 23:51:17,064 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) [2021-11-16 23:51:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 33154 states and 52940 transitions. [2021-11-16 23:51:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-16 23:51:17,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:17,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:51:17,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-16 23:51:17,066 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:17,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1596138175, now seen corresponding path program 1 times [2021-11-16 23:51:17,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:17,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105977951] [2021-11-16 23:51:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:17,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 23:51:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:51:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:51:17,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:17,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105977951] [2021-11-16 23:51:17,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105977951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:17,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:17,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:17,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885390950] [2021-11-16 23:51:17,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:17,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:17,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:17,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:17,416 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) [2021-11-16 23:51:19,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:22,848 INFO L93 Difference]: Finished difference Result 99584 states and 159470 transitions. [2021-11-16 23:51:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:22,849 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 [2021-11-16 23:51:22,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:23,390 INFO L225 Difference]: With dead ends: 99584 [2021-11-16 23:51:23,390 INFO L226 Difference]: Without dead ends: 66433 [2021-11-16 23:51:23,540 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 [2021-11-16 23:51:23,541 INFO L933 BasicCegarLoop]: 3781 mSDtfsCounter, 3295 mSDsluCounter, 6028 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 927 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9809 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:23,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 9809 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 677 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-16 23:51:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66433 states. [2021-11-16 23:51:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66433 to 66130. [2021-11-16 23:51:25,813 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) [2021-11-16 23:51:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66130 states to 66130 states and 105572 transitions. [2021-11-16 23:51:26,306 INFO L78 Accepts]: Start accepts. Automaton has 66130 states and 105572 transitions. Word has length 36 [2021-11-16 23:51:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:26,306 INFO L470 AbstractCegarLoop]: Abstraction has 66130 states and 105572 transitions. [2021-11-16 23:51:26,306 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) [2021-11-16 23:51:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 66130 states and 105572 transitions. [2021-11-16 23:51:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-16 23:51:26,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:26,309 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] [2021-11-16 23:51:26,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-16 23:51:26,310 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:26,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2140018186, now seen corresponding path program 1 times [2021-11-16 23:51:26,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:26,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878099091] [2021-11-16 23:51:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:26,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 23:51:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:26,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:51:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:51:26,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:26,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878099091] [2021-11-16 23:51:26,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878099091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:26,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:26,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:26,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421106662] [2021-11-16 23:51:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:26,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:26,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:26,862 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) [2021-11-16 23:51:29,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:32,938 INFO L93 Difference]: Finished difference Result 198640 states and 318022 transitions. [2021-11-16 23:51:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:32,939 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 [2021-11-16 23:51:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:33,848 INFO L225 Difference]: With dead ends: 198640 [2021-11-16 23:51:33,848 INFO L226 Difference]: Without dead ends: 132513 [2021-11-16 23:51:34,026 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 [2021-11-16 23:51:34,027 INFO L933 BasicCegarLoop]: 3802 mSDtfsCounter, 3301 mSDsluCounter, 6045 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 923 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3518 SdHoareTripleChecker+Valid, 9847 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:34,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3518 Valid, 9847 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 678 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-16 23:51:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132513 states. [2021-11-16 23:51:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132513 to 131922. [2021-11-16 23:51:37,528 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) [2021-11-16 23:51:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131922 states to 131922 states and 210548 transitions. [2021-11-16 23:51:38,284 INFO L78 Accepts]: Start accepts. Automaton has 131922 states and 210548 transitions. Word has length 30 [2021-11-16 23:51:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:38,284 INFO L470 AbstractCegarLoop]: Abstraction has 131922 states and 210548 transitions. [2021-11-16 23:51:38,284 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) [2021-11-16 23:51:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 131922 states and 210548 transitions. [2021-11-16 23:51:38,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-16 23:51:38,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:38,287 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] [2021-11-16 23:51:38,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-16 23:51:38,287 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:38,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:38,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2053897929, now seen corresponding path program 1 times [2021-11-16 23:51:38,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:38,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635730068] [2021-11-16 23:51:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:38,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:38,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-16 23:51:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:38,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:51:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:51:38,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:38,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635730068] [2021-11-16 23:51:38,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635730068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:38,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:38,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:38,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802015097] [2021-11-16 23:51:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:38,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:38,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:38,653 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) [2021-11-16 23:51:40,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:47,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:47,420 INFO L93 Difference]: Finished difference Result 396272 states and 634262 transitions. [2021-11-16 23:51:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:47,420 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 [2021-11-16 23:51:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:48,612 INFO L225 Difference]: With dead ends: 396272 [2021-11-16 23:51:48,612 INFO L226 Difference]: Without dead ends: 264353 [2021-11-16 23:51:49,403 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 [2021-11-16 23:51:49,404 INFO L933 BasicCegarLoop]: 3838 mSDtfsCounter, 3289 mSDsluCounter, 6047 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 915 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3507 SdHoareTripleChecker+Valid, 9885 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:49,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3507 Valid, 9885 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 679 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-16 23:51:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264353 states. [2021-11-16 23:51:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264353 to 263186. [2021-11-16 23:51:56,194 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) [2021-11-16 23:51:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263186 states to 263186 states and 419924 transitions. [2021-11-16 23:51:57,617 INFO L78 Accepts]: Start accepts. Automaton has 263186 states and 419924 transitions. Word has length 32 [2021-11-16 23:51:57,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:57,618 INFO L470 AbstractCegarLoop]: Abstraction has 263186 states and 419924 transitions. [2021-11-16 23:51:57,618 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) [2021-11-16 23:51:57,618 INFO L276 IsEmpty]: Start isEmpty. Operand 263186 states and 419924 transitions. [2021-11-16 23:51:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-16 23:51:57,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:57,624 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] [2021-11-16 23:51:57,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-16 23:51:57,625 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:57,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash 393190319, now seen corresponding path program 1 times [2021-11-16 23:51:57,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:57,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704922739] [2021-11-16 23:51:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:57,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:58,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-16 23:51:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:51:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:51:58,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:58,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704922739] [2021-11-16 23:51:58,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704922739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:58,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:58,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:58,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260621165] [2021-11-16 23:51:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:58,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:58,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:58,539 INFO L87 Difference]: Start difference. First operand 263186 states and 419924 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-16 23:52:00,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []