./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--w83781d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.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 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:48:34,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:48:34,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:48:35,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:48:35,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:48:35,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:48:35,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:48:35,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:48:35,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:48:35,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:48:35,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:48:35,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:48:35,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:48:35,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:48:35,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:48:35,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:48:35,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:48:35,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:48:35,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:48:35,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:48:35,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:48:35,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:48:35,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:48:35,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:48:35,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:48:35,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:48:35,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:48:35,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:48:35,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:48:35,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:48:35,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:48:35,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:48:35,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:48:35,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:48:35,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:48:35,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:48:35,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:48:35,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:48:35,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:48:35,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:48:35,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:48:35,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:48:35,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:48:35,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:48:35,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:48:35,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:48:35,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:48:35,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:48:35,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:48:35,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:48:35,129 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:48:35,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:48:35,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:48:35,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:48:35,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:48:35,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:48:35,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:48:35,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:48:35,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:48:35,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:48:35,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:48:35,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:48:35,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:48:35,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:35,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:48:35,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:48:35,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:48:35,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:48:35,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:48:35,133 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:48:35,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:48:35,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:48:35,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2021-12-28 03:48:35,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:48:35,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:48:35,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:48:35,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:48:35,467 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:48:35,468 INFO L432 ainManager$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--w83781d.ko-main.cil.out.i [2021-12-28 03:48:35,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84996b7db/40193546218846dc82baab061798946c/FLAGd17ff718b [2021-12-28 03:48:36,349 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:48:36,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-28 03:48:36,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84996b7db/40193546218846dc82baab061798946c/FLAGd17ff718b [2021-12-28 03:48:36,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84996b7db/40193546218846dc82baab061798946c [2021-12-28 03:48:36,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:48:36,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:48:36,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:36,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:48:36,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:48:36,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:36" (1/1) ... [2021-12-28 03:48:36,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f5145e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:36, skipping insertion in model container [2021-12-28 03:48:36,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:36" (1/1) ... [2021-12-28 03:48:36,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:48:36,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:48:38,013 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--w83781d.ko-main.cil.out.i[231089,231102] [2021-12-28 03:48:38,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:38,246 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:48:38,545 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--w83781d.ko-main.cil.out.i[231089,231102] [2021-12-28 03:48:38,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:38,856 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:48:38,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38 WrapperNode [2021-12-28 03:48:38,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:38,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:38,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:48:38,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:48:38,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:38,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,194 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7883 [2021-12-28 03:48:39,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:39,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:48:39,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:48:39,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:48:39,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:48:39,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:48:39,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:48:39,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:48:39,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (1/1) ... [2021-12-28 03:48:39,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:39,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:48:39,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:48:39,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:48:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2021-12-28 03:48:39,621 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2021-12-28 03:48:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-28 03:48:39,621 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-28 03:48:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2021-12-28 03:48:39,621 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2021-12-28 03:48:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-28 03:48:39,622 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-28 03:48:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2021-12-28 03:48:39,622 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2021-12-28 03:48:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:48:39,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:48:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-28 03:48:39,623 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-28 03:48:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-28 03:48:39,623 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-28 03:48:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-28 03:48:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-28 03:48:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2021-12-28 03:48:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2021-12-28 03:48:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:48:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:48:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:48:39,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:48:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-28 03:48:39,625 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-28 03:48:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2021-12-28 03:48:39,625 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2021-12-28 03:48:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:48:39,626 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:48:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-28 03:48:39,626 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-28 03:48:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:48:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2021-12-28 03:48:39,627 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2021-12-28 03:48:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-28 03:48:39,627 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-28 03:48:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-28 03:48:39,628 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-28 03:48:39,628 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-28 03:48:39,628 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-28 03:48:39,628 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2021-12-28 03:48:39,629 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2021-12-28 03:48:39,629 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-28 03:48:39,629 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-28 03:48:39,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:48:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2021-12-28 03:48:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2021-12-28 03:48:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-28 03:48:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-28 03:48:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:48:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:48:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-28 03:48:39,631 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-28 03:48:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-28 03:48:39,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-28 03:48:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-28 03:48:39,632 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-28 03:48:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-28 03:48:39,633 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-28 03:48:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 03:48:39,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 03:48:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2021-12-28 03:48:39,634 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2021-12-28 03:48:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2021-12-28 03:48:39,634 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2021-12-28 03:48:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2021-12-28 03:48:39,635 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2021-12-28 03:48:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-28 03:48:39,635 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-28 03:48:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 03:48:39,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 03:48:39,636 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-28 03:48:39,636 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-28 03:48:39,636 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-28 03:48:39,637 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-28 03:48:39,637 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-28 03:48:39,637 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-28 03:48:39,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-12-28 03:48:39,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-12-28 03:48:39,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:48:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-28 03:48:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-28 03:48:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-28 03:48:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-28 03:48:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-28 03:48:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-28 03:48:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-28 03:48:39,639 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-28 03:48:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-28 03:48:39,639 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-28 03:48:39,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:48:39,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-12-28 03:48:39,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-12-28 03:48:39,640 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-28 03:48:39,641 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-28 03:48:39,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:48:39,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:48:39,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-12-28 03:48:39,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-12-28 03:48:39,642 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2021-12-28 03:48:39,643 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2021-12-28 03:48:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2021-12-28 03:48:39,643 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2021-12-28 03:48:39,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:48:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-28 03:48:39,644 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-28 03:48:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:48:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-28 03:48:39,644 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-28 03:48:39,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:48:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-12-28 03:48:39,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-12-28 03:48:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-28 03:48:39,645 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-28 03:48:39,645 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2021-12-28 03:48:39,646 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2021-12-28 03:48:39,646 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-28 03:48:39,646 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-28 03:48:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:48:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-28 03:48:39,649 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-28 03:48:39,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:48:39,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:48:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 03:48:39,651 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 03:48:40,554 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:48:40,558 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:48:46,325 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:48:46,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:48:46,363 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:48:46,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:46 BoogieIcfgContainer [2021-12-28 03:48:46,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:48:46,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:48:46,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:48:46,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:48:46,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:48:36" (1/3) ... [2021-12-28 03:48:46,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b896a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:46, skipping insertion in model container [2021-12-28 03:48:46,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:38" (2/3) ... [2021-12-28 03:48:46,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b896a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:46, skipping insertion in model container [2021-12-28 03:48:46,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:46" (3/3) ... [2021-12-28 03:48:46,375 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-28 03:48:46,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:48:46,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:48:46,426 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:48:46,432 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:48:46,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:48:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2021-12-28 03:48:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-28 03:48:46,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:46,494 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] [2021-12-28 03:48:46,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1921795242, now seen corresponding path program 1 times [2021-12-28 03:48:46,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:46,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629388169] [2021-12-28 03:48:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:46,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:47,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:48:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:47,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:47,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629388169] [2021-12-28 03:48:47,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629388169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:47,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:47,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:47,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904229554] [2021-12-28 03:48:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:47,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:47,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:47,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:47,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:47,456 INFO L87 Difference]: Start difference. First operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) 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) [2021-12-28 03:48:50,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:52,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:54,928 INFO L93 Difference]: Finished difference Result 5822 states and 9819 transitions. [2021-12-28 03:48:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:54,931 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 31 [2021-12-28 03:48:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:54,972 INFO L225 Difference]: With dead ends: 5822 [2021-12-28 03:48:54,973 INFO L226 Difference]: Without dead ends: 3875 [2021-12-28 03:48:55,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:55,013 INFO L933 BasicCegarLoop]: 3628 mSDtfsCounter, 3029 mSDsluCounter, 5029 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 928 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 8657 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:55,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 8657 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [928 Valid, 1095 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-12-28 03:48:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2021-12-28 03:48:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3839. [2021-12-28 03:48:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 2883 states have (on average 1.5202913631633714) internal successors, (4383), 2894 states have internal predecessors, (4383), 843 states have call successors, (843), 113 states have call predecessors, (843), 112 states have return successors, (834), 833 states have call predecessors, (834), 834 states have call successors, (834) [2021-12-28 03:48:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 6060 transitions. [2021-12-28 03:48:55,282 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 6060 transitions. Word has length 31 [2021-12-28 03:48:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:55,283 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 6060 transitions. [2021-12-28 03:48:55,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-28 03:48:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 6060 transitions. [2021-12-28 03:48:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 03:48:55,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:55,287 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] [2021-12-28 03:48:55,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:48:55,287 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:55,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1987244376, now seen corresponding path program 1 times [2021-12-28 03:48:55,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:55,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067109893] [2021-12-28 03:48:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:55,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:48:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:55,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067109893] [2021-12-28 03:48:55,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067109893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:55,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:55,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:55,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002955179] [2021-12-28 03:48:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:55,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:55,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:55,764 INFO L87 Difference]: Start difference. First operand 3839 states and 6060 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:48:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:58,842 INFO L93 Difference]: Finished difference Result 11531 states and 18262 transitions. [2021-12-28 03:48:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:58,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-28 03:48:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:58,896 INFO L225 Difference]: With dead ends: 11531 [2021-12-28 03:48:58,896 INFO L226 Difference]: Without dead ends: 7695 [2021-12-28 03:48:58,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:58,927 INFO L933 BasicCegarLoop]: 3656 mSDtfsCounter, 3028 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 8709 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:58,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3277 Valid, 8709 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [926 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-28 03:48:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2021-12-28 03:48:59,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 7643. [2021-12-28 03:48:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 5743 states have (on average 1.5202855650356957) internal successors, (8731), 5758 states have internal predecessors, (8731), 1675 states have call successors, (1675), 225 states have call predecessors, (1675), 224 states have return successors, (1666), 1663 states have call predecessors, (1666), 1666 states have call successors, (1666) [2021-12-28 03:48:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 12072 transitions. [2021-12-28 03:48:59,232 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 12072 transitions. Word has length 32 [2021-12-28 03:48:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:59,232 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 12072 transitions. [2021-12-28 03:48:59,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:48:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 12072 transitions. [2021-12-28 03:48:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-28 03:48:59,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:59,238 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] [2021-12-28 03:48:59,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:48:59,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:59,239 INFO L85 PathProgramCache]: Analyzing trace with hash -886111828, now seen corresponding path program 1 times [2021-12-28 03:48:59,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:59,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982076495] [2021-12-28 03:48:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:59,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:48:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:59,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:59,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:59,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982076495] [2021-12-28 03:48:59,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982076495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:59,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:59,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:59,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283266491] [2021-12-28 03:48:59,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:59,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:59,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:59,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:59,699 INFO L87 Difference]: Start difference. First operand 7643 states and 12072 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:49:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:02,731 INFO L93 Difference]: Finished difference Result 22963 states and 36386 transitions. [2021-12-28 03:49:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:02,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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 28 [2021-12-28 03:49:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:02,849 INFO L225 Difference]: With dead ends: 22963 [2021-12-28 03:49:02,850 INFO L226 Difference]: Without dead ends: 15323 [2021-12-28 03:49:02,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:49:02,900 INFO L933 BasicCegarLoop]: 3515 mSDtfsCounter, 3069 mSDsluCounter, 4970 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 8485 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:02,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3329 Valid, 8485 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-28 03:49:02,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15323 states. [2021-12-28 03:49:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15323 to 15239. [2021-12-28 03:49:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15239 states, 11453 states have (on average 1.5200384178817776) internal successors, (17409), 11476 states have internal predecessors, (17409), 3337 states have call successors, (3337), 449 states have call predecessors, (3337), 448 states have return successors, (3328), 3321 states have call predecessors, (3328), 3328 states have call successors, (3328) [2021-12-28 03:49:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15239 states to 15239 states and 24074 transitions. [2021-12-28 03:49:03,498 INFO L78 Accepts]: Start accepts. Automaton has 15239 states and 24074 transitions. Word has length 28 [2021-12-28 03:49:03,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:03,499 INFO L470 AbstractCegarLoop]: Abstraction has 15239 states and 24074 transitions. [2021-12-28 03:49:03,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:49:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 15239 states and 24074 transitions. [2021-12-28 03:49:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-28 03:49:03,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:03,500 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] [2021-12-28 03:49:03,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:49:03,501 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash 409562076, now seen corresponding path program 1 times [2021-12-28 03:49:03,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:03,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787079440] [2021-12-28 03:49:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:03,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:49:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:03,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:03,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787079440] [2021-12-28 03:49:03,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787079440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:03,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:03,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:03,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055667679] [2021-12-28 03:49:03,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:03,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:03,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:03,960 INFO L87 Difference]: Start difference. First operand 15239 states and 24074 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:49:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:07,001 INFO L93 Difference]: Finished difference Result 45791 states and 72568 transitions. [2021-12-28 03:49:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 29 [2021-12-28 03:49:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:07,166 INFO L225 Difference]: With dead ends: 45791 [2021-12-28 03:49:07,166 INFO L226 Difference]: Without dead ends: 30555 [2021-12-28 03:49:07,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:49:07,253 INFO L933 BasicCegarLoop]: 3884 mSDtfsCounter, 3044 mSDsluCounter, 5267 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 9151 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:07,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3292 Valid, 9151 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-28 03:49:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30555 states. [2021-12-28 03:49:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30555 to 30407. [2021-12-28 03:49:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30407 states, 22853 states have (on average 1.519669190040695) internal successors, (34729), 22892 states have internal predecessors, (34729), 6657 states have call successors, (6657), 897 states have call predecessors, (6657), 896 states have return successors, (6648), 6633 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-12-28 03:49:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 48034 transitions. [2021-12-28 03:49:08,443 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 48034 transitions. Word has length 29 [2021-12-28 03:49:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:08,443 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 48034 transitions. [2021-12-28 03:49:08,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:49:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 48034 transitions. [2021-12-28 03:49:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-28 03:49:08,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:08,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:08,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:49:08,446 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:08,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:08,447 INFO L85 PathProgramCache]: Analyzing trace with hash -919829617, now seen corresponding path program 1 times [2021-12-28 03:49:08,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:08,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900612656] [2021-12-28 03:49:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:08,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:49:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:08,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:08,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900612656] [2021-12-28 03:49:08,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900612656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:08,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:08,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:08,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461118348] [2021-12-28 03:49:08,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:08,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:08,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:08,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:08,835 INFO L87 Difference]: Start difference. First operand 30407 states and 48034 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:49:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:12,413 INFO L93 Difference]: Finished difference Result 91375 states and 144800 transitions. [2021-12-28 03:49:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:12,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-28 03:49:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:13,031 INFO L225 Difference]: With dead ends: 91375 [2021-12-28 03:49:13,032 INFO L226 Difference]: Without dead ends: 60971 [2021-12-28 03:49:13,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:49:13,185 INFO L933 BasicCegarLoop]: 3963 mSDtfsCounter, 3011 mSDsluCounter, 5280 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 9243 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:13,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3259 Valid, 9243 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 03:49:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60971 states. [2021-12-28 03:49:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60971 to 60695. [2021-12-28 03:49:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60695 states, 45613 states have (on average 1.5192379365531756) internal successors, (69297), 45684 states have internal predecessors, (69297), 13289 states have call successors, (13289), 1793 states have call predecessors, (13289), 1792 states have return successors, (13280), 13249 states have call predecessors, (13280), 13280 states have call successors, (13280) [2021-12-28 03:49:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60695 states to 60695 states and 95866 transitions. [2021-12-28 03:49:15,954 INFO L78 Accepts]: Start accepts. Automaton has 60695 states and 95866 transitions. Word has length 34 [2021-12-28 03:49:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:15,954 INFO L470 AbstractCegarLoop]: Abstraction has 60695 states and 95866 transitions. [2021-12-28 03:49:15,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:49:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 60695 states and 95866 transitions. [2021-12-28 03:49:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 03:49:15,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:15,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:15,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:49:15,957 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2119451473, now seen corresponding path program 1 times [2021-12-28 03:49:15,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:15,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456932524] [2021-12-28 03:49:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:15,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-28 03:49:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:49:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:16,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:16,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456932524] [2021-12-28 03:49:16,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456932524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:16,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:16,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:49:16,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621505238] [2021-12-28 03:49:16,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:16,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:49:16,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:16,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:49:16,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:49:16,455 INFO L87 Difference]: Start difference. First operand 60695 states and 95866 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 03:49:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:21,163 INFO L93 Difference]: Finished difference Result 182271 states and 288776 transitions. [2021-12-28 03:49:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:49:21,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-28 03:49:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:22,138 INFO L225 Difference]: With dead ends: 182271 [2021-12-28 03:49:22,138 INFO L226 Difference]: Without dead ends: 121579 [2021-12-28 03:49:22,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:49:22,353 INFO L933 BasicCegarLoop]: 3877 mSDtfsCounter, 3018 mSDsluCounter, 5239 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3278 SdHoareTripleChecker+Valid, 9116 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:22,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3278 Valid, 9116 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 03:49:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121579 states. [2021-12-28 03:49:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121579 to 121047. [2021-12-28 03:49:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121047 states, 90957 states have (on average 1.5186186879514496) internal successors, (138129), 91092 states have internal predecessors, (138129), 26505 states have call successors, (26505), 3585 states have call predecessors, (26505), 3584 states have return successors, (26496), 26433 states have call predecessors, (26496), 26496 states have call successors, (26496)