./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 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--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 0.2.1-dev-0f8a17c [2021-11-16 23:49:56,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 23:49:56,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 23:49:56,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 23:49:56,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 23:49:56,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 23:49:56,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 23:49:56,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 23:49:56,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 23:49:56,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 23:49:56,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 23:49:56,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 23:49:56,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 23:49:56,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 23:49:56,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 23:49:56,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 23:49:56,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 23:49:56,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 23:49:56,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 23:49:56,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 23:49:56,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 23:49:56,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 23:49:56,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 23:49:56,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 23:49:56,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 23:49:56,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 23:49:56,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 23:49:56,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 23:49:56,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 23:49:56,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 23:49:56,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 23:49:56,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 23:49:56,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 23:49:56,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 23:49:56,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 23:49:56,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 23:49:56,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 23:49:56,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 23:49:56,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 23:49:56,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 23:49:56,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 23:49:56,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 23:49:56,334 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 23:49:56,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 23:49:56,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 23:49:56,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 23:49:56,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 23:49:56,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 23:49:56,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 23:49:56,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 23:49:56,338 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 23:49:56,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 23:49:56,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 23:49:56,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 23:49:56,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 23:49:56,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 23:49:56,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 23:49:56,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 23:49:56,340 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 23:49:56,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 23:49:56,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 23:49:56,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 23:49:56,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 23:49:56,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:49:56,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 23:49:56,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 23:49:56,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 23:49:56,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 23:49:56,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 23:49:56,342 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 23:49:56,343 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 23:49:56,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 23:49:56,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 23:49:56,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2021-11-16 23:49:56,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 23:49:56,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 23:49:56,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 23:49:56,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 23:49:56,623 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 23:49:56,625 INFO L432 ainManager$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 [2021-11-16 23:49:56,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcac9f00/865a837185604261bcb1dd7d06b41f79/FLAG60800ac08 [2021-11-16 23:49:57,403 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 23:49:57,404 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 [2021-11-16 23:49:57,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcac9f00/865a837185604261bcb1dd7d06b41f79/FLAG60800ac08 [2021-11-16 23:49:57,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcac9f00/865a837185604261bcb1dd7d06b41f79 [2021-11-16 23:49:57,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 23:49:57,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 23:49:57,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 23:49:57,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 23:49:57,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 23:49:57,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:57" (1/1) ... [2021-11-16 23:49:57,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b26f903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:57, skipping insertion in model container [2021-11-16 23:49:57,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:49:57" (1/1) ... [2021-11-16 23:49:57,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 23:49:57,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 23:49:59,075 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] [2021-11-16 23:49:59,229 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:49:59,337 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 23:49:59,625 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] [2021-11-16 23:49:59,637 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:49:59,864 INFO L208 MainTranslator]: Completed translation [2021-11-16 23:49:59,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59 WrapperNode [2021-11-16 23:49:59,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 23:49:59,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 23:49:59,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 23:49:59,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 23:49:59,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,250 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7774 [2021-11-16 23:50:00,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 23:50:00,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 23:50:00,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 23:50:00,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 23:50:00,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 23:50:00,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 23:50:00,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 23:50:00,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 23:50:00,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (1/1) ... [2021-11-16 23:50:00,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:50:00,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 23:50:00,697 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 23:50:00,725 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 23:50:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2021-11-16 23:50:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2021-11-16 23:50:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-11-16 23:50:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-11-16 23:50:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2021-11-16 23:50:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2021-11-16 23:50:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-11-16 23:50:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-11-16 23:50:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2021-11-16 23:50:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2021-11-16 23:50:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-16 23:50:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-16 23:50:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-11-16 23:50:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-11-16 23:50:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-11-16 23:50:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-11-16 23:50:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-11-16 23:50:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-11-16 23:50:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2021-11-16 23:50:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2021-11-16 23:50:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-16 23:50:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-16 23:50:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-16 23:50:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-16 23:50:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-11-16 23:50:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-11-16 23:50:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2021-11-16 23:50:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2021-11-16 23:50:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-16 23:50:00,744 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-16 23:50:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-11-16 23:50:00,744 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-11-16 23:50:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 23:50:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2021-11-16 23:50:00,744 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2021-11-16 23:50:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-11-16 23:50:00,745 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-11-16 23:50:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-11-16 23:50:00,745 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-11-16 23:50:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-11-16 23:50:00,746 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-11-16 23:50:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2021-11-16 23:50:00,746 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2021-11-16 23:50:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-11-16 23:50:00,746 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-11-16 23:50:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 23:50:00,747 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2021-11-16 23:50:00,747 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2021-11-16 23:50:00,747 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-11-16 23:50:00,747 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-11-16 23:50:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 23:50:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 23:50:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-11-16 23:50:00,748 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-11-16 23:50:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-16 23:50:00,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-16 23:50:00,749 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-11-16 23:50:00,750 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-11-16 23:50:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-11-16 23:50:00,750 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-11-16 23:50:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-16 23:50:00,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-16 23:50:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2021-11-16 23:50:00,751 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2021-11-16 23:50:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2021-11-16 23:50:00,751 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2021-11-16 23:50:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2021-11-16 23:50:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2021-11-16 23:50:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-11-16 23:50:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-11-16 23:50:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-16 23:50:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-16 23:50:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-11-16 23:50:00,753 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-11-16 23:50:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-11-16 23:50:00,753 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-11-16 23:50:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-11-16 23:50:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-11-16 23:50:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-11-16 23:50:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-11-16 23:50:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 23:50:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-16 23:50:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-16 23:50:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-16 23:50:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-16 23:50:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-11-16 23:50:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-11-16 23:50:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-11-16 23:50:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-11-16 23:50:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-11-16 23:50:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-11-16 23:50:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 23:50:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-11-16 23:50:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-11-16 23:50:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-11-16 23:50:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-11-16 23:50:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-16 23:50:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-16 23:50:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-11-16 23:50:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-11-16 23:50:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2021-11-16 23:50:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2021-11-16 23:50:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2021-11-16 23:50:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2021-11-16 23:50:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 23:50:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-11-16 23:50:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-11-16 23:50:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 23:50:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-11-16 23:50:00,760 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-11-16 23:50:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 23:50:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-11-16 23:50:00,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-11-16 23:50:00,760 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-11-16 23:50:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-11-16 23:50:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2021-11-16 23:50:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2021-11-16 23:50:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-16 23:50:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-16 23:50:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 23:50:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-11-16 23:50:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-11-16 23:50:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 23:50:00,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 23:50:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-16 23:50:00,767 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-16 23:50:01,622 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 23:50:01,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 23:50:12,240 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 23:50:12,264 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 23:50:12,265 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 23:50:12,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:12 BoogieIcfgContainer [2021-11-16 23:50:12,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 23:50:12,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 23:50:12,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 23:50:12,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 23:50:12,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:49:57" (1/3) ... [2021-11-16 23:50:12,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6518f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:12, skipping insertion in model container [2021-11-16 23:50:12,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:59" (2/3) ... [2021-11-16 23:50:12,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6518f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:50:12, skipping insertion in model container [2021-11-16 23:50:12,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:50:12" (3/3) ... [2021-11-16 23:50:12,278 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-11-16 23:50:12,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 23:50:12,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 23:50:12,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 23:50:12,378 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 23:50:12,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 23:50:12,449 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) [2021-11-16 23:50:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-16 23:50:12,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:12,460 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 23:50:12,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:12,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1921795242, now seen corresponding path program 1 times [2021-11-16 23:50:12,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:12,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031312775] [2021-11-16 23:50:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:12,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-16 23:50:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:13,312 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 23:50:13,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:13,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031312775] [2021-11-16 23:50:13,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031312775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:13,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:13,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:13,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026246329] [2021-11-16 23:50:13,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:13,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:13,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:13,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:13,349 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) [2021-11-16 23:50:15,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:19,133 WARN L515 Checker$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 23:50:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:21,686 INFO L93 Difference]: Finished difference Result 5822 states and 9819 transitions. [2021-11-16 23:50:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:21,691 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 [2021-11-16 23:50:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:21,738 INFO L225 Difference]: With dead ends: 5822 [2021-11-16 23:50:21,738 INFO L226 Difference]: Without dead ends: 3875 [2021-11-16 23:50:21,778 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 23:50:21,784 INFO L933 BasicCegarLoop]: 3617 mSDtfsCounter, 3029 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 928 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 8868 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:21,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 8868 Invalid, 1780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [928 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2021-11-16 23:50:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2021-11-16 23:50:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3839. [2021-11-16 23:50:22,186 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) [2021-11-16 23:50:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 6060 transitions. [2021-11-16 23:50:22,235 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 6060 transitions. Word has length 31 [2021-11-16 23:50:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:22,236 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 6060 transitions. [2021-11-16 23:50:22,236 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) [2021-11-16 23:50:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 6060 transitions. [2021-11-16 23:50:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-16 23:50:22,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:22,246 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 23:50:22,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 23:50:22,247 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:22,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:22,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1987244376, now seen corresponding path program 1 times [2021-11-16 23:50:22,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:22,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213294388] [2021-11-16 23:50:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:22,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 23:50:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:22,779 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 23:50:22,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:22,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213294388] [2021-11-16 23:50:22,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213294388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:22,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:22,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:22,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180158275] [2021-11-16 23:50:22,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:22,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:22,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:22,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:22,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:22,783 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) [2021-11-16 23:50:24,935 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 [] [2021-11-16 23:50:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:28,657 INFO L93 Difference]: Finished difference Result 11531 states and 18262 transitions. [2021-11-16 23:50:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:28,658 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 23:50:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:28,716 INFO L225 Difference]: With dead ends: 11531 [2021-11-16 23:50:28,716 INFO L226 Difference]: Without dead ends: 7695 [2021-11-16 23:50:28,746 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 23:50:28,747 INFO L933 BasicCegarLoop]: 3629 mSDtfsCounter, 3030 mSDsluCounter, 5258 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 927 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 8887 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:28,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 8887 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 848 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-16 23:50:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2021-11-16 23:50:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 7643. [2021-11-16 23:50:29,014 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) [2021-11-16 23:50:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 12072 transitions. [2021-11-16 23:50:29,062 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 12072 transitions. Word has length 32 [2021-11-16 23:50:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:29,063 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 12072 transitions. [2021-11-16 23:50:29,064 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 23:50:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 12072 transitions. [2021-11-16 23:50:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-16 23:50:29,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:29,069 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] [2021-11-16 23:50:29,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-16 23:50:29,069 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -886111828, now seen corresponding path program 1 times [2021-11-16 23:50:29,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:29,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453018932] [2021-11-16 23:50:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:29,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 23:50:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:29,490 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 23:50:29,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:29,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453018932] [2021-11-16 23:50:29,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453018932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:29,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:29,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:29,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293442066] [2021-11-16 23:50:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:29,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:29,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:29,496 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) [2021-11-16 23:50:31,622 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 23:50:36,057 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 23:50:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:37,374 INFO L93 Difference]: Finished difference Result 22963 states and 36386 transitions. [2021-11-16 23:50:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:37,375 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 [2021-11-16 23:50:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:37,484 INFO L225 Difference]: With dead ends: 22963 [2021-11-16 23:50:37,485 INFO L226 Difference]: Without dead ends: 15323 [2021-11-16 23:50:37,545 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 23:50:37,549 INFO L933 BasicCegarLoop]: 3518 mSDtfsCounter, 3069 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 961 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3328 SdHoareTripleChecker+Valid, 8738 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:37,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3328 Valid, 8738 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 845 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-16 23:50:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15323 states. [2021-11-16 23:50:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15323 to 15239. [2021-11-16 23:50:38,306 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) [2021-11-16 23:50:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15239 states to 15239 states and 24074 transitions. [2021-11-16 23:50:38,395 INFO L78 Accepts]: Start accepts. Automaton has 15239 states and 24074 transitions. Word has length 28 [2021-11-16 23:50:38,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:38,395 INFO L470 AbstractCegarLoop]: Abstraction has 15239 states and 24074 transitions. [2021-11-16 23:50:38,396 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) [2021-11-16 23:50:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 15239 states and 24074 transitions. [2021-11-16 23:50:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-16 23:50:38,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:38,399 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] [2021-11-16 23:50:38,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-16 23:50:38,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:38,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash 409562076, now seen corresponding path program 1 times [2021-11-16 23:50:38,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:38,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003681037] [2021-11-16 23:50:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:38,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 23:50:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:38,838 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 23:50:38,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:38,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003681037] [2021-11-16 23:50:38,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003681037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:38,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:38,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:38,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319219026] [2021-11-16 23:50:38,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:38,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:38,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:38,841 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) [2021-11-16 23:50:40,985 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 [] [2021-11-16 23:50:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:44,652 INFO L93 Difference]: Finished difference Result 45791 states and 72568 transitions. [2021-11-16 23:50:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:44,652 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 [2021-11-16 23:50:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:44,944 INFO L225 Difference]: With dead ends: 45791 [2021-11-16 23:50:44,945 INFO L226 Difference]: Without dead ends: 30555 [2021-11-16 23:50:45,047 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 23:50:45,048 INFO L933 BasicCegarLoop]: 3870 mSDtfsCounter, 3044 mSDsluCounter, 5483 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 902 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 9353 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:45,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3292 Valid, 9353 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 853 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-16 23:50:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30555 states. [2021-11-16 23:50:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30555 to 30407. [2021-11-16 23:50:46,216 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) [2021-11-16 23:50:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 48034 transitions. [2021-11-16 23:50:46,418 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 48034 transitions. Word has length 29 [2021-11-16 23:50:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:46,419 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 48034 transitions. [2021-11-16 23:50:46,420 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) [2021-11-16 23:50:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 48034 transitions. [2021-11-16 23:50:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-16 23:50:46,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:46,422 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 23:50:46,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-16 23:50:46,423 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash -919829617, now seen corresponding path program 1 times [2021-11-16 23:50:46,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:46,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296706195] [2021-11-16 23:50:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:46,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:46,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:50:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:46,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:46,961 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 23:50:46,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:46,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296706195] [2021-11-16 23:50:46,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296706195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:46,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:46,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:46,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368902236] [2021-11-16 23:50:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:46,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:46,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:46,964 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) [2021-11-16 23:50:49,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:50:53,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:50:53,313 INFO L93 Difference]: Finished difference Result 91375 states and 144800 transitions. [2021-11-16 23:50:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:50:53,314 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 23:50:53,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:50:53,699 INFO L225 Difference]: With dead ends: 91375 [2021-11-16 23:50:53,700 INFO L226 Difference]: Without dead ends: 60971 [2021-11-16 23:50:53,893 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 23:50:53,896 INFO L933 BasicCegarLoop]: 3960 mSDtfsCounter, 3013 mSDsluCounter, 5536 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 881 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3273 SdHoareTripleChecker+Valid, 9496 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-16 23:50:53,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3273 Valid, 9496 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 854 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-16 23:50:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60971 states. [2021-11-16 23:50:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60971 to 60695. [2021-11-16 23:50:56,309 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) [2021-11-16 23:50:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60695 states to 60695 states and 95866 transitions. [2021-11-16 23:50:56,909 INFO L78 Accepts]: Start accepts. Automaton has 60695 states and 95866 transitions. Word has length 34 [2021-11-16 23:50:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:50:56,910 INFO L470 AbstractCegarLoop]: Abstraction has 60695 states and 95866 transitions. [2021-11-16 23:50:56,910 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 23:50:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 60695 states and 95866 transitions. [2021-11-16 23:50:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-16 23:50:57,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:50:57,060 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 23:50:57,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-16 23:50:57,060 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:50:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:50:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2119451473, now seen corresponding path program 1 times [2021-11-16 23:50:57,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:50:57,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752155792] [2021-11-16 23:50:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:50:57,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:50:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 23:50:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:50:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:50:57,369 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 23:50:57,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:50:57,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752155792] [2021-11-16 23:50:57,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752155792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:50:57,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:50:57,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:50:57,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156518339] [2021-11-16 23:50:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:50:57,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:50:57,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:50:57,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:50:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:50:57,375 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) [2021-11-16 23:50:59,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:04,811 INFO L93 Difference]: Finished difference Result 182271 states and 288776 transitions. [2021-11-16 23:51:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:04,811 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 23:51:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:05,679 INFO L225 Difference]: With dead ends: 182271 [2021-11-16 23:51:05,679 INFO L226 Difference]: Without dead ends: 121579 [2021-11-16 23:51:06,213 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 23:51:06,214 INFO L933 BasicCegarLoop]: 3865 mSDtfsCounter, 3018 mSDsluCounter, 5460 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 901 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 9325 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:06,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3279 Valid, 9325 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 853 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-16 23:51:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121579 states. [2021-11-16 23:51:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121579 to 121047. [2021-11-16 23:51:10,374 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) [2021-11-16 23:51:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121047 states to 121047 states and 191130 transitions. [2021-11-16 23:51:11,573 INFO L78 Accepts]: Start accepts. Automaton has 121047 states and 191130 transitions. Word has length 32 [2021-11-16 23:51:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:11,574 INFO L470 AbstractCegarLoop]: Abstraction has 121047 states and 191130 transitions. [2021-11-16 23:51:11,575 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 23:51:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 121047 states and 191130 transitions. [2021-11-16 23:51:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-16 23:51:11,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:11,578 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, 1, 1] [2021-11-16 23:51:11,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-16 23:51:11,582 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:11,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2080190433, now seen corresponding path program 1 times [2021-11-16 23:51:11,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:11,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273477542] [2021-11-16 23:51:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:11,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 23:51:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:11,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:51:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:11,953 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 23:51:11,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:11,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273477542] [2021-11-16 23:51:11,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273477542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:11,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:11,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:11,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637516592] [2021-11-16 23:51:11,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:11,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:11,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:11,956 INFO L87 Difference]: Start difference. First operand 121047 states and 191130 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 23:51:14,098 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 23:51:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:22,436 INFO L93 Difference]: Finished difference Result 363775 states and 576200 transitions. [2021-11-16 23:51:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 39 [2021-11-16 23:51:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:24,213 INFO L225 Difference]: With dead ends: 363775 [2021-11-16 23:51:24,214 INFO L226 Difference]: Without dead ends: 242731 [2021-11-16 23:51:24,759 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 23:51:24,760 INFO L933 BasicCegarLoop]: 4092 mSDtfsCounter, 3003 mSDsluCounter, 5618 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 857 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3253 SdHoareTripleChecker+Valid, 9710 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:24,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3253 Valid, 9710 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 864 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-16 23:51:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242731 states. [2021-11-16 23:51:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242731 to 241687. [2021-11-16 23:51:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241687 states, 181581 states have (on average 1.5181379109047752) internal successors, (275665), 181844 states have internal predecessors, (275665), 52937 states have call successors, (52937), 7169 states have call predecessors, (52937), 7168 states have return successors, (52928), 52801 states have call predecessors, (52928), 52928 states have call successors, (52928) [2021-11-16 23:51:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241687 states to 241687 states and 381530 transitions. [2021-11-16 23:51:33,929 INFO L78 Accepts]: Start accepts. Automaton has 241687 states and 381530 transitions. Word has length 39 [2021-11-16 23:51:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:33,929 INFO L470 AbstractCegarLoop]: Abstraction has 241687 states and 381530 transitions. [2021-11-16 23:51:33,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 23:51:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 241687 states and 381530 transitions. [2021-11-16 23:51:33,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-16 23:51:33,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:33,932 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, 1] [2021-11-16 23:51:33,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-16 23:51:33,932 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:33,933 INFO L85 PathProgramCache]: Analyzing trace with hash 218624999, now seen corresponding path program 1 times [2021-11-16 23:51:33,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:33,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275560221] [2021-11-16 23:51:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:33,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 23:51:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 23:51:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:34,286 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 23:51:34,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:34,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275560221] [2021-11-16 23:51:34,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275560221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:34,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:34,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:34,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214216621] [2021-11-16 23:51:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:34,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:34,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:34,290 INFO L87 Difference]: Start difference. First operand 241687 states and 381530 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 23:51:36,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []