./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--amc6821.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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--amc6821.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 b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:23:44,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:23:44,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:23:44,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:23:44,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:23:44,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:23:44,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:23:44,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:23:44,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:23:44,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:23:44,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:23:44,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:23:44,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:23:44,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:23:44,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:23:44,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:23:44,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:23:44,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:23:44,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:23:44,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:23:44,261 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:23:44,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:23:44,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:23:44,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:23:44,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:23:44,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:23:44,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:23:44,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:23:44,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:23:44,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:23:44,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:23:44,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:23:44,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:23:44,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:23:44,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:23:44,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:23:44,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:23:44,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:23:44,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:23:44,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:23:44,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:23:44,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:23:44,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:23:44,300 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:23:44,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:23:44,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:23:44,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:23:44,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:23:44,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:23:44,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:23:44,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:23:44,302 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:23:44,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:23:44,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:23:44,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:23:44,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:23:44,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:23:44,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:23:44,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:23:44,303 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:23:44,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:23:44,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:23:44,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:23:44,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:23:44,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:23:44,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:23:44,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:23:44,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:23:44,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:23:44,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:23:44,305 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:23:44,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:23:44,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:23:44,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4ab5f9a609d808b1cc730f70e246b6cee2b77e8055db2b71a14eb45eb69a8df [2022-07-22 23:23:44,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:23:44,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:23:44,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:23:44,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:23:44,458 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:23:44,460 INFO L432 ainManager$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--amc6821.ko-main.cil.out.i [2022-07-22 23:23:44,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43ad11e00/8582013e52f949a1b0a2dc8f8e99387c/FLAG024caa0eb [2022-07-22 23:23:45,042 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:23:45,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-07-22 23:23:45,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43ad11e00/8582013e52f949a1b0a2dc8f8e99387c/FLAG024caa0eb [2022-07-22 23:23:45,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43ad11e00/8582013e52f949a1b0a2dc8f8e99387c [2022-07-22 23:23:45,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:23:45,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:23:45,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:23:45,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:23:45,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:23:45,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:23:45" (1/1) ... [2022-07-22 23:23:45,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea56b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:45, skipping insertion in model container [2022-07-22 23:23:45,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:23:45" (1/1) ... [2022-07-22 23:23:45,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:23:45,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:23:46,101 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--amc6821.ko-main.cil.out.i[139464,139477] [2022-07-22 23:23:46,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:23:46,200 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:23:46,333 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--amc6821.ko-main.cil.out.i[139464,139477] [2022-07-22 23:23:46,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:23:46,429 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:23:46,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46 WrapperNode [2022-07-22 23:23:46,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:23:46,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:23:46,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:23:46,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:23:46,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,600 INFO L137 Inliner]: procedures = 138, calls = 1364, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 3772 [2022-07-22 23:23:46,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:23:46,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:23:46,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:23:46,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:23:46,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:23:46,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:23:46,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:23:46,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:23:46,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (1/1) ... [2022-07-22 23:23:46,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:23:46,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:23:46,783 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) [2022-07-22 23:23:46,802 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 [2022-07-22 23:23:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure get_pwm1_auto_point_pwm [2022-07-22 23:23:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pwm1_auto_point_pwm [2022-07-22 23:23:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:23:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure get_fan [2022-07-22 23:23:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fan [2022-07-22 23:23:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-22 23:23:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-22 23:23:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-07-22 23:23:46,817 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-07-22 23:23:46,817 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_detect [2022-07-22 23:23:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_detect [2022-07-22 23:23:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:23:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:23:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:23:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:23:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:23:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:23:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:23:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:23:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:23:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:23:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-07-22 23:23:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_amc6821_data [2022-07-22 23:23:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:23:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:23:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_auto_point_temp [2022-07-22 23:23:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_auto_point_temp [2022-07-22 23:23:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure set_slope_register [2022-07-22 23:23:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure set_slope_register [2022-07-22 23:23:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp_alarm [2022-07-22 23:23:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp_alarm [2022-07-22 23:23:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:23:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:23:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:23:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2022-07-22 23:23:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2022-07-22 23:23:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-07-22 23:23:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-07-22 23:23:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:23:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure amc6821_update_device [2022-07-22 23:23:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure amc6821_update_device [2022-07-22 23:23:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-07-22 23:23:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-07-22 23:23:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:23:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:23:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure get_temp [2022-07-22 23:23:46,823 INFO L138 BoogieDeclarations]: Found implementation of procedure get_temp [2022-07-22 23:23:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp [2022-07-22 23:23:46,823 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp [2022-07-22 23:23:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan [2022-07-22 23:23:46,824 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan [2022-07-22 23:23:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:23:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-07-22 23:23:46,824 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-07-22 23:23:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-07-22 23:23:46,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_amc6821_data [2022-07-22 23:23:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:23:46,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:23:46,826 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_auto_point_temp [2022-07-22 23:23:46,826 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_auto_point_temp [2022-07-22 23:23:46,827 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:23:46,827 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:23:47,301 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:23:47,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:23:49,385 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:23:49,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:23:49,410 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:23:49,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:23:49 BoogieIcfgContainer [2022-07-22 23:23:49,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:23:49,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:23:49,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:23:49,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:23:49,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:23:45" (1/3) ... [2022-07-22 23:23:49,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1cee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:23:49, skipping insertion in model container [2022-07-22 23:23:49,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:23:46" (2/3) ... [2022-07-22 23:23:49,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1cee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:23:49, skipping insertion in model container [2022-07-22 23:23:49,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:23:49" (3/3) ... [2022-07-22 23:23:49,436 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--amc6821.ko-main.cil.out.i [2022-07-22 23:23:49,449 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:23:49,449 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:23:49,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:23:49,538 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69d6897a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6aac80b2 [2022-07-22 23:23:49,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:23:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 935 states, 738 states have (on average 1.570460704607046) internal successors, (1159), 745 states have internal predecessors, (1159), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2022-07-22 23:23:49,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 23:23:49,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:49,569 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:23:49,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2093746445, now seen corresponding path program 1 times [2022-07-22 23:23:49,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:49,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339800555] [2022-07-22 23:23:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:49,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:23:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:50,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:50,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339800555] [2022-07-22 23:23:50,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339800555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:50,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:50,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:50,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433625100] [2022-07-22 23:23:50,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:50,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:50,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:50,223 INFO L87 Difference]: Start difference. First operand has 935 states, 738 states have (on average 1.570460704607046) internal successors, (1159), 745 states have internal predecessors, (1159), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:51,629 INFO L93 Difference]: Finished difference Result 2950 states and 4940 transitions. [2022-07-22 23:23:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:23:51,632 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-07-22 23:23:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:51,653 INFO L225 Difference]: With dead ends: 2950 [2022-07-22 23:23:51,653 INFO L226 Difference]: Without dead ends: 2010 [2022-07-22 23:23:51,662 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:23:51,664 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 1528 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:51,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 4165 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 23:23:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-22 23:23:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1833. [2022-07-22 23:23:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1451 states have (on average 1.4624396967608546) internal successors, (2122), 1456 states have internal predecessors, (2122), 333 states have call successors, (333), 49 states have call predecessors, (333), 48 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2022-07-22 23:23:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2782 transitions. [2022-07-22 23:23:51,801 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2782 transitions. Word has length 30 [2022-07-22 23:23:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:51,801 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 2782 transitions. [2022-07-22 23:23:51,801 INFO L496 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2782 transitions. [2022-07-22 23:23:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 23:23:51,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:51,804 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:23:51,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:23:51,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1170799053, now seen corresponding path program 1 times [2022-07-22 23:23:51,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:51,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113688700] [2022-07-22 23:23:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:51,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:23:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:51,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113688700] [2022-07-22 23:23:51,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113688700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:51,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:51,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:51,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994456927] [2022-07-22 23:23:51,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:51,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:51,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:51,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:51,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:51,977 INFO L87 Difference]: Start difference. First operand 1833 states and 2782 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:53,181 INFO L93 Difference]: Finished difference Result 5797 states and 8876 transitions. [2022-07-22 23:23:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:23:53,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-07-22 23:23:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:53,204 INFO L225 Difference]: With dead ends: 5797 [2022-07-22 23:23:53,204 INFO L226 Difference]: Without dead ends: 3967 [2022-07-22 23:23:53,214 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:23:53,215 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1515 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:53,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 4170 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 23:23:53,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-07-22 23:23:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3628. [2022-07-22 23:23:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2875 states have (on average 1.4615652173913043) internal successors, (4202), 2880 states have internal predecessors, (4202), 656 states have call successors, (656), 97 states have call predecessors, (656), 96 states have return successors, (650), 650 states have call predecessors, (650), 650 states have call successors, (650) [2022-07-22 23:23:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5508 transitions. [2022-07-22 23:23:53,365 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5508 transitions. Word has length 36 [2022-07-22 23:23:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:53,366 INFO L495 AbstractCegarLoop]: Abstraction has 3628 states and 5508 transitions. [2022-07-22 23:23:53,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5508 transitions. [2022-07-22 23:23:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 23:23:53,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:53,368 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:23:53,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:23:53,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:53,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2057944644, now seen corresponding path program 1 times [2022-07-22 23:23:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:53,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872799689] [2022-07-22 23:23:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:23:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:53,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:53,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872799689] [2022-07-22 23:23:53,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872799689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:53,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:53,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:53,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445508129] [2022-07-22 23:23:53,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:53,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:53,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:53,563 INFO L87 Difference]: Start difference. First operand 3628 states and 5508 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) [2022-07-22 23:23:54,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:54,791 INFO L93 Difference]: Finished difference Result 11502 states and 17614 transitions. [2022-07-22 23:23:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:23:54,792 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 [2022-07-22 23:23:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:54,829 INFO L225 Difference]: With dead ends: 11502 [2022-07-22 23:23:54,829 INFO L226 Difference]: Without dead ends: 7877 [2022-07-22 23:23:54,845 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:23:54,848 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 1523 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:54,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4204 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 23:23:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2022-07-22 23:23:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7214. [2022-07-22 23:23:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7214 states, 5719 states have (on average 1.4607448854694878) internal successors, (8354), 5724 states have internal predecessors, (8354), 1302 states have call successors, (1302), 193 states have call predecessors, (1302), 192 states have return successors, (1296), 1296 states have call predecessors, (1296), 1296 states have call successors, (1296) [2022-07-22 23:23:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7214 states to 7214 states and 10952 transitions. [2022-07-22 23:23:55,057 INFO L78 Accepts]: Start accepts. Automaton has 7214 states and 10952 transitions. Word has length 34 [2022-07-22 23:23:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:55,058 INFO L495 AbstractCegarLoop]: Abstraction has 7214 states and 10952 transitions. [2022-07-22 23:23:55,058 INFO L496 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) [2022-07-22 23:23:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 7214 states and 10952 transitions. [2022-07-22 23:23:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 23:23:55,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:55,059 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:23:55,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:23:55,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -880553717, now seen corresponding path program 1 times [2022-07-22 23:23:55,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:55,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576418739] [2022-07-22 23:23:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:23:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576418739] [2022-07-22 23:23:55,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576418739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:55,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:55,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223039242] [2022-07-22 23:23:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:55,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:55,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:55,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:55,242 INFO L87 Difference]: Start difference. First operand 7214 states and 10952 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:56,401 INFO L93 Difference]: Finished difference Result 22852 states and 34986 transitions. [2022-07-22 23:23:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:23:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-07-22 23:23:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:56,511 INFO L225 Difference]: With dead ends: 22852 [2022-07-22 23:23:56,511 INFO L226 Difference]: Without dead ends: 15641 [2022-07-22 23:23:56,534 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:23:56,535 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 1514 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:56,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 4219 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:23:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2022-07-22 23:23:56,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 14330. [2022-07-22 23:23:56,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14330 states, 11363 states have (on average 1.4592977206723576) internal successors, (16582), 11368 states have internal predecessors, (16582), 2582 states have call successors, (2582), 385 states have call predecessors, (2582), 384 states have return successors, (2576), 2576 states have call predecessors, (2576), 2576 states have call successors, (2576) [2022-07-22 23:23:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 21740 transitions. [2022-07-22 23:23:56,966 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 21740 transitions. Word has length 36 [2022-07-22 23:23:56,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:56,967 INFO L495 AbstractCegarLoop]: Abstraction has 14330 states and 21740 transitions. [2022-07-22 23:23:56,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 21740 transitions. [2022-07-22 23:23:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-22 23:23:56,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:56,968 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:23:56,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:23:56,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash 978092325, now seen corresponding path program 1 times [2022-07-22 23:23:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:56,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953293394] [2022-07-22 23:23:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:56,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:23:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:57,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:57,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:57,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953293394] [2022-07-22 23:23:57,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953293394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:57,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:57,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221929607] [2022-07-22 23:23:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:57,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:57,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:57,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:57,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:57,099 INFO L87 Difference]: Start difference. First operand 14330 states and 21740 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:58,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:23:58,642 INFO L93 Difference]: Finished difference Result 45448 states and 69534 transitions. [2022-07-22 23:23:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:23:58,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-07-22 23:23:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:23:58,758 INFO L225 Difference]: With dead ends: 45448 [2022-07-22 23:23:58,758 INFO L226 Difference]: Without dead ends: 31121 [2022-07-22 23:23:58,809 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:23:58,809 INFO L413 NwaCegarLoop]: 1838 mSDtfsCounter, 1523 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:23:58,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4410 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 23:23:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31121 states. [2022-07-22 23:23:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31121 to 28514. [2022-07-22 23:23:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28514 states, 22603 states have (on average 1.4581250276511968) internal successors, (32958), 22608 states have internal predecessors, (32958), 5142 states have call successors, (5142), 769 states have call predecessors, (5142), 768 states have return successors, (5136), 5136 states have call predecessors, (5136), 5136 states have call successors, (5136) [2022-07-22 23:23:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28514 states to 28514 states and 43236 transitions. [2022-07-22 23:23:59,679 INFO L78 Accepts]: Start accepts. Automaton has 28514 states and 43236 transitions. Word has length 29 [2022-07-22 23:23:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:23:59,680 INFO L495 AbstractCegarLoop]: Abstraction has 28514 states and 43236 transitions. [2022-07-22 23:23:59,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:23:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28514 states and 43236 transitions. [2022-07-22 23:23:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 23:23:59,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:23:59,682 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:23:59,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:23:59,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:23:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:23:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -758457314, now seen corresponding path program 1 times [2022-07-22 23:23:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:23:59,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053681639] [2022-07-22 23:23:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:23:59,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:23:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 23:23:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:23:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:23:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:23:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:23:59,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053681639] [2022-07-22 23:23:59,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053681639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:23:59,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:23:59,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:23:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608575636] [2022-07-22 23:23:59,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:23:59,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:23:59,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:23:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:23:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:23:59,849 INFO L87 Difference]: Start difference. First operand 28514 states and 43236 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:02,311 INFO L93 Difference]: Finished difference Result 90528 states and 138438 transitions. [2022-07-22 23:24:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-22 23:24:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:02,664 INFO L225 Difference]: With dead ends: 90528 [2022-07-22 23:24:02,664 INFO L226 Difference]: Without dead ends: 62017 [2022-07-22 23:24:02,756 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:02,759 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1524 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:02,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4436 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:24:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62017 states. [2022-07-22 23:24:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62017 to 56818. [2022-07-22 23:24:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56818 states, 45035 states have (on average 1.45695570112135) internal successors, (65614), 45040 states have internal predecessors, (65614), 10246 states have call successors, (10246), 1537 states have call predecessors, (10246), 1536 states have return successors, (10240), 10240 states have call predecessors, (10240), 10240 states have call successors, (10240) [2022-07-22 23:24:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56818 states to 56818 states and 86100 transitions. [2022-07-22 23:24:04,790 INFO L78 Accepts]: Start accepts. Automaton has 56818 states and 86100 transitions. Word has length 33 [2022-07-22 23:24:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:04,791 INFO L495 AbstractCegarLoop]: Abstraction has 56818 states and 86100 transitions. [2022-07-22 23:24:04,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 56818 states and 86100 transitions. [2022-07-22 23:24:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 23:24:04,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:04,801 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:24:04,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:24:04,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1936448029, now seen corresponding path program 1 times [2022-07-22 23:24:04,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:04,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703310615] [2022-07-22 23:24:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:04,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:24:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:05,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:05,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703310615] [2022-07-22 23:24:05,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703310615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:05,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:05,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:05,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055708115] [2022-07-22 23:24:05,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:05,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:05,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:05,137 INFO L87 Difference]: Start difference. First operand 56818 states and 86100 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:08,362 INFO L93 Difference]: Finished difference Result 180432 states and 275702 transitions. [2022-07-22 23:24:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:08,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-07-22 23:24:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:09,133 INFO L225 Difference]: With dead ends: 180432 [2022-07-22 23:24:09,134 INFO L226 Difference]: Without dead ends: 123617 [2022-07-22 23:24:09,343 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:09,344 INFO L413 NwaCegarLoop]: 1861 mSDtfsCounter, 1527 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:09,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 4454 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 23:24:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123617 states. [2022-07-22 23:24:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123617 to 113234. [2022-07-22 23:24:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113234 states, 89739 states have (on average 1.4557550228997427) internal successors, (130638), 89744 states have internal predecessors, (130638), 20422 states have call successors, (20422), 3073 states have call predecessors, (20422), 3072 states have return successors, (20416), 20416 states have call predecessors, (20416), 20416 states have call successors, (20416) [2022-07-22 23:24:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113234 states to 113234 states and 171476 transitions. [2022-07-22 23:24:13,406 INFO L78 Accepts]: Start accepts. Automaton has 113234 states and 171476 transitions. Word has length 30 [2022-07-22 23:24:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:13,406 INFO L495 AbstractCegarLoop]: Abstraction has 113234 states and 171476 transitions. [2022-07-22 23:24:13,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 23:24:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 113234 states and 171476 transitions. [2022-07-22 23:24:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 23:24:13,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:13,408 INFO L195 NwaCegarLoop]: 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, 1] [2022-07-22 23:24:13,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:24:13,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1266288340, now seen corresponding path program 1 times [2022-07-22 23:24:13,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:13,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880106595] [2022-07-22 23:24:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:13,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:24:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:13,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:13,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880106595] [2022-07-22 23:24:13,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880106595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:13,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:13,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:13,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114618393] [2022-07-22 23:24:13,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:13,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:13,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:13,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:13,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:13,574 INFO L87 Difference]: Start difference. First operand 113234 states and 171476 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-22 23:24:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:19,413 INFO L93 Difference]: Finished difference Result 359152 states and 548214 transitions. [2022-07-22 23:24:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:19,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 40 [2022-07-22 23:24:19,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:20,829 INFO L225 Difference]: With dead ends: 359152 [2022-07-22 23:24:20,829 INFO L226 Difference]: Without dead ends: 245921 [2022-07-22 23:24:21,450 INFO L412 NwaCegarLoop]: 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 [2022-07-22 23:24:21,451 INFO L413 NwaCegarLoop]: 1870 mSDtfsCounter, 1511 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:24:21,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 4468 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:24:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245921 states. [2022-07-22 23:24:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245921 to 225170. [2022-07-22 23:24:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225170 states, 178443 states have (on average 1.4540777727341505) internal successors, (259470), 178448 states have internal predecessors, (259470), 40582 states have call successors, (40582), 6145 states have call predecessors, (40582), 6144 states have return successors, (40576), 40576 states have call predecessors, (40576), 40576 states have call successors, (40576) [2022-07-22 23:24:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225170 states to 225170 states and 340628 transitions. [2022-07-22 23:24:28,964 INFO L78 Accepts]: Start accepts. Automaton has 225170 states and 340628 transitions. Word has length 40 [2022-07-22 23:24:28,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:24:28,965 INFO L495 AbstractCegarLoop]: Abstraction has 225170 states and 340628 transitions. [2022-07-22 23:24:28,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-22 23:24:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 225170 states and 340628 transitions. [2022-07-22 23:24:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 23:24:28,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:24:28,966 INFO L195 NwaCegarLoop]: 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] [2022-07-22 23:24:28,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:24:28,967 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:24:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:24:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1345085814, now seen corresponding path program 1 times [2022-07-22 23:24:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:24:28,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915224036] [2022-07-22 23:24:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:24:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:24:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:29,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 23:24:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:29,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:24:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:24:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:24:29,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:24:29,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915224036] [2022-07-22 23:24:29,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915224036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:24:29,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:24:29,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:24:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172943240] [2022-07-22 23:24:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:24:29,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:24:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:24:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:24:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:24:29,120 INFO L87 Difference]: Start difference. First operand 225170 states and 340628 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) [2022-07-22 23:24:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:24:40,452 INFO L93 Difference]: Finished difference Result 714416 states and 1089206 transitions. [2022-07-22 23:24:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:24:40,459 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 [2022-07-22 23:24:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:24:43,498 INFO L225 Difference]: With dead ends: 714416 [2022-07-22 23:24:43,498 INFO L226 Difference]: Without dead ends: 489249