./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--asb100.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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--asb100.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 a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:36:03,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:36:03,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:36:03,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:36:03,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:36:03,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:36:03,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:36:03,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:36:03,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:36:03,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:36:03,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:36:03,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:36:03,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:36:03,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:36:03,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:36:03,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:36:03,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:36:03,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:36:03,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:36:03,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:36:03,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:36:03,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:36:03,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:36:03,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:36:03,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:36:03,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:36:03,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:36:03,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:36:03,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:36:03,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:36:03,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:36:03,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:36:03,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:36:03,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:36:03,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:36:03,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:36:03,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:36:03,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:36:03,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:36:03,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:36:03,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:36:03,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:36:03,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:36:03,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:36:03,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:36:03,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:36:03,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:36:03,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:36:03,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:36:03,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:36:03,656 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:36:03,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:36:03,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:36:03,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:36:03,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:36:03,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:36:03,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:36:03,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:36:03,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:36:03,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:36:03,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:36:03,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:36:03,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:36:03,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:36:03,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:36:03,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:36:03,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:36:03,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:36:03,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:36:03,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:36:03,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:36:03,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:36:03,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:36:03,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a172742698d01ea3d6a7e277a97e7636a1425e62fd3035feb511b810f7b798f5 [2021-12-14 17:36:03,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:36:03,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:36:03,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:36:03,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:36:03,891 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:36:03,892 INFO L432 ainManager$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--asb100.ko-main.cil.out.i [2021-12-14 17:36:03,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea37d54e/50b2a7059b534086915b9b1301eecd55/FLAG80588d67a [2021-12-14 17:36:04,478 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:36:04,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-14 17:36:04,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea37d54e/50b2a7059b534086915b9b1301eecd55/FLAG80588d67a [2021-12-14 17:36:04,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea37d54e/50b2a7059b534086915b9b1301eecd55 [2021-12-14 17:36:04,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:36:04,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:36:04,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:36:04,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:36:04,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:36:04,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:36:04" (1/1) ... [2021-12-14 17:36:04,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7d9a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:04, skipping insertion in model container [2021-12-14 17:36:04,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:36:04" (1/1) ... [2021-12-14 17:36:04,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:36:05,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:36:05,952 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--asb100.ko-main.cil.out.i[168612,168625] [2021-12-14 17:36:06,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:36:06,077 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:36:06,216 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--asb100.ko-main.cil.out.i[168612,168625] [2021-12-14 17:36:06,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:36:06,345 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:36:06,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06 WrapperNode [2021-12-14 17:36:06,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:36:06,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:36:06,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:36:06,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:36:06,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,538 INFO L137 Inliner]: procedures = 184, calls = 1937, calls flagged for inlining = 74, calls inlined = 66, statements flattened = 5079 [2021-12-14 17:36:06,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:36:06,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:36:06,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:36:06,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:36:06,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:36:06,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:36:06,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:36:06,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:36:06,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (1/1) ... [2021-12-14 17:36:06,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:36:06,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:36:06,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:36:06,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:36:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-14 17:36:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-14 17:36:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:36:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:36:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-14 17:36:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-14 17:36:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-14 17:36:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_asb100_data [2021-12-14 17:36:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-14 17:36:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-14 17:36:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-14 17:36:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_asb100_data [2021-12-14 17:36:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_max [2021-12-14 17:36:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_max [2021-12-14 17:36:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:36:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_hyst [2021-12-14 17:36:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_hyst [2021-12-14 17:36:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-14 17:36:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-14 17:36:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-14 17:36:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-14 17:36:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-14 17:36:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-14 17:36:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_hyst [2021-12-14 17:36:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_hyst [2021-12-14 17:36:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf_temp_from_reg [2021-12-14 17:36:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure sprintf_temp_from_reg [2021-12-14 17:36:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:36:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:36:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_update_device [2021-12-14 17:36:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_update_device [2021-12-14 17:36:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-14 17:36:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-14 17:36:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-14 17:36:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_asb100_data [2021-12-14 17:36:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-14 17:36:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-14 17:36:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_div [2021-12-14 17:36:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_div [2021-12-14 17:36:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-14 17:36:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-14 17:36:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:36:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:36:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:36:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:36:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:36:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-14 17:36:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-14 17:36:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure set_temp_max [2021-12-14 17:36:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure set_temp_max [2021-12-14 17:36:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:36:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:36:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure IN_TO_REG [2021-12-14 17:36:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_TO_REG [2021-12-14 17:36:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure set_in_min [2021-12-14 17:36:06,818 INFO L138 BoogieDeclarations]: Found implementation of procedure set_in_min [2021-12-14 17:36:06,818 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_write_value [2021-12-14 17:36:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_write_value [2021-12-14 17:36:06,819 INFO L130 BoogieDeclarations]: Found specification of procedure TEMP_TO_REG [2021-12-14 17:36:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure TEMP_TO_REG [2021-12-14 17:36:06,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:36:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:36:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:36:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-14 17:36:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-14 17:36:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:36:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:36:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure set_fan_min [2021-12-14 17:36:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure set_fan_min [2021-12-14 17:36:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-14 17:36:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-14 17:36:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:36:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-14 17:36:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_asb100_data [2021-12-14 17:36:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-14 17:36:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-14 17:36:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-14 17:36:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-14 17:36:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-14 17:36:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-14 17:36:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-14 17:36:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-14 17:36:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-14 17:36:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-14 17:36:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:36:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-14 17:36:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-14 17:36:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:36:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure IN_FROM_REG [2021-12-14 17:36:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure IN_FROM_REG [2021-12-14 17:36:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-14 17:36:06,824 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-14 17:36:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:36:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-14 17:36:06,824 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-14 17:36:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_detect [2021-12-14 17:36:06,825 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_detect [2021-12-14 17:36:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure asb100_read_value [2021-12-14 17:36:06,825 INFO L138 BoogieDeclarations]: Found implementation of procedure asb100_read_value [2021-12-14 17:36:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 17:36:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 17:36:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-14 17:36:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-14 17:36:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:36:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:36:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-14 17:36:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-14 17:36:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:36:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-14 17:36:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-14 17:36:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:36:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:36:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:36:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:36:07,412 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:36:07,414 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:36:10,202 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:36:10,217 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:36:10,218 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:36:10,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:36:10 BoogieIcfgContainer [2021-12-14 17:36:10,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:36:10,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:36:10,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:36:10,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:36:10,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:36:04" (1/3) ... [2021-12-14 17:36:10,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38636b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:36:10, skipping insertion in model container [2021-12-14 17:36:10,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:36:06" (2/3) ... [2021-12-14 17:36:10,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38636b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:36:10, skipping insertion in model container [2021-12-14 17:36:10,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:36:10" (3/3) ... [2021-12-14 17:36:10,234 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--asb100.ko-main.cil.out.i [2021-12-14 17:36:10,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:36:10,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:36:10,272 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:36:10,276 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:36:10,276 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:36:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2021-12-14 17:36:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:36:10,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:10,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:10,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:10,313 INFO L85 PathProgramCache]: Analyzing trace with hash -773562485, now seen corresponding path program 1 times [2021-12-14 17:36:10,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:10,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070710174] [2021-12-14 17:36:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:10,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:36:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:10,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:10,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070710174] [2021-12-14 17:36:10,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070710174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:10,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:10,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:10,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647678485] [2021-12-14 17:36:10,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:10,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:10,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:10,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:10,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:10,915 INFO L87 Difference]: Start difference. First operand has 1289 states, 959 states have (on average 1.4817518248175183) internal successors, (1421), 973 states have internal predecessors, (1421), 277 states have call successors, (277), 51 states have call predecessors, (277), 51 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:14,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:14,998 INFO L93 Difference]: Finished difference Result 3995 states and 6578 transitions. [2021-12-14 17:36:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:15,001 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-14 17:36:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:15,030 INFO L225 Difference]: With dead ends: 3995 [2021-12-14 17:36:15,030 INFO L226 Difference]: Without dead ends: 2701 [2021-12-14 17:36:15,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:15,050 INFO L933 BasicCegarLoop]: 2382 mSDtfsCounter, 2134 mSDsluCounter, 3297 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 678 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 5679 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:15,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2291 Valid, 5679 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-12-14 17:36:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-12-14 17:36:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2534. [2021-12-14 17:36:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 1890 states have (on average 1.4804232804232804) internal successors, (2798), 1906 states have internal predecessors, (2798), 543 states have call successors, (543), 101 states have call predecessors, (543), 100 states have return successors, (534), 530 states have call predecessors, (534), 534 states have call successors, (534) [2021-12-14 17:36:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3875 transitions. [2021-12-14 17:36:15,222 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3875 transitions. Word has length 36 [2021-12-14 17:36:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:15,223 INFO L470 AbstractCegarLoop]: Abstraction has 2534 states and 3875 transitions. [2021-12-14 17:36:15,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3875 transitions. [2021-12-14 17:36:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 17:36:15,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:15,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:15,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:36:15,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:15,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:15,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1794039467, now seen corresponding path program 1 times [2021-12-14 17:36:15,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:15,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688890579] [2021-12-14 17:36:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:15,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:36:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:15,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:15,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688890579] [2021-12-14 17:36:15,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688890579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:15,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:15,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:15,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410237509] [2021-12-14 17:36:15,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:15,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:15,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:15,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:15,510 INFO L87 Difference]: Start difference. First operand 2534 states and 3875 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:17,261 INFO L93 Difference]: Finished difference Result 7872 states and 12229 transitions. [2021-12-14 17:36:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:17,261 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-14 17:36:17,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:17,287 INFO L225 Difference]: With dead ends: 7872 [2021-12-14 17:36:17,288 INFO L226 Difference]: Without dead ends: 5341 [2021-12-14 17:36:17,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:17,298 INFO L933 BasicCegarLoop]: 2238 mSDtfsCounter, 2234 mSDsluCounter, 3297 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 5535 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:17,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2405 Valid, 5535 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 17:36:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-12-14 17:36:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5026. [2021-12-14 17:36:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 3752 states have (on average 1.4797441364605544) internal successors, (5552), 3776 states have internal predecessors, (5552), 1073 states have call successors, (1073), 201 states have call predecessors, (1073), 200 states have return successors, (1064), 1056 states have call predecessors, (1064), 1064 states have call successors, (1064) [2021-12-14 17:36:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7689 transitions. [2021-12-14 17:36:17,450 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7689 transitions. Word has length 38 [2021-12-14 17:36:17,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:17,451 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 7689 transitions. [2021-12-14 17:36:17,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7689 transitions. [2021-12-14 17:36:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-14 17:36:17,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:17,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:17,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:36:17,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:17,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1767320045, now seen corresponding path program 1 times [2021-12-14 17:36:17,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:17,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169974308] [2021-12-14 17:36:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:17,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:36:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:17,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169974308] [2021-12-14 17:36:17,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169974308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:17,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:17,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:17,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893254354] [2021-12-14 17:36:17,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:17,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:17,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:17,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:17,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:17,685 INFO L87 Difference]: Start difference. First operand 5026 states and 7689 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:19,559 INFO L93 Difference]: Finished difference Result 15564 states and 24181 transitions. [2021-12-14 17:36:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:19,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-12-14 17:36:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:19,628 INFO L225 Difference]: With dead ends: 15564 [2021-12-14 17:36:19,628 INFO L226 Difference]: Without dead ends: 10541 [2021-12-14 17:36:19,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:19,663 INFO L933 BasicCegarLoop]: 2249 mSDtfsCounter, 2213 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 5611 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:19,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2373 Valid, 5611 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 17:36:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-12-14 17:36:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 9930. [2021-12-14 17:36:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9930 states, 7424 states have (on average 1.4800646551724137) internal successors, (10988), 7464 states have internal predecessors, (10988), 2105 states have call successors, (2105), 401 states have call predecessors, (2105), 400 states have return successors, (2096), 2080 states have call predecessors, (2096), 2096 states have call successors, (2096) [2021-12-14 17:36:20,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 15189 transitions. [2021-12-14 17:36:20,091 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 15189 transitions. Word has length 39 [2021-12-14 17:36:20,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:20,091 INFO L470 AbstractCegarLoop]: Abstraction has 9930 states and 15189 transitions. [2021-12-14 17:36:20,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 15189 transitions. [2021-12-14 17:36:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-14 17:36:20,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:20,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:20,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:36:20,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1333303287, now seen corresponding path program 1 times [2021-12-14 17:36:20,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:20,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255425412] [2021-12-14 17:36:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:20,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:36:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:20,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:20,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255425412] [2021-12-14 17:36:20,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255425412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:20,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:20,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:20,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035934185] [2021-12-14 17:36:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:20,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:20,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:20,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:20,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:20,323 INFO L87 Difference]: Start difference. First operand 9930 states and 15189 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:22,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:22,292 INFO L93 Difference]: Finished difference Result 30888 states and 47985 transitions. [2021-12-14 17:36:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:22,293 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-14 17:36:22,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:22,389 INFO L225 Difference]: With dead ends: 30888 [2021-12-14 17:36:22,390 INFO L226 Difference]: Without dead ends: 20961 [2021-12-14 17:36:22,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:22,421 INFO L933 BasicCegarLoop]: 2473 mSDtfsCounter, 2169 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 5982 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:22,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2343 Valid, 5982 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 17:36:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20961 states. [2021-12-14 17:36:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20961 to 19758. [2021-12-14 17:36:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19758 states, 14772 states have (on average 1.479014351475765) internal successors, (21848), 14844 states have internal predecessors, (21848), 4185 states have call successors, (4185), 801 states have call predecessors, (4185), 800 states have return successors, (4176), 4144 states have call predecessors, (4176), 4176 states have call successors, (4176) [2021-12-14 17:36:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19758 states to 19758 states and 30209 transitions. [2021-12-14 17:36:23,058 INFO L78 Accepts]: Start accepts. Automaton has 19758 states and 30209 transitions. Word has length 35 [2021-12-14 17:36:23,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:23,059 INFO L470 AbstractCegarLoop]: Abstraction has 19758 states and 30209 transitions. [2021-12-14 17:36:23,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 19758 states and 30209 transitions. [2021-12-14 17:36:23,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 17:36:23,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:23,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:23,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:36:23,062 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:23,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1420650670, now seen corresponding path program 1 times [2021-12-14 17:36:23,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:23,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100872844] [2021-12-14 17:36:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:23,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:36:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:23,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:23,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100872844] [2021-12-14 17:36:23,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100872844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:23,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:23,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:23,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790088043] [2021-12-14 17:36:23,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:23,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:23,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:23,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:23,251 INFO L87 Difference]: Start difference. First operand 19758 states and 30209 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:26,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:36:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:27,619 INFO L93 Difference]: Finished difference Result 61204 states and 95037 transitions. [2021-12-14 17:36:27,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:27,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-14 17:36:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:27,888 INFO L225 Difference]: With dead ends: 61204 [2021-12-14 17:36:27,890 INFO L226 Difference]: Without dead ends: 41449 [2021-12-14 17:36:27,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:27,955 INFO L933 BasicCegarLoop]: 2463 mSDtfsCounter, 2167 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 633 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 5998 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:27,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 5998 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 643 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-12-14 17:36:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41449 states. [2021-12-14 17:36:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41449 to 39062. [2021-12-14 17:36:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39062 states, 29244 states have (on average 1.4799617015456161) internal successors, (43280), 29380 states have internal predecessors, (43280), 8217 states have call successors, (8217), 1601 states have call predecessors, (8217), 1600 states have return successors, (8208), 8144 states have call predecessors, (8208), 8208 states have call successors, (8208) [2021-12-14 17:36:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39062 states to 39062 states and 59705 transitions. [2021-12-14 17:36:29,357 INFO L78 Accepts]: Start accepts. Automaton has 39062 states and 59705 transitions. Word has length 38 [2021-12-14 17:36:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:29,358 INFO L470 AbstractCegarLoop]: Abstraction has 39062 states and 59705 transitions. [2021-12-14 17:36:29,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 39062 states and 59705 transitions. [2021-12-14 17:36:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:36:29,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:29,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:29,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:36:29,359 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:29,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:29,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1307690219, now seen corresponding path program 1 times [2021-12-14 17:36:29,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:29,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918229418] [2021-12-14 17:36:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:29,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:36:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:29,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:29,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918229418] [2021-12-14 17:36:29,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918229418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:29,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:29,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:29,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552471279] [2021-12-14 17:36:29,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:29,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:29,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:29,536 INFO L87 Difference]: Start difference. First operand 39062 states and 59705 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:32,706 INFO L93 Difference]: Finished difference Result 121724 states and 188965 transitions. [2021-12-14 17:36:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:32,706 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-14 17:36:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:33,305 INFO L225 Difference]: With dead ends: 121724 [2021-12-14 17:36:33,305 INFO L226 Difference]: Without dead ends: 82665 [2021-12-14 17:36:33,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:33,422 INFO L933 BasicCegarLoop]: 2485 mSDtfsCounter, 2166 mSDsluCounter, 3453 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 5938 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:33,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2331 Valid, 5938 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 17:36:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82665 states. [2021-12-14 17:36:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82665 to 77910. [2021-12-14 17:36:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 58316 states have (on average 1.4791137938130188) internal successors, (86256), 58580 states have internal predecessors, (86256), 16393 states have call successors, (16393), 3201 states have call predecessors, (16393), 3200 states have return successors, (16384), 16256 states have call predecessors, (16384), 16384 states have call successors, (16384) [2021-12-14 17:36:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 119033 transitions. [2021-12-14 17:36:35,710 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 119033 transitions. Word has length 36 [2021-12-14 17:36:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:35,712 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 119033 transitions. [2021-12-14 17:36:35,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 119033 transitions. [2021-12-14 17:36:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 17:36:35,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:35,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:35,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:36:35,715 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:35,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash 978250436, now seen corresponding path program 1 times [2021-12-14 17:36:35,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:35,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936136356] [2021-12-14 17:36:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:35,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:36:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:35,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:35,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936136356] [2021-12-14 17:36:35,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936136356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:35,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:35,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:35,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271502898] [2021-12-14 17:36:35,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:35,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:35,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:35,897 INFO L87 Difference]: Start difference. First operand 77910 states and 119033 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:41,205 INFO L93 Difference]: Finished difference Result 242556 states and 376357 transitions. [2021-12-14 17:36:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:41,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2021-12-14 17:36:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:36:42,138 INFO L225 Difference]: With dead ends: 242556 [2021-12-14 17:36:42,138 INFO L226 Difference]: Without dead ends: 164649 [2021-12-14 17:36:42,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:36:42,418 INFO L933 BasicCegarLoop]: 2470 mSDtfsCounter, 2155 mSDsluCounter, 3383 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 5853 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:36:42,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 5853 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 17:36:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164649 states. [2021-12-14 17:36:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164649 to 155158. [2021-12-14 17:36:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155158 states, 116108 states have (on average 1.4779343369965894) internal successors, (171600), 116628 states have internal predecessors, (171600), 32649 states have call successors, (32649), 6401 states have call predecessors, (32649), 6400 states have return successors, (32640), 32384 states have call predecessors, (32640), 32640 states have call successors, (32640) [2021-12-14 17:36:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155158 states to 155158 states and 236889 transitions. [2021-12-14 17:36:48,132 INFO L78 Accepts]: Start accepts. Automaton has 155158 states and 236889 transitions. Word has length 34 [2021-12-14 17:36:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:36:48,133 INFO L470 AbstractCegarLoop]: Abstraction has 155158 states and 236889 transitions. [2021-12-14 17:36:48,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 155158 states and 236889 transitions. [2021-12-14 17:36:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-14 17:36:48,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:36:48,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:36:48,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:36:48,135 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:36:48,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:36:48,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1315217039, now seen corresponding path program 1 times [2021-12-14 17:36:48,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:36:48,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480513523] [2021-12-14 17:36:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:36:48,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:36:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:48,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:36:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:36:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:36:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:36:48,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:36:48,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480513523] [2021-12-14 17:36:48,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480513523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:36:48,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:36:48,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:36:48,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514264317] [2021-12-14 17:36:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:36:48,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:36:48,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:36:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:36:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:36:48,313 INFO L87 Difference]: Start difference. First operand 155158 states and 236889 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:36:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:36:56,947 INFO L93 Difference]: Finished difference Result 483132 states and 749189 transitions. [2021-12-14 17:36:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:36:56,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-12-14 17:36:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted.