./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.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 5c2ae4f9e22cc68a37a2a30aa0a104b47e23e2c796ef551349d7d369f3cb3d78 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:06:40,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:06:40,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:06:40,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:06:40,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:06:40,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:06:40,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:06:40,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:06:40,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:06:40,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:06:40,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:06:40,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:06:40,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:06:40,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:06:40,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:06:40,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:06:40,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:06:40,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:06:40,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:06:40,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:06:40,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:06:40,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:06:40,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:06:40,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:06:40,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:06:40,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:06:40,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:06:40,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:06:40,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:06:40,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:06:40,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:06:40,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:06:40,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:06:40,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:06:40,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:06:40,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:06:40,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:06:40,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:06:40,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:06:40,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:06:40,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:06:40,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:06:40,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:06:40,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:06:40,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:06:40,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:06:40,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:06:40,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:06:40,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:06:40,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:06:40,553 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:06:40,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:06:40,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:06:40,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:06:40,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:06:40,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:06:40,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:06:40,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:06:40,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:06:40,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:06:40,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:06:40,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:06:40,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:06:40,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:06:40,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:06:40,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:06:40,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:06:40,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:06:40,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:06:40,558 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:06:40,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:06:40,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:06:40,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:06:40,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c2ae4f9e22cc68a37a2a30aa0a104b47e23e2c796ef551349d7d369f3cb3d78 [2021-12-14 18:06:40,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:06:40,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:06:40,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:06:40,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:06:40,834 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:06:40,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i [2021-12-14 18:06:40,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef332cc1/f85ab04e71b7403d871a553a55eeec5a/FLAG645b03871 [2021-12-14 18:06:41,554 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:06:41,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i [2021-12-14 18:06:41,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef332cc1/f85ab04e71b7403d871a553a55eeec5a/FLAG645b03871 [2021-12-14 18:06:41,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef332cc1/f85ab04e71b7403d871a553a55eeec5a [2021-12-14 18:06:41,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:06:41,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:06:41,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:06:41,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:06:41,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:06:41,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:06:41" (1/1) ... [2021-12-14 18:06:41,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dfd24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:41, skipping insertion in model container [2021-12-14 18:06:41,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:06:41" (1/1) ... [2021-12-14 18:06:41,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:06:41,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:06:42,910 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i[239090,239103] [2021-12-14 18:06:43,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:06:43,174 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:06:43,418 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i[239090,239103] [2021-12-14 18:06:43,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:06:43,558 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:06:43,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43 WrapperNode [2021-12-14 18:06:43,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:06:43,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:06:43,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:06:43,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:06:43,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,720 INFO L137 Inliner]: procedures = 170, calls = 847, calls flagged for inlining = 47, calls inlined = 39, statements flattened = 1558 [2021-12-14 18:06:43,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:06:43,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:06:43,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:06:43,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:06:43,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:06:43,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:06:43,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:06:43,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:06:43,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (1/1) ... [2021-12-14 18:06:43,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:06:43,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:06:43,910 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 18:06:43,932 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 18:06:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:06:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure opera1_power_ctrl [2021-12-14 18:06:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure opera1_power_ctrl [2021-12-14 18:06:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:06:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:06:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:06:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:06:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:06:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:06:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:06:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 18:06:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 18:06:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure stv0299_writereg [2021-12-14 18:06:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0299_writereg [2021-12-14 18:06:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:06:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:06:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i2c_mutex_of_dvb_usb_device [2021-12-14 18:06:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i2c_mutex_of_dvb_usb_device [2021-12-14 18:06:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:06:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:06:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:06:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 18:06:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 18:06:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:06:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:06:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure opera1_xilinx_rw [2021-12-14 18:06:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure opera1_xilinx_rw [2021-12-14 18:06:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-14 18:06:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-14 18:06:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:06:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:06:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:06:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:06:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_dvb_usb_device [2021-12-14 18:06:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_dvb_usb_device [2021-12-14 18:06:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:06:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure opera1_rc_query [2021-12-14 18:06:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure opera1_rc_query [2021-12-14 18:06:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:06:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:06:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:06:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-14 18:06:43,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-14 18:06:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:06:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:06:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:06:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-14 18:06:43,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-14 18:06:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-14 18:06:43,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-14 18:06:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:06:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:06:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure opera1_i2c_xfer [2021-12-14 18:06:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure opera1_i2c_xfer [2021-12-14 18:06:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 18:06:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 18:06:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-14 18:06:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-14 18:06:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:06:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-14 18:06:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-14 18:06:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:06:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:06:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:06:44,435 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:06:44,438 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:06:44,775 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:06:52,798 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:06:52,807 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:06:52,810 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:06:52,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:06:52 BoogieIcfgContainer [2021-12-14 18:06:52,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:06:52,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:06:52,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:06:52,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:06:52,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:06:41" (1/3) ... [2021-12-14 18:06:52,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cef0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:06:52, skipping insertion in model container [2021-12-14 18:06:52,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:06:43" (2/3) ... [2021-12-14 18:06:52,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cef0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:06:52, skipping insertion in model container [2021-12-14 18:06:52,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:06:52" (3/3) ... [2021-12-14 18:06:52,822 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--dvb-usb--dvb-usb-opera.ko-entry_point.cil.out.i [2021-12-14 18:06:52,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:06:52,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:06:52,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:06:52,892 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 18:06:52,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:06:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 383 states, 284 states have (on average 1.4014084507042253) internal successors, (398), 300 states have internal predecessors, (398), 74 states have call successors, (74), 24 states have call predecessors, (74), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-14 18:06:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-14 18:06:52,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:06:52,949 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:52,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:06:52,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:06:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2016544780, now seen corresponding path program 1 times [2021-12-14 18:06:52,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:06:52,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129486738] [2021-12-14 18:06:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:06:52,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:06:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:06:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:06:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:06:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:06:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:06:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:06:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:54,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:54,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:06:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:06:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:06:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:06:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-14 18:06:54,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:06:54,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129486738] [2021-12-14 18:06:54,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129486738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:06:54,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:06:54,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:06:54,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517463625] [2021-12-14 18:06:54,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:06:54,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:06:54,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:06:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:06:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:06:54,166 INFO L87 Difference]: Start difference. First operand has 383 states, 284 states have (on average 1.4014084507042253) internal successors, (398), 300 states have internal predecessors, (398), 74 states have call successors, (74), 24 states have call predecessors, (74), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 18:06:56,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:06:58,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:06:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:06:59,310 INFO L93 Difference]: Finished difference Result 891 states and 1347 transitions. [2021-12-14 18:06:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:06:59,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 141 [2021-12-14 18:06:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:06:59,325 INFO L225 Difference]: With dead ends: 891 [2021-12-14 18:06:59,325 INFO L226 Difference]: Without dead ends: 500 [2021-12-14 18:06:59,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:06:59,333 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 307 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 235 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:06:59,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 1179 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 264 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2021-12-14 18:06:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-14 18:06:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 370. [2021-12-14 18:06:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 279 states have (on average 1.3727598566308243) internal successors, (383), 287 states have internal predecessors, (383), 68 states have call successors, (68), 23 states have call predecessors, (68), 22 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-14 18:06:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 510 transitions. [2021-12-14 18:06:59,435 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 510 transitions. Word has length 141 [2021-12-14 18:06:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:06:59,436 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 510 transitions. [2021-12-14 18:06:59,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 18:06:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 510 transitions. [2021-12-14 18:06:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-14 18:06:59,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:06:59,449 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:59,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:06:59,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:06:59,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:06:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash -892191384, now seen corresponding path program 1 times [2021-12-14 18:06:59,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:06:59,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192239302] [2021-12-14 18:06:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:06:59,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:06:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:06:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:06:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:06:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:06:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:06:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:06:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:06:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:06:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:06:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:06:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:06:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:06:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:06:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-14 18:07:00,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:00,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192239302] [2021-12-14 18:07:00,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192239302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:00,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:00,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:00,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928228789] [2021-12-14 18:07:00,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:00,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:00,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:00,018 INFO L87 Difference]: Start difference. First operand 370 states and 510 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-14 18:07:02,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:04,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:05,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:07:05,591 INFO L93 Difference]: Finished difference Result 1283 states and 1861 transitions. [2021-12-14 18:07:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:07:05,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 141 [2021-12-14 18:07:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:07:05,600 INFO L225 Difference]: With dead ends: 1283 [2021-12-14 18:07:05,600 INFO L226 Difference]: Without dead ends: 941 [2021-12-14 18:07:05,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:07:05,603 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1481 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 737 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-14 18:07:05,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1337 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 378 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2021-12-14 18:07:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-12-14 18:07:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 679. [2021-12-14 18:07:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 521 states have (on average 1.381957773512476) internal successors, (720), 529 states have internal predecessors, (720), 114 states have call successors, (114), 44 states have call predecessors, (114), 43 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-14 18:07:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 939 transitions. [2021-12-14 18:07:05,649 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 939 transitions. Word has length 141 [2021-12-14 18:07:05,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:07:05,650 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 939 transitions. [2021-12-14 18:07:05,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-14 18:07:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 939 transitions. [2021-12-14 18:07:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 18:07:05,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:05,653 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:05,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:07:05,653 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:05,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1814063057, now seen corresponding path program 1 times [2021-12-14 18:07:05,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:05,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990396312] [2021-12-14 18:07:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:05,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:05,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:05,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:07:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:07:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:07:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:07:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:07:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:07:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:07:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:07:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:07:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 18:07:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-14 18:07:06,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:06,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990396312] [2021-12-14 18:07:06,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990396312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:06,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:06,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:06,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495092223] [2021-12-14 18:07:06,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:06,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:06,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:06,242 INFO L87 Difference]: Start difference. First operand 679 states and 939 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:08,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:07:09,872 INFO L93 Difference]: Finished difference Result 2463 states and 3575 transitions. [2021-12-14 18:07:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:07:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 145 [2021-12-14 18:07:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:07:09,891 INFO L225 Difference]: With dead ends: 2463 [2021-12-14 18:07:09,891 INFO L226 Difference]: Without dead ends: 1812 [2021-12-14 18:07:09,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:07:09,900 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1496 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 748 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-14 18:07:09,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1359 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 384 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-12-14 18:07:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-12-14 18:07:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1286. [2021-12-14 18:07:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 994 states have (on average 1.3843058350100603) internal successors, (1376), 1003 states have internal predecessors, (1376), 206 states have call successors, (206), 86 states have call predecessors, (206), 85 states have return successors, (197), 196 states have call predecessors, (197), 197 states have call successors, (197) [2021-12-14 18:07:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1779 transitions. [2021-12-14 18:07:09,994 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1779 transitions. Word has length 145 [2021-12-14 18:07:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:07:09,996 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 1779 transitions. [2021-12-14 18:07:09,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1779 transitions. [2021-12-14 18:07:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 18:07:09,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:09,998 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:09,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:07:09,999 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1455791905, now seen corresponding path program 1 times [2021-12-14 18:07:09,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:10,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931086994] [2021-12-14 18:07:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:10,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:07:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:07:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:07:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:07:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:07:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:07:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:07:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:07:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:07:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 18:07:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-14 18:07:10,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:10,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931086994] [2021-12-14 18:07:10,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931086994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:10,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:10,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:10,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782943340] [2021-12-14 18:07:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:10,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:10,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:10,509 INFO L87 Difference]: Start difference. First operand 1286 states and 1779 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:12,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:07:14,239 INFO L93 Difference]: Finished difference Result 4432 states and 6441 transitions. [2021-12-14 18:07:14,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:07:14,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 151 [2021-12-14 18:07:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:07:14,263 INFO L225 Difference]: With dead ends: 4432 [2021-12-14 18:07:14,263 INFO L226 Difference]: Without dead ends: 3174 [2021-12-14 18:07:14,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:07:14,271 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 1190 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 651 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-14 18:07:14,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 1523 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 388 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-12-14 18:07:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2021-12-14 18:07:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2292. [2021-12-14 18:07:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 1788 states have (on average 1.3937360178970917) internal successors, (2492), 1799 states have internal predecessors, (2492), 350 states have call successors, (350), 154 states have call predecessors, (350), 153 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2021-12-14 18:07:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3183 transitions. [2021-12-14 18:07:14,391 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3183 transitions. Word has length 151 [2021-12-14 18:07:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:07:14,392 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 3183 transitions. [2021-12-14 18:07:14,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3183 transitions. [2021-12-14 18:07:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-14 18:07:14,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:14,395 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:14,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:07:14,395 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:14,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1603423522, now seen corresponding path program 1 times [2021-12-14 18:07:14,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:14,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566568965] [2021-12-14 18:07:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:14,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:07:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:07:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:07:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:07:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:07:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:07:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:07:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:07:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:15,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:07:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 18:07:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:15,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-14 18:07:15,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:15,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566568965] [2021-12-14 18:07:15,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566568965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:15,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:15,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:15,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544251842] [2021-12-14 18:07:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:15,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:15,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:15,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:15,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:15,065 INFO L87 Difference]: Start difference. First operand 2292 states and 3183 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:17,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:19,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:21,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:23,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:07:23,341 INFO L93 Difference]: Finished difference Result 8426 states and 12428 transitions. [2021-12-14 18:07:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:07:23,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 161 [2021-12-14 18:07:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:07:23,390 INFO L225 Difference]: With dead ends: 8426 [2021-12-14 18:07:23,391 INFO L226 Difference]: Without dead ends: 6162 [2021-12-14 18:07:23,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:07:23,408 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 983 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 453 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:07:23,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 2042 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 607 Invalid, 3 Unknown, 0 Unchecked, 7.9s Time] [2021-12-14 18:07:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2021-12-14 18:07:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 4473. [2021-12-14 18:07:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4473 states, 3509 states have (on average 1.3946993445426048) internal successors, (4894), 3523 states have internal predecessors, (4894), 664 states have call successors, (664), 301 states have call predecessors, (664), 299 states have return successors, (710), 648 states have call predecessors, (710), 654 states have call successors, (710) [2021-12-14 18:07:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 6268 transitions. [2021-12-14 18:07:23,698 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 6268 transitions. Word has length 161 [2021-12-14 18:07:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:07:23,699 INFO L470 AbstractCegarLoop]: Abstraction has 4473 states and 6268 transitions. [2021-12-14 18:07:23,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 6268 transitions. [2021-12-14 18:07:23,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-14 18:07:23,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:23,703 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:23,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:07:23,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:23,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1833539704, now seen corresponding path program 1 times [2021-12-14 18:07:23,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:23,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029523679] [2021-12-14 18:07:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:23,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:23,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:07:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:23,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:07:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:07:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:07:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:07:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:07:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:07:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:07:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:07:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 18:07:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-14 18:07:24,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:24,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029523679] [2021-12-14 18:07:24,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029523679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:24,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:24,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:24,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793613434] [2021-12-14 18:07:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:24,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:24,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:24,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:24,255 INFO L87 Difference]: Start difference. First operand 4473 states and 6268 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:26,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:07:27,380 INFO L93 Difference]: Finished difference Result 6117 states and 9151 transitions. [2021-12-14 18:07:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:07:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 162 [2021-12-14 18:07:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:07:27,418 INFO L225 Difference]: With dead ends: 6117 [2021-12-14 18:07:27,418 INFO L226 Difference]: Without dead ends: 6114 [2021-12-14 18:07:27,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:07:27,425 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 1008 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 424 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:07:27,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 857 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 178 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-12-14 18:07:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2021-12-14 18:07:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 4472. [2021-12-14 18:07:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 3509 states have (on average 1.3944143630664008) internal successors, (4893), 3522 states have internal predecessors, (4893), 663 states have call successors, (663), 301 states have call predecessors, (663), 299 states have return successors, (710), 648 states have call predecessors, (710), 654 states have call successors, (710) [2021-12-14 18:07:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6266 transitions. [2021-12-14 18:07:27,637 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6266 transitions. Word has length 162 [2021-12-14 18:07:27,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:07:27,638 INFO L470 AbstractCegarLoop]: Abstraction has 4472 states and 6266 transitions. [2021-12-14 18:07:27,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:27,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6266 transitions. [2021-12-14 18:07:27,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-14 18:07:27,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:27,642 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:27,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 18:07:27,642 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1005212443, now seen corresponding path program 1 times [2021-12-14 18:07:27,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:27,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286027957] [2021-12-14 18:07:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:27,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:07:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:07:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:07:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:07:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:07:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:07:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:07:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:07:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:07:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 18:07:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-14 18:07:28,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:28,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286027957] [2021-12-14 18:07:28,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286027957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:28,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:28,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:28,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040714847] [2021-12-14 18:07:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:28,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:28,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:28,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:28,142 INFO L87 Difference]: Start difference. First operand 4472 states and 6266 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:30,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:07:31,265 INFO L93 Difference]: Finished difference Result 6116 states and 9149 transitions. [2021-12-14 18:07:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:07:31,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 163 [2021-12-14 18:07:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:07:31,307 INFO L225 Difference]: With dead ends: 6116 [2021-12-14 18:07:31,307 INFO L226 Difference]: Without dead ends: 6113 [2021-12-14 18:07:31,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:07:31,315 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 931 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 343 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:07:31,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 1055 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 253 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-12-14 18:07:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6113 states. [2021-12-14 18:07:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6113 to 4471. [2021-12-14 18:07:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4471 states, 3509 states have (on average 1.3941293815901967) internal successors, (4892), 3521 states have internal predecessors, (4892), 662 states have call successors, (662), 301 states have call predecessors, (662), 299 states have return successors, (710), 648 states have call predecessors, (710), 654 states have call successors, (710) [2021-12-14 18:07:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4471 states to 4471 states and 6264 transitions. [2021-12-14 18:07:31,546 INFO L78 Accepts]: Start accepts. Automaton has 4471 states and 6264 transitions. Word has length 163 [2021-12-14 18:07:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:07:31,550 INFO L470 AbstractCegarLoop]: Abstraction has 4471 states and 6264 transitions. [2021-12-14 18:07:31,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4471 states and 6264 transitions. [2021-12-14 18:07:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-14 18:07:31,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:31,553 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:31,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 18:07:31,553 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:31,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1096866261, now seen corresponding path program 1 times [2021-12-14 18:07:31,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:31,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221523888] [2021-12-14 18:07:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:31,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:07:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:07:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:07:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:07:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:07:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:07:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:07:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:32,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:07:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:07:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 18:07:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-14 18:07:32,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:32,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221523888] [2021-12-14 18:07:32,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221523888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:32,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:32,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:32,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143240098] [2021-12-14 18:07:32,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:32,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:32,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:32,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:32,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:32,100 INFO L87 Difference]: Start difference. First operand 4471 states and 6264 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:34,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:07:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:07:35,388 INFO L93 Difference]: Finished difference Result 6115 states and 9147 transitions. [2021-12-14 18:07:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:07:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 164 [2021-12-14 18:07:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:07:35,441 INFO L225 Difference]: With dead ends: 6115 [2021-12-14 18:07:35,441 INFO L226 Difference]: Without dead ends: 6112 [2021-12-14 18:07:35,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:07:35,449 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 896 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 328 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:07:35,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [930 Valid, 1071 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 266 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-12-14 18:07:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2021-12-14 18:07:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 4470. [2021-12-14 18:07:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3509 states have (on average 1.3938444001139927) internal successors, (4891), 3520 states have internal predecessors, (4891), 661 states have call successors, (661), 301 states have call predecessors, (661), 299 states have return successors, (710), 648 states have call predecessors, (710), 654 states have call successors, (710) [2021-12-14 18:07:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6262 transitions. [2021-12-14 18:07:35,751 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6262 transitions. Word has length 164 [2021-12-14 18:07:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:07:35,752 INFO L470 AbstractCegarLoop]: Abstraction has 4470 states and 6262 transitions. [2021-12-14 18:07:35,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:07:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6262 transitions. [2021-12-14 18:07:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-14 18:07:35,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:07:35,755 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:35,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 18:07:35,755 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:07:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:07:35,756 INFO L85 PathProgramCache]: Analyzing trace with hash 356837544, now seen corresponding path program 1 times [2021-12-14 18:07:35,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:07:35,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253932849] [2021-12-14 18:07:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:07:35,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:07:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:35,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:07:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:35,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:07:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:07:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:07:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:07:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:07:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:07:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:07:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:07:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 18:07:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 18:07:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:07:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:07:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:07:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-12-14 18:07:36,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:07:36,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253932849] [2021-12-14 18:07:36,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253932849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:07:36,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:07:36,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:07:36,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597208424] [2021-12-14 18:07:36,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:07:36,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:07:36,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:07:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:07:36,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:07:36,299 INFO L87 Difference]: Start difference. First operand 4470 states and 6262 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)