./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--memstick--core--ms_block.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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--memstick--core--ms_block.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 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 15:01:15,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 15:01:15,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 15:01:15,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 15:01:15,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 15:01:15,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 15:01:15,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 15:01:15,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 15:01:15,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 15:01:15,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 15:01:15,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 15:01:15,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 15:01:15,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 15:01:15,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 15:01:15,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 15:01:15,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 15:01:15,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 15:01:15,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 15:01:15,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 15:01:15,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 15:01:15,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 15:01:15,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 15:01:15,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 15:01:15,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 15:01:15,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 15:01:15,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 15:01:15,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 15:01:15,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 15:01:15,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 15:01:15,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 15:01:15,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 15:01:15,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 15:01:15,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 15:01:15,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 15:01:15,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 15:01:15,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 15:01:15,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 15:01:15,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 15:01:15,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 15:01:15,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 15:01:15,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 15:01:15,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 15:01:15,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 15:01:15,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 15:01:15,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 15:01:15,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 15:01:15,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 15:01:15,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 15:01:15,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 15:01:15,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 15:01:15,750 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 15:01:15,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 15:01:15,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 15:01:15,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 15:01:15,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 15:01:15,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 15:01:15,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 15:01:15,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 15:01:15,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 15:01:15,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 15:01:15,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 15:01:15,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 15:01:15,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 15:01:15,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:01:15,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 15:01:15,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 15:01:15,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 15:01:15,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 15:01:15,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 15:01:15,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 15:01:15,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 15:01:15,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 15:01:15,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 15:01:15,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 [2021-12-22 15:01:15,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 15:01:15,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 15:01:15,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 15:01:15,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 15:01:15,999 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 15:01:16,001 INFO L432 ainManager$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--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-22 15:01:16,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525200896/683fce37c65b4aaba7bd6dfdb31921af/FLAGcfb6913b9 [2021-12-22 15:01:16,854 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 15:01:16,855 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--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-22 15:01:16,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525200896/683fce37c65b4aaba7bd6dfdb31921af/FLAGcfb6913b9 [2021-12-22 15:01:17,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525200896/683fce37c65b4aaba7bd6dfdb31921af [2021-12-22 15:01:17,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 15:01:17,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 15:01:17,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 15:01:17,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 15:01:17,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 15:01:17,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:01:17" (1/1) ... [2021-12-22 15:01:17,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc404fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:17, skipping insertion in model container [2021-12-22 15:01:17,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:01:17" (1/1) ... [2021-12-22 15:01:17,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 15:01:17,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 15:01:18,950 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--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2021-12-22 15:01:19,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:01:19,208 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 15:01:19,507 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--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2021-12-22 15:01:19,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:01:19,599 INFO L208 MainTranslator]: Completed translation [2021-12-22 15:01:19,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19 WrapperNode [2021-12-22 15:01:19,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 15:01:19,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 15:01:19,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 15:01:19,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 15:01:19,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:19,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:19,852 INFO L137 Inliner]: procedures = 306, calls = 1743, calls flagged for inlining = 109, calls inlined = 100, statements flattened = 3797 [2021-12-22 15:01:19,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 15:01:19,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 15:01:19,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 15:01:19,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 15:01:19,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:19,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:19,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:19,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:19,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:20,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:20,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:20,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 15:01:20,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 15:01:20,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 15:01:20,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 15:01:20,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (1/1) ... [2021-12-22 15:01:20,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:01:20,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:01:20,105 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) [2021-12-22 15:01:20,108 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 [2021-12-22 15:01:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-22 15:01:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-22 15:01:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_memstick_host [2021-12-22 15:01:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_memstick_host [2021-12-22 15:01:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-22 15:01:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-22 15:01:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 15:01:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 15:01:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 15:01:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 15:01:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure msb_stop [2021-12-22 15:01:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_stop [2021-12-22 15:01:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_pba [2021-12-22 15:01:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_pba [2021-12-22 15:01:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-22 15:01:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-22 15:01:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 15:01:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 15:01:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure blk_fetch_request [2021-12-22 15:01:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_fetch_request [2021-12-22 15:01:20,153 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-22 15:01:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-22 15:01:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-12-22 15:01:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-12-22 15:01:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 15:01:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 15:01:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 15:01:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 15:01:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure msb_switch_to_parallel [2021-12-22 15:01:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_switch_to_parallel [2021-12-22 15:01:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 15:01:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 15:01:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 15:01:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 15:01:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure msb_validate_used_block_bitmap [2021-12-22 15:01:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_validate_used_block_bitmap [2021-12-22 15:01:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 15:01:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 15:01:20,156 INFO L130 BoogieDeclarations]: Found specification of procedure msb_verify_block [2021-12-22 15:01:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_verify_block [2021-12-22 15:01:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 15:01:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 15:01:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-12-22 15:01:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-12-22 15:01:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_msb_disk_lock [2021-12-22 15:01:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_msb_disk_lock [2021-12-22 15:01:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 15:01:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_write [2021-12-22 15:01:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_write [2021-12-22 15:01:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-22 15:01:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-12-22 15:01:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-12-22 15:01:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_set_drvdata [2021-12-22 15:01:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_set_drvdata [2021-12-22 15:01:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request [2021-12-22 15:01:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request [2021-12-22 15:01:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 15:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-22 15:01:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-22 15:01:20,161 INFO L130 BoogieDeclarations]: Found specification of procedure msb_invalidate_reg_window [2021-12-22 15:01:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_invalidate_reg_window [2021-12-22 15:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure msb_io_work [2021-12-22 15:01:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_io_work [2021-12-22 15:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 15:01:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 15:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2021-12-22 15:01:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2021-12-22 15:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 15:01:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure msb_erase_block [2021-12-22 15:01:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_erase_block [2021-12-22 15:01:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 15:01:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_get_drvdata [2021-12-22 15:01:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_get_drvdata [2021-12-22 15:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure msb_data_clear [2021-12-22 15:01:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_data_clear [2021-12-22 15:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 15:01:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 15:01:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-22 15:01:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-22 15:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 15:01:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 15:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 15:01:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 15:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 15:01:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 15:01:20,165 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_bad_block_table [2021-12-22 15:01:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_bad_block_table [2021-12-22 15:01:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure msb_update_block [2021-12-22 15:01:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_update_block [2021-12-22 15:01:20,166 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_flush [2021-12-22 15:01:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_flush [2021-12-22 15:01:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2021-12-22 15:01:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2021-12-22 15:01:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-22 15:01:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-22 15:01:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2021-12-22 15:01:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2021-12-22 15:01:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure msb_run_state_machine [2021-12-22 15:01:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_run_state_machine [2021-12-22 15:01:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure msb_sg_copy [2021-12-22 15:01:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_sg_copy [2021-12-22 15:01:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-22 15:01:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-22 15:01:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 15:01:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 15:01:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_zero_bit [2021-12-22 15:01:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_zero_bit [2021-12-22 15:01:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_memstick_host [2021-12-22 15:01:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_memstick_host [2021-12-22 15:01:20,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 15:01:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-22 15:01:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-22 15:01:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_lba [2021-12-22 15:01:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_lba [2021-12-22 15:01:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure msb_reset [2021-12-22 15:01:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_reset [2021-12-22 15:01:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2021-12-22 15:01:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2021-12-22 15:01:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2021-12-22 15:01:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2021-12-22 15:01:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 15:01:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 15:01:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2021-12-22 15:01:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2021-12-22 15:01:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure msb_bd_getgeo [2021-12-22 15:01:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_bd_getgeo [2021-12-22 15:01:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 15:01:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure msb_remove [2021-12-22 15:01:20,184 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_remove [2021-12-22 15:01:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 15:01:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 15:01:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2021-12-22 15:01:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2021-12-22 15:01:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_bad [2021-12-22 15:01:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_bad [2021-12-22 15:01:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 15:01:20,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 15:01:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 15:01:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2021-12-22 15:01:20,186 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2021-12-22 15:01:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 15:01:20,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 15:01:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 15:01:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure sg_nents [2021-12-22 15:01:20,186 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_nents [2021-12-22 15:01:20,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 15:01:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_page [2021-12-22 15:01:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_page [2021-12-22 15:01:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-12-22 15:01:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-12-22 15:01:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2021-12-22 15:01:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2021-12-22 15:01:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure msb_set_overwrite_flag [2021-12-22 15:01:20,187 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_set_overwrite_flag [2021-12-22 15:01:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_bytes [2021-12-22 15:01:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_bytes [2021-12-22 15:01:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-22 15:01:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-22 15:01:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure msb_disk_release [2021-12-22 15:01:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_disk_release [2021-12-22 15:01:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_block_used [2021-12-22 15:01:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_block_used [2021-12-22 15:01:20,189 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_discard [2021-12-22 15:01:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_discard [2021-12-22 15:01:20,189 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-22 15:01:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-22 15:01:20,189 INFO L130 BoogieDeclarations]: Found specification of procedure msb_start [2021-12-22 15:01:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_start [2021-12-22 15:01:20,189 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-22 15:01:20,189 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-22 15:01:20,189 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-12-22 15:01:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-12-22 15:01:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-22 15:01:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-22 15:01:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure msb_init_card [2021-12-22 15:01:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_init_card [2021-12-22 15:01:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-12-22 15:01:20,190 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-12-22 15:01:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-22 15:01:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-22 15:01:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 15:01:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_one [2021-12-22 15:01:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_one [2021-12-22 15:01:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-22 15:01:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-22 15:01:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_msb_disk_lock [2021-12-22 15:01:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_msb_disk_lock [2021-12-22 15:01:20,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 15:01:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 15:01:20,851 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 15:01:20,854 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 15:01:21,022 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 15:01:27,910 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 15:01:27,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 15:01:27,926 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 15:01:27,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:01:27 BoogieIcfgContainer [2021-12-22 15:01:27,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 15:01:27,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 15:01:27,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 15:01:27,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 15:01:27,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:01:17" (1/3) ... [2021-12-22 15:01:27,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222c1430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:01:27, skipping insertion in model container [2021-12-22 15:01:27,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:01:19" (2/3) ... [2021-12-22 15:01:27,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222c1430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:01:27, skipping insertion in model container [2021-12-22 15:01:27,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:01:27" (3/3) ... [2021-12-22 15:01:27,939 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-22 15:01:27,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 15:01:27,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 15:01:27,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 15:01:28,006 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 [2021-12-22 15:01:28,006 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 15:01:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1031 states have (on average 1.3773035887487877) internal successors, (1420), 1075 states have internal predecessors, (1420), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) [2021-12-22 15:01:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 15:01:28,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:01:28,064 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:01:28,064 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:01:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:01:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1642665137, now seen corresponding path program 1 times [2021-12-22 15:01:28,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:01:28,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630397718] [2021-12-22 15:01:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:01:28,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:01:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:01:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:01:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 15:01:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 15:01:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 15:01:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 15:01:28,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:01:28,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630397718] [2021-12-22 15:01:28,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630397718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:01:28,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:01:28,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 15:01:28,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341184122] [2021-12-22 15:01:28,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:01:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 15:01:28,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:01:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 15:01:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 15:01:28,821 INFO L87 Difference]: Start difference. First operand has 1463 states, 1031 states have (on average 1.3773035887487877) internal successors, (1420), 1075 states have internal predecessors, (1420), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:01:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:01:34,125 INFO L93 Difference]: Finished difference Result 3235 states and 4838 transitions. [2021-12-22 15:01:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 15:01:34,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2021-12-22 15:01:34,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:01:34,173 INFO L225 Difference]: With dead ends: 3235 [2021-12-22 15:01:34,173 INFO L226 Difference]: Without dead ends: 1750 [2021-12-22 15:01:34,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:01:34,194 INFO L933 BasicCegarLoop]: 1968 mSDtfsCounter, 934 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-22 15:01:34,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 4613 Invalid, 2995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [956 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-22 15:01:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-12-22 15:01:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1438. [2021-12-22 15:01:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1014 states have (on average 1.3629191321499015) internal successors, (1382), 1050 states have internal predecessors, (1382), 337 states have call successors, (337), 87 states have call predecessors, (337), 86 states have return successors, (328), 322 states have call predecessors, (328), 328 states have call successors, (328) [2021-12-22 15:01:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2047 transitions. [2021-12-22 15:01:34,373 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2047 transitions. Word has length 84 [2021-12-22 15:01:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:01:34,374 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 2047 transitions. [2021-12-22 15:01:34,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:01:34,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2047 transitions. [2021-12-22 15:01:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 15:01:34,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:01:34,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:01:34,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 15:01:34,379 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:01:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:01:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2002176851, now seen corresponding path program 1 times [2021-12-22 15:01:34,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:01:34,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936920532] [2021-12-22 15:01:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:01:34,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:01:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:01:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:01:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 15:01:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 15:01:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 15:01:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 15:01:34,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:01:34,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936920532] [2021-12-22 15:01:34,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936920532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:01:34,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:01:34,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:01:34,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583884445] [2021-12-22 15:01:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:01:34,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:01:34,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:01:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:01:34,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:01:34,658 INFO L87 Difference]: Start difference. First operand 1438 states and 2047 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-22 15:01:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:01:41,331 INFO L93 Difference]: Finished difference Result 4860 states and 7153 transitions. [2021-12-22 15:01:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:01:41,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 84 [2021-12-22 15:01:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:01:41,359 INFO L225 Difference]: With dead ends: 4860 [2021-12-22 15:01:41,359 INFO L226 Difference]: Without dead ends: 3442 [2021-12-22 15:01:41,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:01:41,374 INFO L933 BasicCegarLoop]: 2247 mSDtfsCounter, 3696 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 2174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3956 SdHoareTripleChecker+Valid, 5969 SdHoareTripleChecker+Invalid, 4892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2174 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-22 15:01:41,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3956 Valid, 5969 Invalid, 4892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2174 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-12-22 15:01:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2021-12-22 15:01:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 2799. [2021-12-22 15:01:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 1977 states have (on average 1.3641881638846738) internal successors, (2697), 2043 states have internal predecessors, (2697), 651 states have call successors, (651), 171 states have call predecessors, (651), 170 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-22 15:01:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3990 transitions. [2021-12-22 15:01:41,579 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3990 transitions. Word has length 84 [2021-12-22 15:01:41,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:01:41,579 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 3990 transitions. [2021-12-22 15:01:41,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-22 15:01:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3990 transitions. [2021-12-22 15:01:41,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 15:01:41,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:01:41,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:01:41,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 15:01:41,588 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:01:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:01:41,588 INFO L85 PathProgramCache]: Analyzing trace with hash 21875653, now seen corresponding path program 1 times [2021-12-22 15:01:41,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:01:41,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878539420] [2021-12-22 15:01:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:01:41,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:01:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:01:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:01:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 15:01:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 15:01:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 15:01:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 15:01:41,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:01:41,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878539420] [2021-12-22 15:01:41,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878539420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:01:41,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:01:41,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:01:41,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366130001] [2021-12-22 15:01:41,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:01:41,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:01:41,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:01:41,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:01:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:01:41,876 INFO L87 Difference]: Start difference. First operand 2799 states and 3990 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:01:44,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:01:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:01:47,222 INFO L93 Difference]: Finished difference Result 3436 states and 5120 transitions. [2021-12-22 15:01:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 15:01:47,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2021-12-22 15:01:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:01:47,249 INFO L225 Difference]: With dead ends: 3436 [2021-12-22 15:01:47,249 INFO L226 Difference]: Without dead ends: 3433 [2021-12-22 15:01:47,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:01:47,254 INFO L933 BasicCegarLoop]: 1898 mSDtfsCounter, 3474 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1817 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3694 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1817 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-22 15:01:47,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3694 Valid, 2982 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1817 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-12-22 15:01:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2021-12-22 15:01:47,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 2806. [2021-12-22 15:01:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 1983 states have (on average 1.3635905194150277) internal successors, (2704), 2048 states have internal predecessors, (2704), 650 states have call successors, (650), 173 states have call predecessors, (650), 172 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-22 15:01:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3996 transitions. [2021-12-22 15:01:47,368 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3996 transitions. Word has length 87 [2021-12-22 15:01:47,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:01:47,369 INFO L470 AbstractCegarLoop]: Abstraction has 2806 states and 3996 transitions. [2021-12-22 15:01:47,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:01:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3996 transitions. [2021-12-22 15:01:47,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-22 15:01:47,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:01:47,370 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:01:47,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 15:01:47,371 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:01:47,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:01:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash 677651121, now seen corresponding path program 1 times [2021-12-22 15:01:47,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:01:47,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062750042] [2021-12-22 15:01:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:01:47,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:01:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:01:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:01:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 15:01:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 15:01:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 15:01:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 15:01:47,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:01:47,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062750042] [2021-12-22 15:01:47,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062750042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:01:47,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:01:47,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:01:47,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514431253] [2021-12-22 15:01:47,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:01:47,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:01:47,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:01:47,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:01:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:01:47,669 INFO L87 Difference]: Start difference. First operand 2806 states and 3996 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:01:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:01:51,332 INFO L93 Difference]: Finished difference Result 3435 states and 5118 transitions. [2021-12-22 15:01:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 15:01:51,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2021-12-22 15:01:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:01:51,358 INFO L225 Difference]: With dead ends: 3435 [2021-12-22 15:01:51,359 INFO L226 Difference]: Without dead ends: 3432 [2021-12-22 15:01:51,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-22 15:01:51,364 INFO L933 BasicCegarLoop]: 1891 mSDtfsCounter, 2895 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 1282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3119 SdHoareTripleChecker+Valid, 3830 SdHoareTripleChecker+Invalid, 2764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1282 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-22 15:01:51,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3119 Valid, 3830 Invalid, 2764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1282 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-22 15:01:51,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2021-12-22 15:01:51,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2805. [2021-12-22 15:01:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 1983 states have (on average 1.3630862329803328) internal successors, (2703), 2047 states have internal predecessors, (2703), 649 states have call successors, (649), 173 states have call predecessors, (649), 172 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-22 15:01:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3994 transitions. [2021-12-22 15:01:51,493 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3994 transitions. Word has length 88 [2021-12-22 15:01:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:01:51,494 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3994 transitions. [2021-12-22 15:01:51,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:01:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3994 transitions. [2021-12-22 15:01:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-22 15:01:51,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:01:51,498 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:01:51,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 15:01:51,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:01:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:01:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash -468140984, now seen corresponding path program 1 times [2021-12-22 15:01:51,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:01:51,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797724936] [2021-12-22 15:01:51,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:01:51,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:01:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:01:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:01:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 15:01:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 15:01:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 15:01:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 15:01:51,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:01:51,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797724936] [2021-12-22 15:01:51,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797724936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:01:51,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:01:51,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:01:51,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032110814] [2021-12-22 15:01:51,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:01:51,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:01:51,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:01:51,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:01:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:01:51,738 INFO L87 Difference]: Start difference. First operand 2805 states and 3994 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:01:55,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:01:55,770 INFO L93 Difference]: Finished difference Result 4934 states and 7249 transitions. [2021-12-22 15:01:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:01:55,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2021-12-22 15:01:55,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:01:55,806 INFO L225 Difference]: With dead ends: 4934 [2021-12-22 15:01:55,807 INFO L226 Difference]: Without dead ends: 4930 [2021-12-22 15:01:55,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:01:55,812 INFO L933 BasicCegarLoop]: 2420 mSDtfsCounter, 3967 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 2095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2095 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-22 15:01:55,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4200 Valid, 4461 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2095 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-22 15:01:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4930 states. [2021-12-22 15:01:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4930 to 4085. [2021-12-22 15:01:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 2883 states have (on average 1.353451266042317) internal successors, (3902), 2967 states have internal predecessors, (3902), 923 states have call successors, (923), 279 states have call predecessors, (923), 278 states have return successors, (918), 898 states have call predecessors, (918), 918 states have call successors, (918) [2021-12-22 15:01:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 5743 transitions. [2021-12-22 15:01:56,026 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 5743 transitions. Word has length 89 [2021-12-22 15:01:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:01:56,027 INFO L470 AbstractCegarLoop]: Abstraction has 4085 states and 5743 transitions. [2021-12-22 15:01:56,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:01:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 5743 transitions. [2021-12-22 15:01:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 15:01:56,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:01:56,052 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:01:56,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 15:01:56,055 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:01:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:01:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1627953004, now seen corresponding path program 1 times [2021-12-22 15:01:56,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:01:56,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542357877] [2021-12-22 15:01:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:01:56,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:01:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:01:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:01:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:01:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 15:01:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 15:01:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 15:01:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:01:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:01:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 15:01:56,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:01:56,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542357877] [2021-12-22 15:01:56,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542357877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:01:56,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:01:56,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:01:56,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389149447] [2021-12-22 15:01:56,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:01:56,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:01:56,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:01:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:01:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:01:56,280 INFO L87 Difference]: Start difference. First operand 4085 states and 5743 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, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:02:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:02:00,201 INFO L93 Difference]: Finished difference Result 4966 states and 7280 transitions. [2021-12-22 15:02:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:02:00,202 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, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2021-12-22 15:02:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:02:00,234 INFO L225 Difference]: With dead ends: 4966 [2021-12-22 15:02:00,234 INFO L226 Difference]: Without dead ends: 4962 [2021-12-22 15:02:00,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:02:00,240 INFO L933 BasicCegarLoop]: 1892 mSDtfsCounter, 2848 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 1278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 4528 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1278 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-22 15:02:00,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3051 Valid, 4528 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1278 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-22 15:02:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2021-12-22 15:02:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4117. [2021-12-22 15:02:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4117 states, 2903 states have (on average 1.3499827764381673) internal successors, (3919), 2985 states have internal predecessors, (3919), 929 states have call successors, (929), 285 states have call predecessors, (929), 284 states have return successors, (926), 906 states have call predecessors, (926), 926 states have call successors, (926) [2021-12-22 15:02:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 5774 transitions. [2021-12-22 15:02:00,486 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 5774 transitions. Word has length 90 [2021-12-22 15:02:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:02:00,486 INFO L470 AbstractCegarLoop]: Abstraction has 4117 states and 5774 transitions. [2021-12-22 15:02:00,487 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, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:02:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 5774 transitions. [2021-12-22 15:02:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 15:02:00,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:02:00,488 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:02:00,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 15:02:00,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:02:00,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:02:00,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1072584907, now seen corresponding path program 1 times [2021-12-22 15:02:00,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:02:00,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167337597] [2021-12-22 15:02:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:02:00,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:02:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:02:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:02:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:02:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:02:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 15:02:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 15:02:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 15:02:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 15:02:00,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:02:00,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167337597] [2021-12-22 15:02:00,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167337597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:02:00,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:02:00,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:02:00,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418163327] [2021-12-22 15:02:00,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:02:00,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:02:00,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:02:00,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:02:00,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:02:00,675 INFO L87 Difference]: Start difference. First operand 4117 states and 5774 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, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:02:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:02:03,543 INFO L93 Difference]: Finished difference Result 4962 states and 7274 transitions. [2021-12-22 15:02:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 15:02:03,544 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, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2021-12-22 15:02:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:02:03,586 INFO L225 Difference]: With dead ends: 4962 [2021-12-22 15:02:03,586 INFO L226 Difference]: Without dead ends: 4946 [2021-12-22 15:02:03,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-22 15:02:03,595 INFO L933 BasicCegarLoop]: 1887 mSDtfsCounter, 3453 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 1794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3672 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1794 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-22 15:02:03,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3672 Valid, 2960 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1794 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-22 15:02:03,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-12-22 15:02:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4103. [2021-12-22 15:02:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 2892 states have (on average 1.3499308437067774) internal successors, (3904), 2972 states have internal predecessors, (3904), 926 states have call successors, (926), 285 states have call predecessors, (926), 284 states have return successors, (924), 905 states have call predecessors, (924), 924 states have call successors, (924) [2021-12-22 15:02:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5754 transitions. [2021-12-22 15:02:03,854 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5754 transitions. Word has length 91 [2021-12-22 15:02:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:02:03,854 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5754 transitions. [2021-12-22 15:02:03,855 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, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 15:02:03,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5754 transitions. [2021-12-22 15:02:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-22 15:02:03,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:02:03,866 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 15:02:03,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 15:02:03,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:02:03,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:02:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2051341802, now seen corresponding path program 1 times [2021-12-22 15:02:03,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:02:03,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663212569] [2021-12-22 15:02:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:02:03,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:02:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:02:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:02:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:02:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:02:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 15:02:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 15:02:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 15:02:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 15:02:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:02:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 15:02:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:02:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:02:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 15:02:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 15:02:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:02:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-22 15:02:04,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:02:04,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663212569] [2021-12-22 15:02:04,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663212569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:02:04,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:02:04,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 15:02:04,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673472436] [2021-12-22 15:02:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:02:04,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 15:02:04,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:02:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 15:02:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 15:02:04,149 INFO L87 Difference]: Start difference. First operand 4103 states and 5754 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)