./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.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 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:14:57,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:14:57,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:14:57,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:14:57,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:14:57,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:14:57,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:14:57,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:14:57,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:14:57,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:14:57,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:14:57,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:14:57,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:14:57,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:14:57,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:14:57,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:14:57,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:14:57,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:14:57,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:14:57,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:14:57,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:14:57,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:14:57,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:14:57,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:14:57,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:14:57,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:14:57,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:14:57,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:14:57,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:14:57,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:14:57,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:14:57,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:14:57,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:14:57,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:14:57,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:14:57,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:14:57,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:14:57,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:14:57,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:14:57,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:14:57,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:14:57,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:14:57,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:14:57,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:14:57,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:14:57,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:14:57,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:14:57,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:14:57,645 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:14:57,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:14:57,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:14:57,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:14:57,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:14:57,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:14:57,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:14:57,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:14:57,646 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:14:57,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:14:57,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:14:57,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:14:57,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:14:57,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:14:57,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:14:57,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:14:57,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:14:57,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:14:57,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:14:57,648 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:14:57,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:14:57,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:14:57,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:14:57,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 [2021-11-07 17:14:57,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:14:57,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:14:57,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:14:57,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:14:57,899 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:14:57,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-07 17:14:57,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88cae02e/5142a2feea4d44ad86db312cdab4e17e/FLAGb3929e357 [2021-11-07 17:14:58,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:14:58,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-07 17:14:58,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88cae02e/5142a2feea4d44ad86db312cdab4e17e/FLAGb3929e357 [2021-11-07 17:14:58,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88cae02e/5142a2feea4d44ad86db312cdab4e17e [2021-11-07 17:14:58,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:14:58,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:14:58,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:14:58,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:14:58,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:14:58,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:14:58" (1/1) ... [2021-11-07 17:14:58,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16694adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:14:58, skipping insertion in model container [2021-11-07 17:14:58,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:14:58" (1/1) ... [2021-11-07 17:14:58,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:14:59,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:15:01,578 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-07 17:15:01,581 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-07 17:15:01,581 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-07 17:15:01,582 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-07 17:15:01,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:15:01,645 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:15:01,971 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-07 17:15:01,972 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-07 17:15:01,972 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-07 17:15:01,972 WARN L228 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-07 17:15:01,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:15:02,122 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:15:02,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02 WrapperNode [2021-11-07 17:15:02,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:15:02,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:15:02,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:15:02,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:15:02,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:02,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:05,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:15:05,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:15:05,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:15:05,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:15:05,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:05,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:06,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:06,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:07,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:08,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:08,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:09,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:15:09,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:15:09,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:15:09,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:15:09,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (1/1) ... [2021-11-07 17:15:09,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:15:09,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:15:09,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 17:15:09,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 17:15:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 17:15:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:15:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:15:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:15:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:15:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:15:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-07 17:15:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:15:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 17:15:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:15:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:15:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:15:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:15:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:15:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:15:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:15:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:15:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:15:09,213 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 17:18:55,791 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:18:55,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:18:55,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 17:18:55,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:18:55,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-07 17:18:55,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 17:18:55,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-07 17:18:55,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-07 17:18:55,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-07 17:18:55,793 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:18:55,793 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-07 17:18:55,794 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 17:18:55,796 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:18:55,799 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:18:55,805 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-07 17:18:55,805 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 17:18:56,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:18:56,012 INFO L299 CfgBuilder]: Removed 27571 assume(true) statements. [2021-11-07 17:18:56,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:18:56 BoogieIcfgContainer [2021-11-07 17:18:56,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:18:56,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:18:56,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:18:56,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:18:56,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:14:58" (1/3) ... [2021-11-07 17:18:56,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8b181e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:18:56, skipping insertion in model container [2021-11-07 17:18:56,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:02" (2/3) ... [2021-11-07 17:18:56,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8b181e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:18:56, skipping insertion in model container [2021-11-07 17:18:56,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:18:56" (3/3) ... [2021-11-07 17:18:56,045 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-07 17:18:56,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:18:56,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 429 error locations. [2021-11-07 17:18:56,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:18:56,155 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 17:18:56,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 429 error locations. [2021-11-07 17:18:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 28332 states, 27903 states have (on average 1.4298820915313766) internal successors, (39898), 28331 states have internal predecessors, (39898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:18:56,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 17:18:56,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:18:56,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:18:56,456 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 426 more)] === [2021-11-07 17:18:56,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:18:56,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1395084419, now seen corresponding path program 1 times [2021-11-07 17:18:56,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:18:56,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806494207] [2021-11-07 17:18:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:18:56,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:18:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:18:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:18:57,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:18:57,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806494207] [2021-11-07 17:18:57,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806494207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:18:57,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:18:57,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:18:57,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401221089] [2021-11-07 17:18:57,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:18:57,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:18:57,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:18:57,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:18:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:18:57,287 INFO L87 Difference]: Start difference. First operand has 28332 states, 27903 states have (on average 1.4298820915313766) internal successors, (39898), 28331 states have internal predecessors, (39898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:18:59,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:19:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:19:01,196 INFO L93 Difference]: Finished difference Result 80903 states and 114331 transitions. [2021-11-07 17:19:01,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:19:01,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-07 17:19:01,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:19:01,428 INFO L225 Difference]: With dead ends: 80903 [2021-11-07 17:19:01,429 INFO L226 Difference]: Without dead ends: 52242 [2021-11-07 17:19:01,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:01,508 INFO L933 BasicCegarLoop]: 33410 mSDtfsCounter, 32658 mSDsluCounter, 33312 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2279.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32658 SdHoareTripleChecker+Valid, 66722 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 123.07ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2436.97ms IncrementalHoareTripleChecker+Time [2021-11-07 17:19:01,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32658 Valid, 66722 Invalid, 54 Unknown, 0 Unchecked, 123.07ms Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 2436.97ms Time] [2021-11-07 17:19:01,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52242 states. [2021-11-07 17:19:02,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52242 to 51414. [2021-11-07 17:19:02,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51414 states, 50985 states have (on average 1.256389134059037) internal successors, (64057), 51413 states have internal predecessors, (64057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51414 states to 51414 states and 64057 transitions. [2021-11-07 17:19:02,967 INFO L78 Accepts]: Start accepts. Automaton has 51414 states and 64057 transitions. Word has length 155 [2021-11-07 17:19:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:19:02,970 INFO L470 AbstractCegarLoop]: Abstraction has 51414 states and 64057 transitions. [2021-11-07 17:19:02,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 51414 states and 64057 transitions. [2021-11-07 17:19:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 17:19:02,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:19:02,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:19:02,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:19:02,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr150ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 426 more)] === [2021-11-07 17:19:02,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:19:02,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1058903576, now seen corresponding path program 1 times [2021-11-07 17:19:02,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:19:02,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886965816] [2021-11-07 17:19:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:19:02,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:19:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:19:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:19:03,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:19:03,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886965816] [2021-11-07 17:19:03,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886965816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:19:03,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:19:03,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:19:03,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537039501] [2021-11-07 17:19:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:19:03,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:19:03,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:19:03,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:19:03,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:03,629 INFO L87 Difference]: Start difference. First operand 51414 states and 64057 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:05,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:19:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:19:07,472 INFO L93 Difference]: Finished difference Result 109290 states and 135828 transitions. [2021-11-07 17:19:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:19:07,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-07 17:19:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:19:07,622 INFO L225 Difference]: With dead ends: 109290 [2021-11-07 17:19:07,622 INFO L226 Difference]: Without dead ends: 58232 [2021-11-07 17:19:07,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:07,704 INFO L933 BasicCegarLoop]: 32518 mSDtfsCounter, 20028 mSDsluCounter, 32465 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2561.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20028 SdHoareTripleChecker+Valid, 64983 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.17ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2716.66ms IncrementalHoareTripleChecker+Time [2021-11-07 17:19:07,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20028 Valid, 64983 Invalid, 98 Unknown, 0 Unchecked, 49.17ms Time], IncrementalHoareTripleChecker [17 Valid, 80 Invalid, 1 Unknown, 0 Unchecked, 2716.66ms Time] [2021-11-07 17:19:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58232 states. [2021-11-07 17:19:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58232 to 57600. [2021-11-07 17:19:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57600 states, 57171 states have (on average 1.2556191075895122) internal successors, (71785), 57599 states have internal predecessors, (71785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57600 states to 57600 states and 71785 transitions. [2021-11-07 17:19:09,115 INFO L78 Accepts]: Start accepts. Automaton has 57600 states and 71785 transitions. Word has length 161 [2021-11-07 17:19:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:19:09,117 INFO L470 AbstractCegarLoop]: Abstraction has 57600 states and 71785 transitions. [2021-11-07 17:19:09,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 57600 states and 71785 transitions. [2021-11-07 17:19:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-07 17:19:09,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:19:09,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:19:09,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:19:09,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr249ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 426 more)] === [2021-11-07 17:19:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:19:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash 837432188, now seen corresponding path program 1 times [2021-11-07 17:19:09,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:19:09,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938491937] [2021-11-07 17:19:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:19:09,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:19:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:19:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:19:09,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:19:09,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938491937] [2021-11-07 17:19:09,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938491937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:19:09,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:19:09,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:19:09,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908060253] [2021-11-07 17:19:09,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:19:09,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:19:09,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:19:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:19:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:09,406 INFO L87 Difference]: Start difference. First operand 57600 states and 71785 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:11,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:19:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:19:13,392 INFO L93 Difference]: Finished difference Result 141924 states and 176707 transitions. [2021-11-07 17:19:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:19:13,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-07 17:19:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:19:13,584 INFO L225 Difference]: With dead ends: 141924 [2021-11-07 17:19:13,584 INFO L226 Difference]: Without dead ends: 84680 [2021-11-07 17:19:13,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:13,669 INFO L933 BasicCegarLoop]: 32518 mSDtfsCounter, 25970 mSDsluCounter, 32465 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2458.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25970 SdHoareTripleChecker+Valid, 64983 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 215.96ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2636.33ms IncrementalHoareTripleChecker+Time [2021-11-07 17:19:13,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25970 Valid, 64983 Invalid, 98 Unknown, 0 Unchecked, 215.96ms Time], IncrementalHoareTripleChecker [17 Valid, 80 Invalid, 1 Unknown, 0 Unchecked, 2636.33ms Time] [2021-11-07 17:19:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84680 states. [2021-11-07 17:19:15,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84680 to 83898. [2021-11-07 17:19:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83898 states, 83469 states have (on average 1.256131018701554) internal successors, (104848), 83897 states have internal predecessors, (104848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83898 states to 83898 states and 104848 transitions. [2021-11-07 17:19:15,668 INFO L78 Accepts]: Start accepts. Automaton has 83898 states and 104848 transitions. Word has length 162 [2021-11-07 17:19:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:19:15,668 INFO L470 AbstractCegarLoop]: Abstraction has 83898 states and 104848 transitions. [2021-11-07 17:19:15,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 83898 states and 104848 transitions. [2021-11-07 17:19:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 17:19:15,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:19:15,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:19:15,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:19:15,679 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 426 more)] === [2021-11-07 17:19:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:19:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2135826751, now seen corresponding path program 1 times [2021-11-07 17:19:15,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:19:15,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975700768] [2021-11-07 17:19:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:19:15,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:19:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:19:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:19:15,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:19:15,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975700768] [2021-11-07 17:19:15,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975700768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:19:15,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:19:15,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:19:15,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910437193] [2021-11-07 17:19:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:19:15,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:19:15,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:19:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:19:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:15,972 INFO L87 Difference]: Start difference. First operand 83898 states and 104848 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:18,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:19:20,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:19:20,673 INFO L93 Difference]: Finished difference Result 209270 states and 261280 transitions. [2021-11-07 17:19:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:19:20,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-07 17:19:20,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:19:20,993 INFO L225 Difference]: With dead ends: 209270 [2021-11-07 17:19:20,993 INFO L226 Difference]: Without dead ends: 125728 [2021-11-07 17:19:21,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:21,159 INFO L933 BasicCegarLoop]: 32519 mSDtfsCounter, 24245 mSDsluCounter, 32465 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2490.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24245 SdHoareTripleChecker+Valid, 64984 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.82ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2622.45ms IncrementalHoareTripleChecker+Time [2021-11-07 17:19:21,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24245 Valid, 64984 Invalid, 98 Unknown, 0 Unchecked, 46.82ms Time], IncrementalHoareTripleChecker [17 Valid, 80 Invalid, 1 Unknown, 0 Unchecked, 2622.45ms Time] [2021-11-07 17:19:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125728 states. [2021-11-07 17:19:23,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125728 to 124970. [2021-11-07 17:19:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124970 states, 124541 states have (on average 1.2554098650243695) internal successors, (156350), 124969 states have internal predecessors, (156350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124970 states to 124970 states and 156350 transitions. [2021-11-07 17:19:23,965 INFO L78 Accepts]: Start accepts. Automaton has 124970 states and 156350 transitions. Word has length 166 [2021-11-07 17:19:23,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:19:23,965 INFO L470 AbstractCegarLoop]: Abstraction has 124970 states and 156350 transitions. [2021-11-07 17:19:23,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 124970 states and 156350 transitions. [2021-11-07 17:19:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-07 17:19:23,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:19:23,971 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:19:23,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:19:23,971 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 426 more)] === [2021-11-07 17:19:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:19:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1830401988, now seen corresponding path program 1 times [2021-11-07 17:19:23,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:19:23,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716435125] [2021-11-07 17:19:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:19:23,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:19:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:19:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:19:24,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:19:24,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716435125] [2021-11-07 17:19:24,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716435125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:19:24,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:19:24,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:19:24,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767391701] [2021-11-07 17:19:24,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:19:24,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:19:24,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:19:24,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:19:24,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:24,550 INFO L87 Difference]: Start difference. First operand 124970 states and 156350 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:26,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:19:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:19:30,298 INFO L93 Difference]: Finished difference Result 364279 states and 456000 transitions. [2021-11-07 17:19:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:19:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-07 17:19:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:19:31,193 INFO L225 Difference]: With dead ends: 364279 [2021-11-07 17:19:31,194 INFO L226 Difference]: Without dead ends: 244258 [2021-11-07 17:19:31,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:19:31,468 INFO L933 BasicCegarLoop]: 38342 mSDtfsCounter, 31926 mSDsluCounter, 32497 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2289.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31926 SdHoareTripleChecker+Valid, 70839 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.64ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2377.38ms IncrementalHoareTripleChecker+Time [2021-11-07 17:19:31,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31926 Valid, 70839 Invalid, 50 Unknown, 0 Unchecked, 54.64ms Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2377.38ms Time] [2021-11-07 17:19:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244258 states. [2021-11-07 17:19:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244258 to 243430. [2021-11-07 17:19:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243430 states, 243001 states have (on average 1.2562828959551606) internal successors, (305278), 243429 states have internal predecessors, (305278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243430 states to 243430 states and 305278 transitions. [2021-11-07 17:19:36,674 INFO L78 Accepts]: Start accepts. Automaton has 243430 states and 305278 transitions. Word has length 193 [2021-11-07 17:19:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:19:36,675 INFO L470 AbstractCegarLoop]: Abstraction has 243430 states and 305278 transitions. [2021-11-07 17:19:36,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:19:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 243430 states and 305278 transitions. [2021-11-07 17:19:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-07 17:19:36,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:19:36,681 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:19:36,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:19:36,682 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 426 more)] === [2021-11-07 17:19:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:19:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1012753538, now seen corresponding path program 1 times [2021-11-07 17:19:36,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:19:36,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790433338] [2021-11-07 17:19:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:19:36,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:19:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:19:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 17:19:37,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:19:37,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790433338] [2021-11-07 17:19:37,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790433338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:19:37,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:19:37,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:19:37,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865004754] [2021-11-07 17:19:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:19:37,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:19:37,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:19:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:19:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:19:37,673 INFO L87 Difference]: Start difference. First operand 243430 states and 305278 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)