./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-spinlock_drivers-net-ethernet-fealnx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-spinlock_drivers-net-ethernet-fealnx.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 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 20:46:17,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 20:46:17,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 20:46:17,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 20:46:17,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 20:46:17,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 20:46:17,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 20:46:17,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 20:46:17,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 20:46:17,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 20:46:17,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 20:46:17,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 20:46:17,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 20:46:17,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 20:46:17,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 20:46:17,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 20:46:17,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 20:46:17,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 20:46:17,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 20:46:17,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 20:46:17,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 20:46:17,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 20:46:17,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 20:46:17,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 20:46:17,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 20:46:17,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 20:46:17,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 20:46:17,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 20:46:17,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 20:46:17,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 20:46:17,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 20:46:17,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 20:46:17,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 20:46:17,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 20:46:17,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 20:46:17,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 20:46:17,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 20:46:17,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 20:46:17,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 20:46:17,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 20:46:17,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 20:46:17,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 20:46:17,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 20:46:17,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 20:46:17,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 20:46:17,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 20:46:17,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 20:46:17,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 20:46:17,835 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 20:46:17,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 20:46:17,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 20:46:17,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 20:46:17,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 20:46:17,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 20:46:17,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 20:46:17,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 20:46:17,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 20:46:17,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 20:46:17,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 20:46:17,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 20:46:17,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 20:46:17,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:46:17,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 20:46:17,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 20:46:17,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 20:46:17,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 20:46:17,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 20:46:17,844 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 20:46:17,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 20:46:17,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 20:46:17,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 20:46:17,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2021-11-05 20:46:18,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 20:46:18,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 20:46:18,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 20:46:18,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 20:46:18,148 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 20:46:18,149 INFO L432 ainManager$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-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-05 20:46:18,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a40a21d/39e486fb659a4685b10f51a71641b284/FLAGe8bceaf20 [2021-11-05 20:46:18,865 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 20:46:18,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-05 20:46:18,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a40a21d/39e486fb659a4685b10f51a71641b284/FLAGe8bceaf20 [2021-11-05 20:46:19,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9a40a21d/39e486fb659a4685b10f51a71641b284 [2021-11-05 20:46:19,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 20:46:19,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 20:46:19,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 20:46:19,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 20:46:19,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 20:46:19,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:46:19" (1/1) ... [2021-11-05 20:46:19,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ee520d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:19, skipping insertion in model container [2021-11-05 20:46:19,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:46:19" (1/1) ... [2021-11-05 20:46:19,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 20:46:19,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 20:46:21,144 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-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-05 20:46:21,146 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-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-05 20:46:21,147 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-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-05 20:46:21,147 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-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-05 20:46:21,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:46:21,217 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 20:46:21,436 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-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-05 20:46:21,437 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-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-05 20:46:21,437 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-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-05 20:46:21,438 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-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-05 20:46:21,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:46:21,567 INFO L208 MainTranslator]: Completed translation [2021-11-05 20:46:21,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21 WrapperNode [2021-11-05 20:46:21,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 20:46:21,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 20:46:21,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 20:46:21,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 20:46:21,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:21,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 20:46:22,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 20:46:22,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 20:46:22,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 20:46:22,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 20:46:22,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 20:46:22,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 20:46:22,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 20:46:22,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (1/1) ... [2021-11-05 20:46:22,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:46:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:46:22,818 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) [2021-11-05 20:46:22,848 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 [2021-11-05 20:46:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 20:46:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 20:46:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 20:46:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 20:46:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 20:46:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 20:46:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 20:46:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 20:46:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 20:46:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 20:46:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 20:46:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 20:46:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 20:46:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 20:46:22,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:46:28,791 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 20:46:28,791 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-05 20:46:28,791 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 20:46:28,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:46:28,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:46:28,792 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:46:28,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:46:28,813 INFO L299 CfgBuilder]: Removed 3826 assume(true) statements. [2021-11-05 20:46:28,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:46:28 BoogieIcfgContainer [2021-11-05 20:46:28,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:46:28,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:46:28,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:46:28,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:46:28,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:46:19" (1/3) ... [2021-11-05 20:46:28,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546d5c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:46:28, skipping insertion in model container [2021-11-05 20:46:28,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:46:21" (2/3) ... [2021-11-05 20:46:28,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546d5c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:46:28, skipping insertion in model container [2021-11-05 20:46:28,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:46:28" (3/3) ... [2021-11-05 20:46:28,821 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-05 20:46:28,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:46:28,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-11-05 20:46:28,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:46:28,867 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 [2021-11-05 20:46:28,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-11-05 20:46:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 3689 states, 3628 states have (on average 1.3321389195148843) internal successors, (4833), 3688 states have internal predecessors, (4833), 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) [2021-11-05 20:46:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 20:46:28,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:28,928 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] [2021-11-05 20:46:28,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash -967687657, now seen corresponding path program 1 times [2021-11-05 20:46:28,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:28,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056354542] [2021-11-05 20:46:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:28,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:46:29,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:29,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056354542] [2021-11-05 20:46:29,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056354542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:29,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:29,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:29,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764208831] [2021-11-05 20:46:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:29,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:46:29,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:29,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:46:29,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:29,288 INFO L87 Difference]: Start difference. First operand has 3689 states, 3628 states have (on average 1.3321389195148843) internal successors, (4833), 3688 states have internal predecessors, (4833), 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 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-05 20:46:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:30,465 INFO L93 Difference]: Finished difference Result 10272 states and 13449 transitions. [2021-11-05 20:46:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:46:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-05 20:46:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:30,494 INFO L225 Difference]: With dead ends: 10272 [2021-11-05 20:46:30,494 INFO L226 Difference]: Without dead ends: 6399 [2021-11-05 20:46:30,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:30,507 INFO L933 BasicCegarLoop]: 4725 mSDtfsCounter, 4046 mSDsluCounter, 4475 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 859.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 9200 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.65ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 906.88ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:30,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 9200 Invalid, 51 Unknown, 0 Unchecked, 30.65ms Time], IncrementalHoareTripleChecker [13 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 906.88ms Time] [2021-11-05 20:46:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-11-05 20:46:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5969. [2021-11-05 20:46:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5969 states, 5908 states have (on average 1.2808056872037914) internal successors, (7567), 5968 states have internal predecessors, (7567), 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) [2021-11-05 20:46:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 7567 transitions. [2021-11-05 20:46:30,678 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 7567 transitions. Word has length 43 [2021-11-05 20:46:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:30,679 INFO L470 AbstractCegarLoop]: Abstraction has 5969 states and 7567 transitions. [2021-11-05 20:46:30,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-05 20:46:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 7567 transitions. [2021-11-05 20:46:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 20:46:30,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:30,681 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] [2021-11-05 20:46:30,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:46:30,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash -113139560, now seen corresponding path program 1 times [2021-11-05 20:46:30,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:30,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753601808] [2021-11-05 20:46:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:30,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:46:30,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:30,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753601808] [2021-11-05 20:46:30,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753601808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:30,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:30,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:30,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355678762] [2021-11-05 20:46:30,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:30,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:46:30,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:30,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:46:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:30,784 INFO L87 Difference]: Start difference. First operand 5969 states and 7567 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-05 20:46:31,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:31,638 INFO L93 Difference]: Finished difference Result 17513 states and 22286 transitions. [2021-11-05 20:46:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:46:31,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-05 20:46:31,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:31,674 INFO L225 Difference]: With dead ends: 17513 [2021-11-05 20:46:31,676 INFO L226 Difference]: Without dead ends: 11620 [2021-11-05 20:46:31,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:31,692 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 4143 mSDsluCounter, 4377 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 458.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 8792 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.80ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 488.00ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:31,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4143 Valid, 8792 Invalid, 34 Unknown, 0 Unchecked, 11.80ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 488.00ms Time] [2021-11-05 20:46:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-11-05 20:46:31,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11576. [2021-11-05 20:46:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11576 states, 11515 states have (on average 1.2825010855405992) internal successors, (14768), 11575 states have internal predecessors, (14768), 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) [2021-11-05 20:46:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11576 states to 11576 states and 14768 transitions. [2021-11-05 20:46:31,926 INFO L78 Accepts]: Start accepts. Automaton has 11576 states and 14768 transitions. Word has length 45 [2021-11-05 20:46:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:31,926 INFO L470 AbstractCegarLoop]: Abstraction has 11576 states and 14768 transitions. [2021-11-05 20:46:31,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-05 20:46:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 11576 states and 14768 transitions. [2021-11-05 20:46:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 20:46:31,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:31,928 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] [2021-11-05 20:46:31,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:46:31,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:31,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:31,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1292504363, now seen corresponding path program 1 times [2021-11-05 20:46:31,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:31,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530694270] [2021-11-05 20:46:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:31,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:46:32,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:32,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530694270] [2021-11-05 20:46:32,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530694270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:32,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:32,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:32,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914392948] [2021-11-05 20:46:32,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:32,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:46:32,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:32,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:46:32,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:32,022 INFO L87 Difference]: Start difference. First operand 11576 states and 14768 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-05 20:46:32,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:32,671 INFO L93 Difference]: Finished difference Result 32556 states and 41586 transitions. [2021-11-05 20:46:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:46:32,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-05 20:46:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:32,742 INFO L225 Difference]: With dead ends: 32556 [2021-11-05 20:46:32,742 INFO L226 Difference]: Without dead ends: 21056 [2021-11-05 20:46:32,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:32,771 INFO L933 BasicCegarLoop]: 4408 mSDtfsCounter, 3818 mSDsluCounter, 4125 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 8533 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.19ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.99ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:32,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3818 Valid, 8533 Invalid, 40 Unknown, 0 Unchecked, 9.19ms Time], IncrementalHoareTripleChecker [14 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 337.99ms Time] [2021-11-05 20:46:32,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21056 states. [2021-11-05 20:46:33,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21056 to 20518. [2021-11-05 20:46:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20518 states, 20457 states have (on average 1.2861123331866842) internal successors, (26310), 20517 states have internal predecessors, (26310), 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) [2021-11-05 20:46:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20518 states to 20518 states and 26310 transitions. [2021-11-05 20:46:33,492 INFO L78 Accepts]: Start accepts. Automaton has 20518 states and 26310 transitions. Word has length 46 [2021-11-05 20:46:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:33,492 INFO L470 AbstractCegarLoop]: Abstraction has 20518 states and 26310 transitions. [2021-11-05 20:46:33,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-05 20:46:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 20518 states and 26310 transitions. [2021-11-05 20:46:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 20:46:33,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:33,500 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] [2021-11-05 20:46:33,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:46:33,500 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1026351272, now seen corresponding path program 1 times [2021-11-05 20:46:33,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:33,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908001052] [2021-11-05 20:46:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:33,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:46:33,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:33,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908001052] [2021-11-05 20:46:33,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908001052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:33,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:33,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:33,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913730236] [2021-11-05 20:46:33,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:33,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:46:33,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:33,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:46:33,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:33,622 INFO L87 Difference]: Start difference. First operand 20518 states and 26310 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-05 20:46:34,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:34,464 INFO L93 Difference]: Finished difference Result 35921 states and 46039 transitions. [2021-11-05 20:46:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:46:34,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-05 20:46:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:34,494 INFO L225 Difference]: With dead ends: 35921 [2021-11-05 20:46:34,494 INFO L226 Difference]: Without dead ends: 15479 [2021-11-05 20:46:34,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:34,523 INFO L933 BasicCegarLoop]: 4916 mSDtfsCounter, 1823 mSDsluCounter, 4258 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 9174 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.52ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 465.55ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:34,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 9174 Invalid, 100 Unknown, 0 Unchecked, 12.52ms Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 465.55ms Time] [2021-11-05 20:46:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15479 states. [2021-11-05 20:46:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15479 to 15361. [2021-11-05 20:46:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15361 states, 15300 states have (on average 1.2822875816993464) internal successors, (19619), 15360 states have internal predecessors, (19619), 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) [2021-11-05 20:46:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15361 states to 15361 states and 19619 transitions. [2021-11-05 20:46:34,764 INFO L78 Accepts]: Start accepts. Automaton has 15361 states and 19619 transitions. Word has length 48 [2021-11-05 20:46:34,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:34,764 INFO L470 AbstractCegarLoop]: Abstraction has 15361 states and 19619 transitions. [2021-11-05 20:46:34,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-05 20:46:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 15361 states and 19619 transitions. [2021-11-05 20:46:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-05 20:46:34,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:34,766 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] [2021-11-05 20:46:34,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:46:34,766 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash 950652540, now seen corresponding path program 1 times [2021-11-05 20:46:34,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:34,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063298749] [2021-11-05 20:46:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:34,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:46:34,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:34,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063298749] [2021-11-05 20:46:34,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063298749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:34,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:34,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:34,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094500532] [2021-11-05 20:46:34,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:34,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:46:34,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:46:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:34,874 INFO L87 Difference]: Start difference. First operand 15361 states and 19619 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-05 20:46:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:35,755 INFO L93 Difference]: Finished difference Result 40436 states and 51756 transitions. [2021-11-05 20:46:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:46:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-05 20:46:35,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:35,812 INFO L225 Difference]: With dead ends: 40436 [2021-11-05 20:46:35,812 INFO L226 Difference]: Without dead ends: 25151 [2021-11-05 20:46:35,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:35,832 INFO L933 BasicCegarLoop]: 4412 mSDtfsCounter, 3784 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 352.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 8761 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.21ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 408.87ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:35,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3784 Valid, 8761 Invalid, 80 Unknown, 0 Unchecked, 23.21ms Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 408.87ms Time] [2021-11-05 20:46:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25151 states. [2021-11-05 20:46:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25151 to 24707. [2021-11-05 20:46:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24707 states, 24646 states have (on average 1.2857664529741135) internal successors, (31689), 24706 states have internal predecessors, (31689), 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) [2021-11-05 20:46:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24707 states to 24707 states and 31689 transitions. [2021-11-05 20:46:36,248 INFO L78 Accepts]: Start accepts. Automaton has 24707 states and 31689 transitions. Word has length 49 [2021-11-05 20:46:36,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:36,248 INFO L470 AbstractCegarLoop]: Abstraction has 24707 states and 31689 transitions. [2021-11-05 20:46:36,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-05 20:46:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 24707 states and 31689 transitions. [2021-11-05 20:46:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 20:46:36,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:36,250 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:46:36,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:46:36,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -960392490, now seen corresponding path program 1 times [2021-11-05 20:46:36,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:36,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955352210] [2021-11-05 20:46:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:36,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:46:36,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:36,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955352210] [2021-11-05 20:46:36,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955352210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:36,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:36,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:36,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473017984] [2021-11-05 20:46:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:36,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:46:36,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:46:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:36,385 INFO L87 Difference]: Start difference. First operand 24707 states and 31689 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-05 20:46:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:37,343 INFO L93 Difference]: Finished difference Result 72950 states and 93628 transitions. [2021-11-05 20:46:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:46:37,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-05 20:46:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:37,436 INFO L225 Difference]: With dead ends: 72950 [2021-11-05 20:46:37,437 INFO L226 Difference]: Without dead ends: 48319 [2021-11-05 20:46:37,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:37,485 INFO L933 BasicCegarLoop]: 4918 mSDtfsCounter, 4316 mSDsluCounter, 4407 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 306.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 9325 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.77ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 339.12ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:37,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 9325 Invalid, 21 Unknown, 0 Unchecked, 7.77ms Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 339.12ms Time] [2021-11-05 20:46:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48319 states. [2021-11-05 20:46:38,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48319 to 48009. [2021-11-05 20:46:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48009 states, 47948 states have (on average 1.2865604404771835) internal successors, (61688), 48008 states have internal predecessors, (61688), 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) [2021-11-05 20:46:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48009 states to 48009 states and 61688 transitions. [2021-11-05 20:46:38,400 INFO L78 Accepts]: Start accepts. Automaton has 48009 states and 61688 transitions. Word has length 61 [2021-11-05 20:46:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:38,400 INFO L470 AbstractCegarLoop]: Abstraction has 48009 states and 61688 transitions. [2021-11-05 20:46:38,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-05 20:46:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 48009 states and 61688 transitions. [2021-11-05 20:46:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 20:46:38,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:38,402 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:46:38,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 20:46:38,403 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1943570088, now seen corresponding path program 1 times [2021-11-05 20:46:38,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:38,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810240986] [2021-11-05 20:46:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:38,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:46:38,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:38,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810240986] [2021-11-05 20:46:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810240986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:38,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124174844] [2021-11-05 20:46:38,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:38,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:46:38,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:46:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:38,483 INFO L87 Difference]: Start difference. First operand 48009 states and 61688 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-05 20:46:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:40,416 INFO L93 Difference]: Finished difference Result 142595 states and 183443 transitions. [2021-11-05 20:46:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:46:40,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-05 20:46:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:40,589 INFO L225 Difference]: With dead ends: 142595 [2021-11-05 20:46:40,589 INFO L226 Difference]: Without dead ends: 94713 [2021-11-05 20:46:40,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:40,669 INFO L933 BasicCegarLoop]: 4981 mSDtfsCounter, 4122 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 383.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 9377 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.58ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 416.10ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:40,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4122 Valid, 9377 Invalid, 30 Unknown, 0 Unchecked, 7.58ms Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 416.10ms Time] [2021-11-05 20:46:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94713 states. [2021-11-05 20:46:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94713 to 94669. [2021-11-05 20:46:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94669 states, 94608 states have (on average 1.2865296803652968) internal successors, (121716), 94668 states have internal predecessors, (121716), 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) [2021-11-05 20:46:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94669 states to 94669 states and 121716 transitions. [2021-11-05 20:46:42,905 INFO L78 Accepts]: Start accepts. Automaton has 94669 states and 121716 transitions. Word has length 74 [2021-11-05 20:46:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:42,906 INFO L470 AbstractCegarLoop]: Abstraction has 94669 states and 121716 transitions. [2021-11-05 20:46:42,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-05 20:46:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 94669 states and 121716 transitions. [2021-11-05 20:46:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 20:46:42,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:42,912 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:46:42,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 20:46:42,913 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash 663706410, now seen corresponding path program 1 times [2021-11-05 20:46:42,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:42,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203447428] [2021-11-05 20:46:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:42,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:46:43,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:43,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203447428] [2021-11-05 20:46:43,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203447428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:43,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:43,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:43,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426277763] [2021-11-05 20:46:43,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:43,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:46:43,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:46:43,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:43,030 INFO L87 Difference]: Start difference. First operand 94669 states and 121716 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-05 20:46:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:46,057 INFO L93 Difference]: Finished difference Result 235947 states and 303563 transitions. [2021-11-05 20:46:46,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:46:46,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-05 20:46:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:46,348 INFO L225 Difference]: With dead ends: 235947 [2021-11-05 20:46:46,348 INFO L226 Difference]: Without dead ends: 141405 [2021-11-05 20:46:46,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:46:46,470 INFO L933 BasicCegarLoop]: 8538 mSDtfsCounter, 4172 mSDsluCounter, 4347 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 339.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 12885 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.64ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 366.90ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:46,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4172 Valid, 12885 Invalid, 32 Unknown, 0 Unchecked, 7.64ms Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 366.90ms Time] [2021-11-05 20:46:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141405 states. [2021-11-05 20:46:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141405 to 141144. [2021-11-05 20:46:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141144 states, 141083 states have (on average 1.286894948363729) internal successors, (181559), 141143 states have internal predecessors, (181559), 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) [2021-11-05 20:46:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141144 states to 141144 states and 181559 transitions. [2021-11-05 20:46:49,729 INFO L78 Accepts]: Start accepts. Automaton has 141144 states and 181559 transitions. Word has length 74 [2021-11-05 20:46:49,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:49,733 INFO L470 AbstractCegarLoop]: Abstraction has 141144 states and 181559 transitions. [2021-11-05 20:46:49,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-05 20:46:49,733 INFO L276 IsEmpty]: Start isEmpty. Operand 141144 states and 181559 transitions. [2021-11-05 20:46:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 20:46:49,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:49,736 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:46:49,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 20:46:49,737 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash 820923817, now seen corresponding path program 1 times [2021-11-05 20:46:49,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:49,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587736037] [2021-11-05 20:46:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:49,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 20:46:50,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:50,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587736037] [2021-11-05 20:46:50,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587736037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:50,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:50,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:50,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26104521] [2021-11-05 20:46:50,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:50,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:46:50,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:50,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:46:50,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:46:50,210 INFO L87 Difference]: Start difference. First operand 141144 states and 181559 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-05 20:46:52,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:52,481 INFO L93 Difference]: Finished difference Result 141144 states and 181559 transitions. [2021-11-05 20:46:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:46:52,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 75 [2021-11-05 20:46:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:52,749 INFO L225 Difference]: With dead ends: 141144 [2021-11-05 20:46:52,750 INFO L226 Difference]: Without dead ends: 141138 [2021-11-05 20:46:52,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:46:52,797 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 4356 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4356 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.99ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.70ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:52,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4356 Valid, 8715 Invalid, 115 Unknown, 0 Unchecked, 10.99ms Time], IncrementalHoareTripleChecker [37 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 67.70ms Time] [2021-11-05 20:46:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141138 states. [2021-11-05 20:46:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141138 to 141138. [2021-11-05 20:46:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141138 states, 141080 states have (on average 1.2868797845194215) internal successors, (181553), 141137 states have internal predecessors, (181553), 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) [2021-11-05 20:46:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141138 states to 141138 states and 181553 transitions. [2021-11-05 20:46:56,541 INFO L78 Accepts]: Start accepts. Automaton has 141138 states and 181553 transitions. Word has length 75 [2021-11-05 20:46:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:46:56,541 INFO L470 AbstractCegarLoop]: Abstraction has 141138 states and 181553 transitions. [2021-11-05 20:46:56,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-05 20:46:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 141138 states and 181553 transitions. [2021-11-05 20:46:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 20:46:56,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:46:56,543 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:46:56,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 20:46:56,543 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:46:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:46:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1366046868, now seen corresponding path program 1 times [2021-11-05 20:46:56,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:46:56,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242500577] [2021-11-05 20:46:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:46:56,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:46:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:46:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 20:46:56,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:46:56,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242500577] [2021-11-05 20:46:56,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242500577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:46:56,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:46:56,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:46:56,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996722317] [2021-11-05 20:46:56,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:46:56,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:46:56,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:46:56,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:46:56,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:46:56,751 INFO L87 Difference]: Start difference. First operand 141138 states and 181553 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-05 20:46:59,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:46:59,136 INFO L93 Difference]: Finished difference Result 141138 states and 181553 transitions. [2021-11-05 20:46:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:46:59,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 77 [2021-11-05 20:46:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:46:59,416 INFO L225 Difference]: With dead ends: 141138 [2021-11-05 20:46:59,416 INFO L226 Difference]: Without dead ends: 141132 [2021-11-05 20:46:59,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:46:59,473 INFO L933 BasicCegarLoop]: 4404 mSDtfsCounter, 4345 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4345 SdHoareTripleChecker+Valid, 8706 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.93ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.65ms IncrementalHoareTripleChecker+Time [2021-11-05 20:46:59,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4345 Valid, 8706 Invalid, 115 Unknown, 0 Unchecked, 11.93ms Time], IncrementalHoareTripleChecker [40 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 69.65ms Time] [2021-11-05 20:46:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141132 states. [2021-11-05 20:47:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141132 to 141132. [2021-11-05 20:47:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141132 states, 141077 states have (on average 1.2868646200301963) internal successors, (181547), 141131 states have internal predecessors, (181547), 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) [2021-11-05 20:47:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141132 states to 141132 states and 181547 transitions. [2021-11-05 20:47:03,291 INFO L78 Accepts]: Start accepts. Automaton has 141132 states and 181547 transitions. Word has length 77 [2021-11-05 20:47:03,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:47:03,291 INFO L470 AbstractCegarLoop]: Abstraction has 141132 states and 181547 transitions. [2021-11-05 20:47:03,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-05 20:47:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand 141132 states and 181547 transitions. [2021-11-05 20:47:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 20:47:03,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:47:03,293 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:47:03,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 20:47:03,294 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-05 20:47:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:47:03,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1489100207, now seen corresponding path program 1 times [2021-11-05 20:47:03,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:47:03,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227553687] [2021-11-05 20:47:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:47:03,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:47:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:47:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 20:47:03,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:47:03,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227553687] [2021-11-05 20:47:03,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227553687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:47:03,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:47:03,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:47:03,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436814295] [2021-11-05 20:47:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:47:03,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:47:03,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:47:03,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:47:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:47:03,406 INFO L87 Difference]: Start difference. First operand 141132 states and 181547 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-05 20:47:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:47:06,071 INFO L93 Difference]: Finished difference Result 141132 states and 181547 transitions. [2021-11-05 20:47:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:47:06,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 79 [2021-11-05 20:47:06,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:47:06,496 INFO L225 Difference]: With dead ends: 141132 [2021-11-05 20:47:06,497 INFO L226 Difference]: Without dead ends: 141126 [2021-11-05 20:47:06,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:47:06,556 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4337 mSDsluCounter, 4299 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 8697 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.31ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.15ms IncrementalHoareTripleChecker+Time [2021-11-05 20:47:06,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4337 Valid, 8697 Invalid, 112 Unknown, 0 Unchecked, 23.31ms Time], IncrementalHoareTripleChecker [40 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 64.15ms Time] [2021-11-05 20:47:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141126 states.