./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:29:03,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:29:03,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:29:03,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:29:03,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:29:03,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:29:03,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:29:03,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:29:03,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:29:03,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:29:03,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:29:03,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:29:03,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:29:03,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:29:03,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:29:03,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:29:03,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:29:03,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:29:03,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:29:03,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:29:03,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:29:03,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:29:03,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:29:03,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:29:03,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:29:03,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:29:03,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:29:03,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:29:03,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:29:03,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:29:03,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:29:03,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:29:03,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:29:03,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:29:03,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:29:03,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:29:03,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:29:03,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:29:03,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:29:03,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:29:03,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:29:03,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:29:03,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:29:03,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:29:03,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:29:03,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:29:03,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:29:03,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:29:03,942 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:29:03,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:29:03,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:29:03,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:29:03,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:29:03,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:29:03,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:29:03,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:29:03,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:29:03,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:29:03,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:29:03,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:29:03,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:29:03,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:29:03,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:29:03,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:29:03,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:29:03,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:29:03,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:29:03,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:29:03,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:29:03,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:29:03,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:29:03,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a [2021-11-06 17:29:04,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:29:04,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:29:04,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:29:04,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:29:04,146 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:29:04,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-06 17:29:04,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5e386a4/428422f8b0e944848c70dad3ef8f5164/FLAGc9385d6d8 [2021-11-06 17:29:04,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:29:04,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-06 17:29:04,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5e386a4/428422f8b0e944848c70dad3ef8f5164/FLAGc9385d6d8 [2021-11-06 17:29:05,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5e386a4/428422f8b0e944848c70dad3ef8f5164 [2021-11-06 17:29:05,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:29:05,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:29:05,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:29:05,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:29:05,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:29:05,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:29:05" (1/1) ... [2021-11-06 17:29:05,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0d6bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:05, skipping insertion in model container [2021-11-06 17:29:05,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:29:05" (1/1) ... [2021-11-06 17:29:05,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:29:05,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:29:06,577 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-06 17:29:06,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:29:06,677 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:29:06,928 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2021-11-06 17:29:06,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:29:07,047 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:29:07,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07 WrapperNode [2021-11-06 17:29:07,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:29:07,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:29:07,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:29:07,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:29:07,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:07,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:07,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:29:07,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:29:07,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:29:07,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:29:07,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:07,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:07,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:07,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:08,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:08,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:08,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:08,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:29:08,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:29:08,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:29:08,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:29:08,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (1/1) ... [2021-11-06 17:29:08,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:29:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:29:08,204 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) [2021-11-06 17:29:08,221 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 [2021-11-06 17:29:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:29:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:29:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:29:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:29:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2021-11-06 17:29:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2021-11-06 17:29:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:29:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:29:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:29:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:29:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:29:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:29:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:29:36,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:29:36,855 INFO L299 CfgBuilder]: Removed 4263 assume(true) statements. [2021-11-06 17:29:36,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:29:36 BoogieIcfgContainer [2021-11-06 17:29:36,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:29:36,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:29:36,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:29:36,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:29:36,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:29:05" (1/3) ... [2021-11-06 17:29:36,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b41900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:29:36, skipping insertion in model container [2021-11-06 17:29:36,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:29:07" (2/3) ... [2021-11-06 17:29:36,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b41900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:29:36, skipping insertion in model container [2021-11-06 17:29:36,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:29:36" (3/3) ... [2021-11-06 17:29:36,867 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2021-11-06 17:29:36,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:29:36,871 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 17:29:36,931 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:29:36,947 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 [2021-11-06 17:29:36,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 17:29:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 3554 states, 3545 states have (on average 1.307475317348378) internal successors, (4635), 3549 states have internal predecessors, (4635), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 17:29:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 17:29:37,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:29:37,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:29:37,031 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 17:29:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:29:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash 119318621, now seen corresponding path program 1 times [2021-11-06 17:29:37,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:29:37,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508916819] [2021-11-06 17:29:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:29:37,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:29:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:29:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:29:37,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:29:37,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508916819] [2021-11-06 17:29:37,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508916819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:29:37,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:29:37,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:29:37,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497001753] [2021-11-06 17:29:37,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:29:37,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:29:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:29:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:29:37,719 INFO L87 Difference]: Start difference. First operand has 3554 states, 3545 states have (on average 1.307475317348378) internal successors, (4635), 3549 states have internal predecessors, (4635), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-11-06 17:29:37,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:29:37,850 INFO L93 Difference]: Finished difference Result 7104 states and 9277 transitions. [2021-11-06 17:29:37,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:29:37,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2021-11-06 17:29:37,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:29:37,876 INFO L225 Difference]: With dead ends: 7104 [2021-11-06 17:29:37,877 INFO L226 Difference]: Without dead ends: 3527 [2021-11-06 17:29:37,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:29:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2021-11-06 17:29:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3527. [2021-11-06 17:29:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3519 states have (on average 1.2972435350951974) internal successors, (4565), 3522 states have internal predecessors, (4565), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 17:29:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4571 transitions. [2021-11-06 17:29:38,048 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4571 transitions. Word has length 98 [2021-11-06 17:29:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:29:38,048 INFO L470 AbstractCegarLoop]: Abstraction has 3527 states and 4571 transitions. [2021-11-06 17:29:38,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-11-06 17:29:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4571 transitions. [2021-11-06 17:29:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 17:29:38,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:29:38,057 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:29:38,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:29:38,058 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 17:29:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:29:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 508941543, now seen corresponding path program 1 times [2021-11-06 17:29:38,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:29:38,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288266441] [2021-11-06 17:29:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:29:38,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:29:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:29:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:29:38,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:29:38,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288266441] [2021-11-06 17:29:38,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288266441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:29:38,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:29:38,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:29:38,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263173864] [2021-11-06 17:29:38,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:29:38,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:29:38,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:29:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:29:38,471 INFO L87 Difference]: Start difference. First operand 3527 states and 4571 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2021-11-06 17:29:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:29:41,298 INFO L93 Difference]: Finished difference Result 16552 states and 21461 transitions. [2021-11-06 17:29:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:29:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 98 [2021-11-06 17:29:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:29:41,343 INFO L225 Difference]: With dead ends: 16552 [2021-11-06 17:29:41,344 INFO L226 Difference]: Without dead ends: 13055 [2021-11-06 17:29:41,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:29:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13055 states. [2021-11-06 17:29:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13055 to 13035. [2021-11-06 17:29:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13035 states, 13015 states have (on average 1.2967345370726084) internal successors, (16877), 13018 states have internal predecessors, (16877), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 17:29:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13035 states to 13035 states and 16901 transitions. [2021-11-06 17:29:41,791 INFO L78 Accepts]: Start accepts. Automaton has 13035 states and 16901 transitions. Word has length 98 [2021-11-06 17:29:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:29:41,792 INFO L470 AbstractCegarLoop]: Abstraction has 13035 states and 16901 transitions. [2021-11-06 17:29:41,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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) [2021-11-06 17:29:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 13035 states and 16901 transitions. [2021-11-06 17:29:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 17:29:41,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:29:41,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:29:41,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:29:41,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 17:29:41,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:29:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash -148529875, now seen corresponding path program 1 times [2021-11-06 17:29:41,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:29:41,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269733349] [2021-11-06 17:29:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:29:41,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:29:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:29:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:29:42,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:29:42,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269733349] [2021-11-06 17:29:42,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269733349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:29:42,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:29:42,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:29:42,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456265632] [2021-11-06 17:29:42,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:29:42,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:29:42,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:29:42,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:29:42,178 INFO L87 Difference]: Start difference. First operand 13035 states and 16901 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-06 17:29:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:29:45,443 INFO L93 Difference]: Finished difference Result 61253 states and 79386 transitions. [2021-11-06 17:29:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:29:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 99 [2021-11-06 17:29:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:29:45,571 INFO L225 Difference]: With dead ends: 61253 [2021-11-06 17:29:45,572 INFO L226 Difference]: Without dead ends: 48248 [2021-11-06 17:29:45,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:29:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48248 states. [2021-11-06 17:29:46,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48248 to 48226. [2021-11-06 17:29:46,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48226 states, 48158 states have (on average 1.295257278126168) internal successors, (62377), 48161 states have internal predecessors, (62377), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-06 17:29:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48226 states to 48226 states and 62473 transitions. [2021-11-06 17:29:46,893 INFO L78 Accepts]: Start accepts. Automaton has 48226 states and 62473 transitions. Word has length 99 [2021-11-06 17:29:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:29:46,894 INFO L470 AbstractCegarLoop]: Abstraction has 48226 states and 62473 transitions. [2021-11-06 17:29:46,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2021-11-06 17:29:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 48226 states and 62473 transitions. [2021-11-06 17:29:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 17:29:46,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:29:46,900 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:29:46,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:29:46,901 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 17:29:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:29:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2099489588, now seen corresponding path program 1 times [2021-11-06 17:29:46,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:29:46,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081283779] [2021-11-06 17:29:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:29:46,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:29:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:29:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:29:47,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:29:47,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081283779] [2021-11-06 17:29:47,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081283779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:29:47,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:29:47,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:29:47,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450284382] [2021-11-06 17:29:47,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:29:47,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:29:47,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:29:47,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:29:47,242 INFO L87 Difference]: Start difference. First operand 48226 states and 62473 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2021-11-06 17:29:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:29:52,689 INFO L93 Difference]: Finished difference Result 225868 states and 292378 transitions. [2021-11-06 17:29:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:29:52,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 100 [2021-11-06 17:29:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:29:53,260 INFO L225 Difference]: With dead ends: 225868 [2021-11-06 17:29:53,260 INFO L226 Difference]: Without dead ends: 177672 [2021-11-06 17:29:53,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:29:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177672 states. [2021-11-06 17:29:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177672 to 177646. [2021-11-06 17:29:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177646 states, 177386 states have (on average 1.29339970459901) internal successors, (229431), 177389 states have internal predecessors, (229431), 192 states have call successors, (192), 64 states have call predecessors, (192), 64 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-06 17:29:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177646 states to 177646 states and 229815 transitions. [2021-11-06 17:29:58,075 INFO L78 Accepts]: Start accepts. Automaton has 177646 states and 229815 transitions. Word has length 100 [2021-11-06 17:29:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:29:58,076 INFO L470 AbstractCegarLoop]: Abstraction has 177646 states and 229815 transitions. [2021-11-06 17:29:58,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2021-11-06 17:29:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 177646 states and 229815 transitions. [2021-11-06 17:29:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 17:29:58,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:29:58,085 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:29:58,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:29:58,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 17:29:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:29:58,086 INFO L85 PathProgramCache]: Analyzing trace with hash 943952852, now seen corresponding path program 1 times [2021-11-06 17:29:58,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:29:58,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904666834] [2021-11-06 17:29:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:29:58,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:29:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:29:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:29:58,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:29:58,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904666834] [2021-11-06 17:29:58,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904666834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:29:58,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:29:58,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:29:58,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692310230] [2021-11-06 17:29:58,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:29:58,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:29:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:29:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:29:58,394 INFO L87 Difference]: Start difference. First operand 177646 states and 229815 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2021-11-06 17:30:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:30:13,357 INFO L93 Difference]: Finished difference Result 827624 states and 1069648 transitions. [2021-11-06 17:30:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:30:13,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 101 [2021-11-06 17:30:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:30:15,265 INFO L225 Difference]: With dead ends: 827624 [2021-11-06 17:30:15,266 INFO L226 Difference]: Without dead ends: 650008 [2021-11-06 17:30:15,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:30:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650008 states.