./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--usb--serial--mos7840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 08:54:01,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 08:54:01,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 08:54:01,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 08:54:01,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 08:54:01,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 08:54:01,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 08:54:01,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 08:54:01,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 08:54:01,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 08:54:01,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 08:54:01,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 08:54:01,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 08:54:01,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 08:54:01,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 08:54:01,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 08:54:01,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 08:54:01,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 08:54:01,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 08:54:01,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 08:54:01,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 08:54:01,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 08:54:01,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 08:54:01,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 08:54:01,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 08:54:01,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 08:54:01,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 08:54:01,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 08:54:01,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 08:54:01,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 08:54:01,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 08:54:01,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 08:54:01,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 08:54:01,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 08:54:01,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 08:54:01,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 08:54:01,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 08:54:01,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 08:54:01,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 08:54:01,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 08:54:01,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 08:54:01,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 08:54:01,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 08:54:01,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 08:54:01,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 08:54:01,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 08:54:01,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 08:54:01,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 08:54:01,901 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 08:54:01,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 08:54:01,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 08:54:01,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 08:54:01,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 08:54:01,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 08:54:01,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 08:54:01,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 08:54:01,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 08:54:01,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 08:54:01,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 08:54:01,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 08:54:01,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 08:54:01,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:54:01,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 08:54:01,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 08:54:01,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 08:54:01,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 08:54:01,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 08:54:01,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 08:54:01,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 08:54:01,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 08:54:01,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 08:54:01,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2021-11-04 08:54:02,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 08:54:02,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 08:54:02,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 08:54:02,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 08:54:02,137 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 08:54:02,138 INFO L432 ainManager$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--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-04 08:54:02,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea744798/788dea2b440d4cd38c0312dc496578a4/FLAG13ae8b325 [2021-11-04 08:54:02,782 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 08:54:02,784 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--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-04 08:54:02,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea744798/788dea2b440d4cd38c0312dc496578a4/FLAG13ae8b325 [2021-11-04 08:54:03,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea744798/788dea2b440d4cd38c0312dc496578a4 [2021-11-04 08:54:03,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 08:54:03,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 08:54:03,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 08:54:03,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 08:54:03,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 08:54:03,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:54:03" (1/1) ... [2021-11-04 08:54:03,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6259cfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:03, skipping insertion in model container [2021-11-04 08:54:03,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:54:03" (1/1) ... [2021-11-04 08:54:03,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 08:54:03,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 08:54:04,525 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--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-11-04 08:54:04,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:54:04,594 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 08:54:04,870 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--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-11-04 08:54:04,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:54:04,920 INFO L208 MainTranslator]: Completed translation [2021-11-04 08:54:04,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04 WrapperNode [2021-11-04 08:54:04,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 08:54:04,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 08:54:04,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 08:54:04,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 08:54:04,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:05,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:05,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 08:54:06,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 08:54:06,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 08:54:06,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 08:54:06,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:06,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:06,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:06,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:06,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:06,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:07,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:07,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 08:54:07,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 08:54:07,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 08:54:07,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 08:54:07,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (1/1) ... [2021-11-04 08:54:07,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:54:07,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:54:07,328 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) [2021-11-04 08:54:07,347 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 [2021-11-04 08:54:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 08:54:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 08:54:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 08:54:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 08:54:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 08:54:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 08:54:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 08:54:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 08:54:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 08:54:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 08:54:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 08:54:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 08:54:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 08:54:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 08:54:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 08:55:17,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 08:55:17,965 INFO L299 CfgBuilder]: Removed 5309 assume(true) statements. [2021-11-04 08:55:17,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:55:17 BoogieIcfgContainer [2021-11-04 08:55:17,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 08:55:17,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 08:55:17,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 08:55:17,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 08:55:17,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:54:03" (1/3) ... [2021-11-04 08:55:17,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4569357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:55:17, skipping insertion in model container [2021-11-04 08:55:17,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:54:04" (2/3) ... [2021-11-04 08:55:17,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4569357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:55:17, skipping insertion in model container [2021-11-04 08:55:17,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:55:17" (3/3) ... [2021-11-04 08:55:17,977 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-04 08:55:17,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 08:55:17,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2021-11-04 08:55:18,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 08:55:18,038 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 [2021-11-04 08:55:18,038 INFO L340 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2021-11-04 08:55:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 6104 states, 6001 states have (on average 1.436760539910015) internal successors, (8622), 6103 states have internal predecessors, (8622), 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) [2021-11-04 08:55:18,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-04 08:55:18,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:55:18,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:55:18,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-04 08:55:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:55:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1993312839, now seen corresponding path program 1 times [2021-11-04 08:55:18,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:55:18,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998538538] [2021-11-04 08:55:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:55:18,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:55:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:55:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:55:18,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:55:18,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998538538] [2021-11-04 08:55:18,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998538538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:55:18,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:55:18,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 08:55:18,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467139589] [2021-11-04 08:55:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:55:18,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 08:55:18,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:55:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 08:55:19,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:55:19,020 INFO L87 Difference]: Start difference. First operand has 6104 states, 6001 states have (on average 1.436760539910015) internal successors, (8622), 6103 states have internal predecessors, (8622), 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 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-11-04 08:55:21,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:56:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:56:33,205 INFO L93 Difference]: Finished difference Result 12204 states and 17239 transitions. [2021-11-04 08:56:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 08:56:33,208 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2021-11-04 08:56:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:56:33,301 INFO L225 Difference]: With dead ends: 12204 [2021-11-04 08:56:33,301 INFO L226 Difference]: Without dead ends: 6094 [2021-11-04 08:56:33,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:56:33,347 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8446 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68857.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8446 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73307.23ms IncrementalHoareTripleChecker+Time [2021-11-04 08:56:33,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 8447 Unknown, 0 Unchecked, 57.71ms Time], IncrementalHoareTripleChecker [0 Valid, 8446 Invalid, 1 Unknown, 0 Unchecked, 73307.23ms Time] [2021-11-04 08:56:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2021-11-04 08:56:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 6094. [2021-11-04 08:56:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 5992 states have (on average 1.4078771695594126) internal successors, (8436), 6093 states have internal predecessors, (8436), 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) [2021-11-04 08:56:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 8436 transitions. [2021-11-04 08:56:33,712 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 8436 transitions. Word has length 51 [2021-11-04 08:56:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:56:33,712 INFO L470 AbstractCegarLoop]: Abstraction has 6094 states and 8436 transitions. [2021-11-04 08:56:33,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-11-04 08:56:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 8436 transitions. [2021-11-04 08:56:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-04 08:56:33,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:56:33,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:56:33,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 08:56:33,717 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-04 08:56:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:56:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash 116912959, now seen corresponding path program 1 times [2021-11-04 08:56:33,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:56:33,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291122485] [2021-11-04 08:56:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:56:33,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:56:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:56:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:56:34,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:56:34,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291122485] [2021-11-04 08:56:34,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291122485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:56:34,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:56:34,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:56:34,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281174408] [2021-11-04 08:56:34,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:56:34,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:56:34,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:56:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:56:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:56:34,221 INFO L87 Difference]: Start difference. First operand 6094 states and 8436 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-04 08:56:36,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:59:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:59:17,523 INFO L93 Difference]: Finished difference Result 12173 states and 16861 transitions. [2021-11-04 08:59:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:59:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-04 08:59:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:59:17,540 INFO L225 Difference]: With dead ends: 12173 [2021-11-04 08:59:17,541 INFO L226 Difference]: Without dead ends: 6099 [2021-11-04 08:59:17,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:59:17,547 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8402 mSDsCounter, 0 mSdLazyCounter, 16865 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152312.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 123.42ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16865 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162370.02ms IncrementalHoareTripleChecker+Time [2021-11-04 08:59:17,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 16874 Unknown, 0 Unchecked, 123.42ms Time], IncrementalHoareTripleChecker [8 Valid, 16865 Invalid, 1 Unknown, 0 Unchecked, 162370.02ms Time] [2021-11-04 08:59:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2021-11-04 08:59:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 6099. [2021-11-04 08:59:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6099 states, 5997 states have (on average 1.4075371018842755) internal successors, (8441), 6098 states have internal predecessors, (8441), 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) [2021-11-04 08:59:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6099 states to 6099 states and 8441 transitions. [2021-11-04 08:59:17,633 INFO L78 Accepts]: Start accepts. Automaton has 6099 states and 8441 transitions. Word has length 51 [2021-11-04 08:59:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:59:17,634 INFO L470 AbstractCegarLoop]: Abstraction has 6099 states and 8441 transitions. [2021-11-04 08:59:17,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-04 08:59:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 6099 states and 8441 transitions. [2021-11-04 08:59:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-04 08:59:17,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:59:17,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:59:17,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 08:59:17,642 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-04 08:59:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:59:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 727229109, now seen corresponding path program 1 times [2021-11-04 08:59:17,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:59:17,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486809752] [2021-11-04 08:59:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:59:17,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:59:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:59:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 08:59:18,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:59:18,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486809752] [2021-11-04 08:59:18,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486809752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:59:18,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:59:18,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:59:18,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671183146] [2021-11-04 08:59:18,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:59:18,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:59:18,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:59:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:59:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:59:18,123 INFO L87 Difference]: Start difference. First operand 6099 states and 8441 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-04 08:59:20,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:02:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:02:18,760 INFO L93 Difference]: Finished difference Result 12168 states and 16850 transitions. [2021-11-04 09:02:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:02:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-04 09:02:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:02:18,778 INFO L225 Difference]: With dead ends: 12168 [2021-11-04 09:02:18,778 INFO L226 Difference]: Without dead ends: 6101 [2021-11-04 09:02:18,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:02:18,786 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8402 mSDsCounter, 0 mSdLazyCounter, 16868 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163605.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16868 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179727.44ms IncrementalHoareTripleChecker+Time [2021-11-04 09:02:18,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 16871 Unknown, 0 Unchecked, 107.85ms Time], IncrementalHoareTripleChecker [2 Valid, 16868 Invalid, 1 Unknown, 0 Unchecked, 179727.44ms Time] [2021-11-04 09:02:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6101 states. [2021-11-04 09:02:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6101 to 6101. [2021-11-04 09:02:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6101 states, 5999 states have (on average 1.4074012335389232) internal successors, (8443), 6100 states have internal predecessors, (8443), 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) [2021-11-04 09:02:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6101 states to 6101 states and 8443 transitions. [2021-11-04 09:02:18,866 INFO L78 Accepts]: Start accepts. Automaton has 6101 states and 8443 transitions. Word has length 56 [2021-11-04 09:02:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:02:18,867 INFO L470 AbstractCegarLoop]: Abstraction has 6101 states and 8443 transitions. [2021-11-04 09:02:18,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-04 09:02:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 6101 states and 8443 transitions. [2021-11-04 09:02:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-04 09:02:18,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:02:18,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:02:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 09:02:18,868 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-04 09:02:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:02:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash -828172617, now seen corresponding path program 1 times [2021-11-04 09:02:18,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:02:18,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096005049] [2021-11-04 09:02:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:02:18,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:02:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:02:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 09:02:19,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:02:19,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096005049] [2021-11-04 09:02:19,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096005049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:02:19,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:02:19,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 09:02:19,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179967154] [2021-11-04 09:02:19,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:02:19,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 09:02:19,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:02:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 09:02:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:02:19,487 INFO L87 Difference]: Start difference. First operand 6101 states and 8443 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-11-04 09:02:21,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15