./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-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-5f08f0f [2021-11-05 19:45:02,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:45:02,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:45:02,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:45:02,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:45:02,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:45:02,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:45:02,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:45:02,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:45:02,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:45:02,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:45:02,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:45:02,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:45:02,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:45:02,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:45:02,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:45:02,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:45:02,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:45:02,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:45:02,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:45:02,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:45:02,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:45:02,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:45:02,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:45:02,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:45:02,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:45:02,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:45:02,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:45:02,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:45:02,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:45:02,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:45:02,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:45:02,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:45:02,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:45:02,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:45:02,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:45:02,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:45:02,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:45:02,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:45:02,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:45:02,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:45:02,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:45:02,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:45:02,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:45:02,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:45:02,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:45:02,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:45:02,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:45:02,922 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:45:02,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:45:02,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:45:02,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:45:02,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:45:02,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:45:02,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:45:02,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:45:02,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:45:02,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:45:02,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:45:02,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:45:02,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:45:02,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:45:02,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:45:02,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:45:02,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:45:02,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:45:02,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:45:02,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:45:02,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:45:02,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:45:02,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:45:02,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2021-11-05 19:45:03,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:45:03,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:45:03,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:45:03,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:45:03,263 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:45:03,264 INFO L432 ainManager$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 [2021-11-05 19:45:03,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e67adb2/10674e55889c4ce782b2a369f4694568/FLAG632dc87a3 [2021-11-05 19:45:04,044 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:45:04,046 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 [2021-11-05 19:45:04,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e67adb2/10674e55889c4ce782b2a369f4694568/FLAG632dc87a3 [2021-11-05 19:45:04,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90e67adb2/10674e55889c4ce782b2a369f4694568 [2021-11-05 19:45:04,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:45:04,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:45:04,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:45:04,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:45:04,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:45:04,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:45:04" (1/1) ... [2021-11-05 19:45:04,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494e6e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:04, skipping insertion in model container [2021-11-05 19:45:04,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:45:04" (1/1) ... [2021-11-05 19:45:04,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:45:04,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:45:05,600 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] [2021-11-05 19:45:05,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:45:05,686 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:45:06,007 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] [2021-11-05 19:45:06,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:45:06,083 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:45:06,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06 WrapperNode [2021-11-05 19:45:06,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:45:06,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:45:06,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:45:06,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:45:06,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:06,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:07,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:45:07,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:45:07,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:45:07,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:45:07,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:07,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:07,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:07,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:08,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:08,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:08,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:08,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:45:08,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:45:08,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:45:08,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:45:08,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (1/1) ... [2021-11-05 19:45:08,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:45:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:45:08,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 19:45:08,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 19:45:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:45:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:45:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:45:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:45:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:45:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:45:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:45:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:45:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:45:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:45:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:45:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:45:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:45:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:45:08,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:47:37,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:47:37,095 INFO L299 CfgBuilder]: Removed 5309 assume(true) statements. [2021-11-05 19:47:37,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:47:37 BoogieIcfgContainer [2021-11-05 19:47:37,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:47:37,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:47:37,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:47:37,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:47:37,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:45:04" (1/3) ... [2021-11-05 19:47:37,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea53aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:47:37, skipping insertion in model container [2021-11-05 19:47:37,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:45:06" (2/3) ... [2021-11-05 19:47:37,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea53aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:47:37, skipping insertion in model container [2021-11-05 19:47:37,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:47:37" (3/3) ... [2021-11-05 19:47:37,107 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-05 19:47:37,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:47:37,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2021-11-05 19:47:37,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:47:37,170 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 19:47:37,170 INFO L340 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2021-11-05 19:47:37,248 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) [2021-11-05 19:47:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 19:47:37,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:47:37,256 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] [2021-11-05 19:47:37,257 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)] === [2021-11-05 19:47:37,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:47:37,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1993312839, now seen corresponding path program 1 times [2021-11-05 19:47:37,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:47:37,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045326137] [2021-11-05 19:47:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:47:37,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:47:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:47:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:47:38,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:47:38,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045326137] [2021-11-05 19:47:38,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045326137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:47:38,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:47:38,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:47:38,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634135946] [2021-11-05 19:47:38,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:47:38,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:47:38,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:47:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:47:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:47:38,270 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) [2021-11-05 19:47:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:47:38,465 INFO L93 Difference]: Finished difference Result 12204 states and 17239 transitions. [2021-11-05 19:47:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:47:38,467 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 [2021-11-05 19:47:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:47:38,508 INFO L225 Difference]: With dead ends: 12204 [2021-11-05 19:47:38,508 INFO L226 Difference]: Without dead ends: 6094 [2021-11-05 19:47:38,524 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 [2021-11-05 19:47:38,533 INFO L933 BasicCegarLoop]: 8452 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8452 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:47:38,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8452 Invalid, 0 Unknown, 0 Unchecked, 20.33ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:47:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2021-11-05 19:47:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 6094. [2021-11-05 19:47:38,713 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) [2021-11-05 19:47:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 8436 transitions. [2021-11-05 19:47:38,733 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 8436 transitions. Word has length 51 [2021-11-05 19:47:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:47:38,734 INFO L470 AbstractCegarLoop]: Abstraction has 6094 states and 8436 transitions. [2021-11-05 19:47:38,734 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) [2021-11-05 19:47:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 8436 transitions. [2021-11-05 19:47:38,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 19:47:38,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:47:38,738 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] [2021-11-05 19:47:38,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:47:38,738 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)] === [2021-11-05 19:47:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:47:38,740 INFO L85 PathProgramCache]: Analyzing trace with hash 116912959, now seen corresponding path program 1 times [2021-11-05 19:47:38,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:47:38,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247433952] [2021-11-05 19:47:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:47:38,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:47:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:47:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:47:39,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:47:39,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247433952] [2021-11-05 19:47:39,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247433952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:47:39,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:47:39,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:47:39,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982125459] [2021-11-05 19:47:39,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:47:39,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:47:39,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:47:39,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:47:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:47:39,966 INFO L87 Difference]: Start difference. First operand 6094 states and 8436 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2021-11-05 19:47:42,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:47:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:47:47,195 INFO L93 Difference]: Finished difference Result 30083 states and 41585 transitions. [2021-11-05 19:47:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:47:47,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 [2021-11-05 19:47:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:47:47,282 INFO L225 Difference]: With dead ends: 30083 [2021-11-05 19:47:47,282 INFO L226 Difference]: Without dead ends: 24031 [2021-11-05 19:47:47,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 152.01ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:47:47,304 INFO L933 BasicCegarLoop]: 8547 mSDtfsCounter, 24644 mSDsluCounter, 49366 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6179.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24644 SdHoareTripleChecker+Valid, 57913 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.28ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6483.60ms IncrementalHoareTripleChecker+Time [2021-11-05 19:47:47,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24644 Valid, 57913 Invalid, 596 Unknown, 0 Unchecked, 85.28ms Time], IncrementalHoareTripleChecker [77 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 6483.60ms Time] [2021-11-05 19:47:47,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24031 states. [2021-11-05 19:47:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24031 to 23401. [2021-11-05 19:47:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23401 states, 23299 states have (on average 1.407914502768359) internal successors, (32803), 23400 states have internal predecessors, (32803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:47:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23401 states to 23401 states and 32803 transitions. [2021-11-05 19:47:47,916 INFO L78 Accepts]: Start accepts. Automaton has 23401 states and 32803 transitions. Word has length 51 [2021-11-05 19:47:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:47:47,917 INFO L470 AbstractCegarLoop]: Abstraction has 23401 states and 32803 transitions. [2021-11-05 19:47:47,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2021-11-05 19:47:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 23401 states and 32803 transitions. [2021-11-05 19:47:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 19:47:47,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:47:47,929 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] [2021-11-05 19:47:47,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:47:47,930 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-05 19:47:47,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:47:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2140903843, now seen corresponding path program 1 times [2021-11-05 19:47:47,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:47:47,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012004419] [2021-11-05 19:47:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:47:47,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:47:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:47:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:47:48,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:47:48,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012004419] [2021-11-05 19:47:48,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012004419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:47:48,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:47:48,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:47:48,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035738358] [2021-11-05 19:47:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:47:48,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:47:48,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:47:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:47:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:47:48,515 INFO L87 Difference]: Start difference. First operand 23401 states and 32803 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:47:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:47:50,796 INFO L93 Difference]: Finished difference Result 47242 states and 66288 transitions. [2021-11-05 19:47:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:47:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-05 19:47:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:47:50,867 INFO L225 Difference]: With dead ends: 47242 [2021-11-05 19:47:50,868 INFO L226 Difference]: Without dead ends: 23883 [2021-11-05 19:47:50,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:47:50,912 INFO L933 BasicCegarLoop]: 8435 mSDtfsCounter, 265 mSDsluCounter, 8177 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1816.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 16612 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1948.99ms IncrementalHoareTripleChecker+Time [2021-11-05 19:47:50,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 16612 Invalid, 212 Unknown, 0 Unchecked, 14.74ms Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1948.99ms Time] [2021-11-05 19:47:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23883 states. [2021-11-05 19:47:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23883 to 23875. [2021-11-05 19:47:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23875 states, 23773 states have (on average 1.4102553316787954) internal successors, (33526), 23874 states have internal predecessors, (33526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:47:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23875 states to 23875 states and 33526 transitions. [2021-11-05 19:47:51,443 INFO L78 Accepts]: Start accepts. Automaton has 23875 states and 33526 transitions. Word has length 52 [2021-11-05 19:47:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:47:51,443 INFO L470 AbstractCegarLoop]: Abstraction has 23875 states and 33526 transitions. [2021-11-05 19:47:51,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:47:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 23875 states and 33526 transitions. [2021-11-05 19:47:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 19:47:51,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:47:51,448 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] [2021-11-05 19:47:51,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:47:51,449 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-05 19:47:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:47:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2052243934, now seen corresponding path program 1 times [2021-11-05 19:47:51,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:47:51,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271486613] [2021-11-05 19:47:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:47:51,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:47:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:47:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:47:52,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:47:52,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271486613] [2021-11-05 19:47:52,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271486613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:47:52,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:47:52,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:47:52,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315165525] [2021-11-05 19:47:52,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:47:52,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:47:52,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:47:52,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:47:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:47:52,230 INFO L87 Difference]: Start difference. First operand 23875 states and 33526 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:47:54,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:47:59,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:47:59,656 INFO L93 Difference]: Finished difference Result 118483 states and 166241 transitions. [2021-11-05 19:47:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:47:59,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2021-11-05 19:47:59,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:47:59,979 INFO L225 Difference]: With dead ends: 118483 [2021-11-05 19:47:59,979 INFO L226 Difference]: Without dead ends: 94650 [2021-11-05 19:48:00,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 139.38ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:48:00,054 INFO L933 BasicCegarLoop]: 8459 mSDtfsCounter, 24739 mSDsluCounter, 49344 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5662.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24739 SdHoareTripleChecker+Valid, 57803 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.56ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5896.42ms IncrementalHoareTripleChecker+Time [2021-11-05 19:48:00,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24739 Valid, 57803 Invalid, 592 Unknown, 0 Unchecked, 51.56ms Time], IncrementalHoareTripleChecker [77 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 5896.42ms Time] [2021-11-05 19:48:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94650 states. [2021-11-05 19:48:01,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94650 to 93992. [2021-11-05 19:48:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93992 states, 93890 states have (on average 1.4081478325700287) internal successors, (132211), 93991 states have internal predecessors, (132211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:48:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93992 states to 93992 states and 132211 transitions. [2021-11-05 19:48:02,141 INFO L78 Accepts]: Start accepts. Automaton has 93992 states and 132211 transitions. Word has length 52 [2021-11-05 19:48:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:48:02,142 INFO L470 AbstractCegarLoop]: Abstraction has 93992 states and 132211 transitions. [2021-11-05 19:48:02,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:48:02,142 INFO L276 IsEmpty]: Start isEmpty. Operand 93992 states and 132211 transitions. [2021-11-05 19:48:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 19:48:02,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:48:02,143 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, 1, 1] [2021-11-05 19:48:02,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:48:02,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-05 19:48:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:48:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1917962124, now seen corresponding path program 1 times [2021-11-05 19:48:02,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:48:02,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899132197] [2021-11-05 19:48:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:48:02,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:48:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:48:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:48:03,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:48:03,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899132197] [2021-11-05 19:48:03,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899132197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:48:03,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:48:03,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:48:03,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569690270] [2021-11-05 19:48:03,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:48:03,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:48:03,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:48:03,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:48:03,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:48:03,083 INFO L87 Difference]: Start difference. First operand 93992 states and 132211 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:48:05,286 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 [] [2021-11-05 19:48:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:48:14,055 INFO L93 Difference]: Finished difference Result 467606 states and 657492 transitions. [2021-11-05 19:48:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:48:14,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2021-11-05 19:48:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:48:14,923 INFO L225 Difference]: With dead ends: 467606 [2021-11-05 19:48:14,923 INFO L226 Difference]: Without dead ends: 373656 [2021-11-05 19:48:15,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 141.19ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:48:15,123 INFO L933 BasicCegarLoop]: 8410 mSDtfsCounter, 24834 mSDsluCounter, 49328 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5721.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24834 SdHoareTripleChecker+Valid, 57738 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.27ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5965.72ms IncrementalHoareTripleChecker+Time [2021-11-05 19:48:15,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24834 Valid, 57738 Invalid, 588 Unknown, 0 Unchecked, 49.27ms Time], IncrementalHoareTripleChecker [77 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 5965.72ms Time] [2021-11-05 19:48:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373656 states. [2021-11-05 19:48:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373656 to 372950. [2021-11-05 19:48:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372950 states, 372848 states have (on average 1.4063559412951123) internal successors, (524357), 372949 states have internal predecessors, (524357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:48:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372950 states to 372950 states and 524357 transitions. [2021-11-05 19:48:23,435 INFO L78 Accepts]: Start accepts. Automaton has 372950 states and 524357 transitions. Word has length 53 [2021-11-05 19:48:23,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:48:23,435 INFO L470 AbstractCegarLoop]: Abstraction has 372950 states and 524357 transitions. [2021-11-05 19:48:23,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:48:23,436 INFO L276 IsEmpty]: Start isEmpty. Operand 372950 states and 524357 transitions. [2021-11-05 19:48:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 19:48:23,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:48:23,437 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] [2021-11-05 19:48:23,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:48:23,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-05 19:48:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:48:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2050193419, now seen corresponding path program 1 times [2021-11-05 19:48:23,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:48:23,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152910473] [2021-11-05 19:48:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:48:23,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:48:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:48:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:48:24,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:48:24,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152910473] [2021-11-05 19:48:24,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152910473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:48:24,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:48:24,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:48:24,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123993648] [2021-11-05 19:48:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:48:24,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:48:24,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:48:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:48:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:48:24,708 INFO L87 Difference]: Start difference. First operand 372950 states and 524357 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:48:26,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []