./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--tty--n_r3964.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--tty--n_r3964.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 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 08:41:27,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 08:41:27,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 08:41:27,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 08:41:27,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 08:41:27,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 08:41:27,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 08:41:27,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 08:41:27,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 08:41:27,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 08:41:27,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 08:41:27,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 08:41:27,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 08:41:27,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 08:41:27,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 08:41:27,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 08:41:27,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 08:41:27,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 08:41:27,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 08:41:27,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 08:41:27,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 08:41:27,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 08:41:27,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 08:41:27,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 08:41:27,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 08:41:27,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 08:41:27,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 08:41:27,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 08:41:27,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 08:41:27,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 08:41:27,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 08:41:27,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 08:41:27,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 08:41:27,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 08:41:27,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 08:41:27,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 08:41:27,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 08:41:27,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 08:41:27,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 08:41:27,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 08:41:27,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 08:41:27,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 08:41:28,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 08:41:28,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 08:41:28,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 08:41:28,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 08:41:28,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 08:41:28,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 08:41:28,009 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 08:41:28,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 08:41:28,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 08:41:28,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 08:41:28,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 08:41:28,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 08:41:28,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 08:41:28,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 08:41:28,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 08:41:28,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 08:41:28,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 08:41:28,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 08:41:28,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 08:41:28,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:41:28,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 08:41:28,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 08:41:28,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 08:41:28,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 08:41:28,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 08:41:28,014 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 08:41:28,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 08:41:28,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 08:41:28,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 08:41:28,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 [2021-11-04 08:41:28,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 08:41:28,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 08:41:28,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 08:41:28,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 08:41:28,266 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 08:41:28,267 INFO L432 ainManager$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--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-04 08:41:28,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c683612fb/6f3d576a3e474917b96c43d8d61171c1/FLAG83fd797ce [2021-11-04 08:41:28,862 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 08:41:28,862 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--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-04 08:41:28,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c683612fb/6f3d576a3e474917b96c43d8d61171c1/FLAG83fd797ce [2021-11-04 08:41:29,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c683612fb/6f3d576a3e474917b96c43d8d61171c1 [2021-11-04 08:41:29,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 08:41:29,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 08:41:29,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 08:41:29,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 08:41:29,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 08:41:29,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:41:29" (1/1) ... [2021-11-04 08:41:29,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fba61bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:29, skipping insertion in model container [2021-11-04 08:41:29,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:41:29" (1/1) ... [2021-11-04 08:41:29,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 08:41:29,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 08:41:29,946 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--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-11-04 08:41:29,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:41:29,982 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 08:41:30,168 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--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-11-04 08:41:30,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:41:30,228 INFO L208 MainTranslator]: Completed translation [2021-11-04 08:41:30,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30 WrapperNode [2021-11-04 08:41:30,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 08:41:30,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 08:41:30,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 08:41:30,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 08:41:30,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:30,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:30,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 08:41:30,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 08:41:30,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 08:41:30,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 08:41:31,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:31,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:31,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:31,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:31,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:32,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:32,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:32,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 08:41:32,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 08:41:32,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 08:41:32,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 08:41:32,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (1/1) ... [2021-11-04 08:41:32,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:41:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:41:32,368 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 08:41:32,398 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 08:41:32,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 08:41:32,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 08:41:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 08:41:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 08:41:32,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 08:41:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 08:41:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 08:41:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 08:41:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 08:41:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 08:41:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 08:41:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 08:41:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 08:41:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 08:41:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 08:41:32,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 08:41:36,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 08:41:36,332 INFO L299 CfgBuilder]: Removed 7514 assume(true) statements. [2021-11-04 08:41:36,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:41:36 BoogieIcfgContainer [2021-11-04 08:41:36,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 08:41:36,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 08:41:36,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 08:41:36,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 08:41:36,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:41:29" (1/3) ... [2021-11-04 08:41:36,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e16f00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:41:36, skipping insertion in model container [2021-11-04 08:41:36,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:41:30" (2/3) ... [2021-11-04 08:41:36,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e16f00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:41:36, skipping insertion in model container [2021-11-04 08:41:36,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:41:36" (3/3) ... [2021-11-04 08:41:36,345 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-04 08:41:36,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 08:41:36,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-04 08:41:36,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 08:41:36,423 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 08:41:36,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-04 08:41:36,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 6445 states, 6402 states have (on average 1.458294283036551) internal successors, (9336), 6444 states have internal predecessors, (9336), 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 08:41:36,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-04 08:41:36,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:41:36,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:41:36,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 08:41:36,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:41:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash 229863683, now seen corresponding path program 1 times [2021-11-04 08:41:36,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:41:36,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010288117] [2021-11-04 08:41:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:41:36,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:41:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:41:36,836 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 08:41:36,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:41:36,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010288117] [2021-11-04 08:41:36,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010288117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:41:36,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:41:36,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 08:41:36,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779823401] [2021-11-04 08:41:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:41:36,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 08:41:36,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:41:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 08:41:36,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:41:36,881 INFO L87 Difference]: Start difference. First operand has 6445 states, 6402 states have (on average 1.458294283036551) internal successors, (9336), 6444 states have internal predecessors, (9336), 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 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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 08:41:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:41:45,986 INFO L93 Difference]: Finished difference Result 12886 states and 18666 transitions. [2021-11-04 08:41:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 08:41:45,992 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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 63 [2021-11-04 08:41:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:41:46,033 INFO L225 Difference]: With dead ends: 12886 [2021-11-04 08:41:46,034 INFO L226 Difference]: Without dead ends: 6434 [2021-11-04 08:41:46,047 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 08:41:46,050 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7128.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 9237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8784.52ms IncrementalHoareTripleChecker+Time [2021-11-04 08:41:46,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 9237 Unknown, 0 Unchecked, 14.55ms Time], IncrementalHoareTripleChecker [0 Valid, 9237 Invalid, 0 Unknown, 0 Unchecked, 8784.52ms Time] [2021-11-04 08:41:46,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2021-11-04 08:41:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 6434. [2021-11-04 08:41:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 6392 states have (on average 1.4430538172715894) internal successors, (9224), 6433 states have internal predecessors, (9224), 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 08:41:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 9224 transitions. [2021-11-04 08:41:46,279 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 9224 transitions. Word has length 63 [2021-11-04 08:41:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:41:46,279 INFO L470 AbstractCegarLoop]: Abstraction has 6434 states and 9224 transitions. [2021-11-04 08:41:46,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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 08:41:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 9224 transitions. [2021-11-04 08:41:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-04 08:41:46,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:41:46,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:41:46,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 08:41:46,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 08:41:46,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:41:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1966664585, now seen corresponding path program 1 times [2021-11-04 08:41:46,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:41:46,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421695940] [2021-11-04 08:41:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:41:46,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:41:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:41:46,492 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 08:41:46,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:41:46,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421695940] [2021-11-04 08:41:46,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421695940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:41:46,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:41:46,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:41:46,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6670481] [2021-11-04 08:41:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:41:46,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:41:46,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:41:46,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:41:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:41:46,497 INFO L87 Difference]: Start difference. First operand 6434 states and 9224 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 08:41:56,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:42:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:42:01,037 INFO L93 Difference]: Finished difference Result 12826 states and 18403 transitions. [2021-11-04 08:42:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:42:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-04 08:42:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:42:01,063 INFO L225 Difference]: With dead ends: 12826 [2021-11-04 08:42:01,064 INFO L226 Difference]: Without dead ends: 6436 [2021-11-04 08:42:01,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:42:01,075 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 9208 mSDsCounter, 0 mSdLazyCounter, 18444 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12043.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18444 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14245.00ms IncrementalHoareTripleChecker+Time [2021-11-04 08:42:01,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 18447 Unknown, 0 Unchecked, 32.17ms Time], IncrementalHoareTripleChecker [2 Valid, 18444 Invalid, 1 Unknown, 0 Unchecked, 14245.00ms Time] [2021-11-04 08:42:01,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6436 states. [2021-11-04 08:42:01,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6436 to 6436. [2021-11-04 08:42:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6436 states, 6394 states have (on average 1.4429152330309665) internal successors, (9226), 6435 states have internal predecessors, (9226), 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 08:42:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6436 states to 6436 states and 9226 transitions. [2021-11-04 08:42:01,237 INFO L78 Accepts]: Start accepts. Automaton has 6436 states and 9226 transitions. Word has length 63 [2021-11-04 08:42:01,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:42:01,238 INFO L470 AbstractCegarLoop]: Abstraction has 6436 states and 9226 transitions. [2021-11-04 08:42:01,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 08:42:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 6436 states and 9226 transitions. [2021-11-04 08:42:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-04 08:42:01,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:42:01,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:42:01,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 08:42:01,243 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 08:42:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:42:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash -791679883, now seen corresponding path program 1 times [2021-11-04 08:42:01,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:42:01,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283181727] [2021-11-04 08:42:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:42:01,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:42:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:42:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:42:01,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:42:01,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283181727] [2021-11-04 08:42:01,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283181727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:42:01,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:42:01,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:42:01,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112834177] [2021-11-04 08:42:01,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:42:01,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:42:01,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:42:01,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:42:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:42:01,358 INFO L87 Difference]: Start difference. First operand 6436 states and 9226 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 08:42:10,230 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 [] [2021-11-04 08:42:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:42:14,738 INFO L93 Difference]: Finished difference Result 12827 states and 18404 transitions. [2021-11-04 08:42:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:42:14,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-04 08:42:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:42:14,763 INFO L225 Difference]: With dead ends: 12827 [2021-11-04 08:42:14,763 INFO L226 Difference]: Without dead ends: 6439 [2021-11-04 08:42:14,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:42:14,776 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 9208 mSDsCounter, 0 mSdLazyCounter, 18443 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11093.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.89ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18443 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13134.66ms IncrementalHoareTripleChecker+Time [2021-11-04 08:42:14,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 18448 Unknown, 0 Unchecked, 23.89ms Time], IncrementalHoareTripleChecker [4 Valid, 18443 Invalid, 1 Unknown, 0 Unchecked, 13134.66ms Time] [2021-11-04 08:42:14,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6439 states. [2021-11-04 08:42:14,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6439 to 6439. [2021-11-04 08:42:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6439 states, 6397 states have (on average 1.4427075191496013) internal successors, (9229), 6438 states have internal predecessors, (9229), 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 08:42:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6439 states to 6439 states and 9229 transitions. [2021-11-04 08:42:14,901 INFO L78 Accepts]: Start accepts. Automaton has 6439 states and 9229 transitions. Word has length 65 [2021-11-04 08:42:14,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:42:14,902 INFO L470 AbstractCegarLoop]: Abstraction has 6439 states and 9229 transitions. [2021-11-04 08:42:14,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 08:42:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 6439 states and 9229 transitions. [2021-11-04 08:42:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-04 08:42:14,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:42:14,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:42:14,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 08:42:14,904 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 08:42:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:42:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash -421477357, now seen corresponding path program 1 times [2021-11-04 08:42:14,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:42:14,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666848668] [2021-11-04 08:42:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:42:14,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:42:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:42:14,972 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 08:42:14,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:42:14,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666848668] [2021-11-04 08:42:14,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666848668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:42:14,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:42:14,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:42:14,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545382896] [2021-11-04 08:42:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:42:14,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:42:14,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:42:14,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:42:14,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:42:14,975 INFO L87 Difference]: Start difference. First operand 6439 states and 9229 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:42:26,925 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 [] [2021-11-04 08:42:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:42:30,857 INFO L93 Difference]: Finished difference Result 16865 states and 24163 transitions. [2021-11-04 08:42:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:42:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-04 08:42:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:42:30,891 INFO L225 Difference]: With dead ends: 16865 [2021-11-04 08:42:30,891 INFO L226 Difference]: Without dead ends: 10490 [2021-11-04 08:42:30,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:42:30,907 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5838 mSDsluCounter, 9119 mSDsCounter, 0 mSdLazyCounter, 18377 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12980.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5838 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.37ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15554.64ms IncrementalHoareTripleChecker+Time [2021-11-04 08:42:30,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5838 Valid, 0 Invalid, 18380 Unknown, 0 Unchecked, 27.37ms Time], IncrementalHoareTripleChecker [2 Valid, 18377 Invalid, 1 Unknown, 0 Unchecked, 15554.64ms Time] [2021-11-04 08:42:30,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2021-11-04 08:42:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 10442. [2021-11-04 08:42:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10400 states have (on average 1.440576923076923) internal successors, (14982), 10441 states have internal predecessors, (14982), 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 08:42:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 14982 transitions. [2021-11-04 08:42:31,119 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 14982 transitions. Word has length 68 [2021-11-04 08:42:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:42:31,120 INFO L470 AbstractCegarLoop]: Abstraction has 10442 states and 14982 transitions. [2021-11-04 08:42:31,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:42:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 14982 transitions. [2021-11-04 08:42:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-04 08:42:31,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:42:31,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:42:31,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 08:42:31,124 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 08:42:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:42:31,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1191694281, now seen corresponding path program 1 times [2021-11-04 08:42:31,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:42:31,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124331787] [2021-11-04 08:42:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:42:31,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:42:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:42:31,233 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 08:42:31,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:42:31,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124331787] [2021-11-04 08:42:31,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124331787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:42:31,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:42:31,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 08:42:31,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546430178] [2021-11-04 08:42:31,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:42:31,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:42:31,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:42:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:42:31,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:42:31,236 INFO L87 Difference]: Start difference. First operand 10442 states and 14982 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 08:42:46,827 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 [] [2021-11-04 08:43:06,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:43:06,258 INFO L93 Difference]: Finished difference Result 47539 states and 68028 transitions. [2021-11-04 08:43:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:43:06,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2021-11-04 08:43:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:43:06,356 INFO L225 Difference]: With dead ends: 47539 [2021-11-04 08:43:06,357 INFO L226 Difference]: Without dead ends: 37161 [2021-11-04 08:43:06,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.73ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:43:06,386 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 31084 mSDsluCounter, 32476 mSDsCounter, 0 mSdLazyCounter, 44592 mSolverCounterSat, 285 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28148.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31084 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.78ms SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 44592 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34018.43ms IncrementalHoareTripleChecker+Time [2021-11-04 08:43:06,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31084 Valid, 0 Invalid, 44878 Unknown, 0 Unchecked, 89.78ms Time], IncrementalHoareTripleChecker [285 Valid, 44592 Invalid, 1 Unknown, 0 Unchecked, 34018.43ms Time] [2021-11-04 08:43:06,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37161 states. [2021-11-04 08:43:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37161 to 36878. [2021-11-04 08:43:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36878 states, 36836 states have (on average 1.428168096427408) internal successors, (52608), 36877 states have internal predecessors, (52608), 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 08:43:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36878 states to 36878 states and 52608 transitions. [2021-11-04 08:43:07,156 INFO L78 Accepts]: Start accepts. Automaton has 36878 states and 52608 transitions. Word has length 71 [2021-11-04 08:43:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:43:07,156 INFO L470 AbstractCegarLoop]: Abstraction has 36878 states and 52608 transitions. [2021-11-04 08:43:07,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 08:43:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 36878 states and 52608 transitions. [2021-11-04 08:43:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-04 08:43:07,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:43:07,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:43:07,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 08:43:07,159 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 08:43:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:43:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1516652010, now seen corresponding path program 1 times [2021-11-04 08:43:07,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:43:07,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698467044] [2021-11-04 08:43:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:43:07,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:43:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:43:07,233 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 08:43:07,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:43:07,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698467044] [2021-11-04 08:43:07,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698467044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:43:07,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:43:07,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 08:43:07,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036956533] [2021-11-04 08:43:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:43:07,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:43:07,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:43:07,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:43:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:43:07,236 INFO L87 Difference]: Start difference. First operand 36878 states and 52608 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 08:43:18,489 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 [] [2021-11-04 08:43:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:43:42,558 INFO L93 Difference]: Finished difference Result 167809 states and 239044 transitions. [2021-11-04 08:43:42,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:43:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2021-11-04 08:43:42,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:43:42,905 INFO L225 Difference]: With dead ends: 167809 [2021-11-04 08:43:42,906 INFO L226 Difference]: Without dead ends: 130995 [2021-11-04 08:43:42,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.69ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:43:42,969 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32314 mSDsluCounter, 31255 mSDsCounter, 0 mSdLazyCounter, 42025 mSolverCounterSat, 297 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27224.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32314 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.28ms SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 42025 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32901.99ms IncrementalHoareTripleChecker+Time [2021-11-04 08:43:42,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32314 Valid, 0 Invalid, 42323 Unknown, 0 Unchecked, 79.28ms Time], IncrementalHoareTripleChecker [297 Valid, 42025 Invalid, 1 Unknown, 0 Unchecked, 32901.99ms Time] [2021-11-04 08:43:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130995 states. [2021-11-04 08:43:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130995 to 130670. [2021-11-04 08:43:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130670 states, 130628 states have (on average 1.4187769850261813) internal successors, (185332), 130669 states have internal predecessors, (185332), 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 08:43:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130670 states to 130670 states and 185332 transitions. [2021-11-04 08:43:46,322 INFO L78 Accepts]: Start accepts. Automaton has 130670 states and 185332 transitions. Word has length 72 [2021-11-04 08:43:46,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:43:46,323 INFO L470 AbstractCegarLoop]: Abstraction has 130670 states and 185332 transitions. [2021-11-04 08:43:46,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 08:43:46,323 INFO L276 IsEmpty]: Start isEmpty. Operand 130670 states and 185332 transitions. [2021-11-04 08:43:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-04 08:43:46,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:43:46,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:43:46,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 08:43:46,325 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 08:43:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:43:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1149334156, now seen corresponding path program 1 times [2021-11-04 08:43:46,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:43:46,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824813707] [2021-11-04 08:43:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:43:46,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:43:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:43:46,397 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 08:43:46,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:43:46,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824813707] [2021-11-04 08:43:46,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824813707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:43:46,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:43:46,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 08:43:46,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494488418] [2021-11-04 08:43:46,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:43:46,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:43:46,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:43:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:43:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:43:46,401 INFO L87 Difference]: Start difference. First operand 130670 states and 185332 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 08:43:54,576 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 [] [2021-11-04 08:44:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:44:27,847 INFO L93 Difference]: Finished difference Result 589537 states and 835420 transitions. [2021-11-04 08:44:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:44:27,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2021-11-04 08:44:27,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:44:29,320 INFO L225 Difference]: With dead ends: 589537 [2021-11-04 08:44:29,321 INFO L226 Difference]: Without dead ends: 458931 [2021-11-04 08:44:29,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.30ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:44:29,623 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 35998 mSDsluCounter, 30478 mSDsCounter, 0 mSdLazyCounter, 41138 mSolverCounterSat, 405 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28268.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35998 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 149.27ms SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 41138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34074.37ms IncrementalHoareTripleChecker+Time [2021-11-04 08:44:29,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35998 Valid, 0 Invalid, 41544 Unknown, 0 Unchecked, 149.27ms Time], IncrementalHoareTripleChecker [405 Valid, 41138 Invalid, 1 Unknown, 0 Unchecked, 34074.37ms Time] [2021-11-04 08:44:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458931 states. [2021-11-04 08:44:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458931 to 458534. [2021-11-04 08:44:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458534 states, 458492 states have (on average 1.4111652984130585) internal successors, (647008), 458533 states have internal predecessors, (647008), 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 08:44:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458534 states to 458534 states and 647008 transitions. [2021-11-04 08:44:40,849 INFO L78 Accepts]: Start accepts. Automaton has 458534 states and 647008 transitions. Word has length 73 [2021-11-04 08:44:40,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:44:40,849 INFO L470 AbstractCegarLoop]: Abstraction has 458534 states and 647008 transitions. [2021-11-04 08:44:40,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 08:44:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand 458534 states and 647008 transitions. [2021-11-04 08:44:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 08:44:40,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:44:40,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:44:40,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 08:44:40,851 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 08:44:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:44:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash -453232481, now seen corresponding path program 1 times [2021-11-04 08:44:40,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:44:40,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495060572] [2021-11-04 08:44:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:44:40,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:44:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:44:40,928 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 08:44:40,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:44:40,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495060572] [2021-11-04 08:44:40,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495060572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:44:40,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:44:40,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 08:44:40,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765085231] [2021-11-04 08:44:40,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:44:40,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:44:40,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:44:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:44:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:44:40,931 INFO L87 Difference]: Start difference. First operand 458534 states and 647008 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:44:45,082 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 []