./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.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 d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 04:19:28,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:19:28,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:19:28,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:19:28,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:19:28,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:19:28,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:19:28,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:19:28,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:19:28,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:19:28,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:19:28,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:19:28,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:19:28,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:19:28,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:19:28,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:19:28,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:19:28,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:19:28,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:19:28,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:19:28,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:19:28,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:19:28,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:19:28,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:19:28,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:19:28,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:19:28,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:19:28,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:19:28,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:19:28,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:19:28,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:19:28,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:19:28,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:19:28,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:19:28,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:19:28,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:19:28,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:19:28,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:19:28,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:19:28,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:19:28,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:19:28,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:19:28,470 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:19:28,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:19:28,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:19:28,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:19:28,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:19:28,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:19:28,472 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:19:28,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:19:28,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:19:28,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:19:28,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:19:28,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:19:28,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:19:28,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:19:28,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:19:28,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:19:28,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:19:28,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:19:28,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:19:28,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:19:28,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:19:28,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:19:28,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:19:28,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:19:28,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:19:28,476 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:19:28,476 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:19:28,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:19:28,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:19:28,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2021-11-04 04:19:28,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:19:28,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:19:28,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:19:28,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:19:28,717 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:19:28,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-04 04:19:28,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d0f4a31/b2de370065f5401a8c9dbb40b4668091/FLAGbcb0d3d13 [2021-11-04 04:19:29,352 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:19:29,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-04 04:19:29,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d0f4a31/b2de370065f5401a8c9dbb40b4668091/FLAGbcb0d3d13 [2021-11-04 04:19:29,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d0f4a31/b2de370065f5401a8c9dbb40b4668091 [2021-11-04 04:19:29,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:19:29,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:19:29,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:19:29,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:19:29,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:19:29,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:19:29" (1/1) ... [2021-11-04 04:19:29,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e19b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:29, skipping insertion in model container [2021-11-04 04:19:29,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:19:29" (1/1) ... [2021-11-04 04:19:29,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:19:29,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:19:30,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-11-04 04:19:31,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:19:31,380 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:19:31,525 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-11-04 04:19:31,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:19:31,732 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:19:31,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31 WrapperNode [2021-11-04 04:19:31,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:19:31,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:19:31,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:19:31,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:19:31,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:31,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:32,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:19:32,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:19:32,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:19:32,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:19:32,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:32,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:32,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:32,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:32,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:32,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:32,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:33,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:19:33,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:19:33,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:19:33,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:19:33,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (1/1) ... [2021-11-04 04:19:33,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:19:33,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:19:33,133 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 04:19:33,179 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 04:19:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 04:19:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 04:19:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:19:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:19:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-04 04:19:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:19:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:19:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 04:19:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 04:19:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:19:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:19:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:19:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:19:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:19:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:19:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:19:45,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:19:45,639 INFO L299 CfgBuilder]: Removed 2280 assume(true) statements. [2021-11-04 04:19:45,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:19:45 BoogieIcfgContainer [2021-11-04 04:19:45,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:19:45,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:19:45,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:19:45,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:19:45,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:19:29" (1/3) ... [2021-11-04 04:19:45,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0e5dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:19:45, skipping insertion in model container [2021-11-04 04:19:45,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:19:31" (2/3) ... [2021-11-04 04:19:45,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0e5dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:19:45, skipping insertion in model container [2021-11-04 04:19:45,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:19:45" (3/3) ... [2021-11-04 04:19:45,652 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-11-04 04:19:45,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:19:45,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 04:19:45,704 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:19:45,710 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 04:19:45,711 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 04:19:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 2753 states, 2751 states have (on average 1.490367139222101) internal successors, (4100), 2752 states have internal predecessors, (4100), 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 04:19:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-04 04:19:45,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:19:45,763 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] [2021-11-04 04:19:45,763 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:19:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:19:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash -883522735, now seen corresponding path program 1 times [2021-11-04 04:19:45,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:19:45,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077123957] [2021-11-04 04:19:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:19:45,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:19:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:19:46,453 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 04:19:46,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:19:46,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077123957] [2021-11-04 04:19:46,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077123957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:19:46,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:19:46,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:19:46,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514545351] [2021-11-04 04:19:46,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:19:46,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:19:46,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:19:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:19:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:19:46,493 INFO L87 Difference]: Start difference. First operand has 2753 states, 2751 states have (on average 1.490367139222101) internal successors, (4100), 2752 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 04:19:48,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:20:15,408 WARN L515 Checker$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 04:20:18,586 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 04:20:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:20:27,390 INFO L93 Difference]: Finished difference Result 5504 states and 8199 transitions. [2021-11-04 04:20:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:20:27,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-04 04:20:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:20:27,417 INFO L225 Difference]: With dead ends: 5504 [2021-11-04 04:20:27,417 INFO L226 Difference]: Without dead ends: 2747 [2021-11-04 04:20:27,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:20:27,427 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3938 mSDsCounter, 0 mSdLazyCounter, 8007 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37883.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.19ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8007 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40296.13ms IncrementalHoareTripleChecker+Time [2021-11-04 04:20:27,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 8014 Unknown, 0 Unchecked, 78.19ms Time], IncrementalHoareTripleChecker [4 Valid, 8007 Invalid, 3 Unknown, 0 Unchecked, 40296.13ms Time] [2021-11-04 04:20:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-11-04 04:20:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2747. [2021-11-04 04:20:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2747 states, 2746 states have (on average 1.4573925710123816) internal successors, (4002), 2746 states have internal predecessors, (4002), 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 04:20:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 4002 transitions. [2021-11-04 04:20:27,525 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 4002 transitions. Word has length 38 [2021-11-04 04:20:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:20:27,527 INFO L470 AbstractCegarLoop]: Abstraction has 2747 states and 4002 transitions. [2021-11-04 04:20:27,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 04:20:27,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 4002 transitions. [2021-11-04 04:20:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-04 04:20:27,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:20:27,536 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] [2021-11-04 04:20:27,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:20:27,537 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:20:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:20:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2084117284, now seen corresponding path program 1 times [2021-11-04 04:20:27,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:20:27,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354264352] [2021-11-04 04:20:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:20:27,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:20:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:20:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:20:27,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:20:27,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354264352] [2021-11-04 04:20:27,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354264352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:20:27,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:20:27,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:20:27,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10759368] [2021-11-04 04:20:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:20:27,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:20:27,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:20:27,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:20:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:20:27,917 INFO L87 Difference]: Start difference. First operand 2747 states and 4002 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:20:30,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:21:01,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:21:05,189 WARN L515 Checker$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 04:21:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:21:16,381 INFO L93 Difference]: Finished difference Result 5448 states and 7949 transitions. [2021-11-04 04:21:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:21:16,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-04 04:21:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:21:16,390 INFO L225 Difference]: With dead ends: 5448 [2021-11-04 04:21:16,390 INFO L226 Difference]: Without dead ends: 2748 [2021-11-04 04:21:16,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:21:16,394 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 7991 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45387.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7991 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48045.92ms IncrementalHoareTripleChecker+Time [2021-11-04 04:21:16,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 7994 Unknown, 0 Unchecked, 40.82ms Time], IncrementalHoareTripleChecker [0 Valid, 7991 Invalid, 3 Unknown, 0 Unchecked, 48045.92ms Time] [2021-11-04 04:21:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2021-11-04 04:21:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2748. [2021-11-04 04:21:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2747 states have (on average 1.4572260647979614) internal successors, (4003), 2747 states have internal predecessors, (4003), 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 04:21:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 4003 transitions. [2021-11-04 04:21:16,428 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 4003 transitions. Word has length 39 [2021-11-04 04:21:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:21:16,428 INFO L470 AbstractCegarLoop]: Abstraction has 2748 states and 4003 transitions. [2021-11-04 04:21:16,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:21:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 4003 transitions. [2021-11-04 04:21:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-04 04:21:16,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:21:16,429 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] [2021-11-04 04:21:16,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 04:21:16,430 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:21:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:21:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1447210349, now seen corresponding path program 1 times [2021-11-04 04:21:16,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:21:16,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852067430] [2021-11-04 04:21:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:21:16,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:21:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:21:16,695 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 04:21:16,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:21:16,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852067430] [2021-11-04 04:21:16,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852067430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:21:16,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:21:16,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:21:16,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342200233] [2021-11-04 04:21:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:21:16,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:21:16,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:21:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:21:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:21:16,697 INFO L87 Difference]: Start difference. First operand 2748 states and 4003 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 04:21:18,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:21:47,424 WARN L515 Checker$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 04:21:51,150 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 04:22:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:22:11,074 INFO L93 Difference]: Finished difference Result 8089 states and 11820 transitions. [2021-11-04 04:22:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:22:11,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-04 04:22:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:22:11,100 INFO L225 Difference]: With dead ends: 8089 [2021-11-04 04:22:11,101 INFO L226 Difference]: Without dead ends: 5390 [2021-11-04 04:22:11,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:22:11,112 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3877 mSDsluCounter, 3970 mSDsCounter, 0 mSdLazyCounter, 7974 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50557.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3877 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7974 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53702.75ms IncrementalHoareTripleChecker+Time [2021-11-04 04:22:11,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3877 Valid, 0 Invalid, 7980 Unknown, 0 Unchecked, 67.93ms Time], IncrementalHoareTripleChecker [3 Valid, 7974 Invalid, 3 Unknown, 0 Unchecked, 53702.75ms Time] [2021-11-04 04:22:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2021-11-04 04:22:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5390. [2021-11-04 04:22:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 1.460938949712377) internal successors, (7873), 5389 states have internal predecessors, (7873), 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 04:22:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 7873 transitions. [2021-11-04 04:22:11,309 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 7873 transitions. Word has length 40 [2021-11-04 04:22:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:22:11,310 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 7873 transitions. [2021-11-04 04:22:11,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 04:22:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 7873 transitions. [2021-11-04 04:22:11,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-04 04:22:11,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:22:11,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:22:11,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 04:22:11,313 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:22:11,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:22:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1376861974, now seen corresponding path program 1 times [2021-11-04 04:22:11,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:22:11,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350202650] [2021-11-04 04:22:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:22:11,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:22:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:22:11,693 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 04:22:11,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:22:11,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350202650] [2021-11-04 04:22:11,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350202650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:22:11,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:22:11,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:22:11,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409146065] [2021-11-04 04:22:11,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:22:11,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:22:11,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:22:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:22:11,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:22:11,695 INFO L87 Difference]: Start difference. First operand 5390 states and 7873 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:22:13,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:23:05,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:23:18,685 WARN L515 Checker$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 04:23:24,447 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 04:24:03,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:24:03,523 INFO L93 Difference]: Finished difference Result 16050 states and 23471 transitions. [2021-11-04 04:24:03,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:24:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-04 04:24:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:24:03,551 INFO L225 Difference]: With dead ends: 16050 [2021-11-04 04:24:03,551 INFO L226 Difference]: Without dead ends: 10699 [2021-11-04 04:24:03,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 161.70ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:24:03,558 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3888 mSDsluCounter, 11936 mSDsCounter, 0 mSdLazyCounter, 15979 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103129.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3888 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 124.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15979 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110757.65ms IncrementalHoareTripleChecker+Time [2021-11-04 04:24:03,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3888 Valid, 0 Invalid, 15983 Unknown, 0 Unchecked, 124.44ms Time], IncrementalHoareTripleChecker [1 Valid, 15979 Invalid, 3 Unknown, 0 Unchecked, 110757.65ms Time] [2021-11-04 04:24:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10699 states. [2021-11-04 04:24:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10699 to 10683. [2021-11-04 04:24:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10683 states, 10682 states have (on average 1.4623665980153528) internal successors, (15621), 10682 states have internal predecessors, (15621), 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 04:24:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10683 states to 10683 states and 15621 transitions. [2021-11-04 04:24:03,731 INFO L78 Accepts]: Start accepts. Automaton has 10683 states and 15621 transitions. Word has length 48 [2021-11-04 04:24:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:24:03,733 INFO L470 AbstractCegarLoop]: Abstraction has 10683 states and 15621 transitions. [2021-11-04 04:24:03,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:24:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10683 states and 15621 transitions. [2021-11-04 04:24:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-04 04:24:03,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:24:03,738 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:24:03,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 04:24:03,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:24:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:24:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1044322540, now seen corresponding path program 1 times [2021-11-04 04:24:03,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:24:03,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243351391] [2021-11-04 04:24:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:24:03,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:24:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:24:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:24:03,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:24:03,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243351391] [2021-11-04 04:24:03,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243351391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:24:03,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:24:03,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:24:03,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302218269] [2021-11-04 04:24:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:24:03,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:24:03,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:24:03,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:24:03,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:24:03,999 INFO L87 Difference]: Start difference. First operand 10683 states and 15621 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 04:24:06,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:24:09,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:24:33,375 WARN L515 Checker$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 04:24:37,474 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 04:25:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:25:05,333 INFO L93 Difference]: Finished difference Result 23211 states and 33865 transitions. [2021-11-04 04:25:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:25:05,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-04 04:25:05,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:25:05,385 INFO L225 Difference]: With dead ends: 23211 [2021-11-04 04:25:05,385 INFO L226 Difference]: Without dead ends: 12577 [2021-11-04 04:25:05,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:25:05,407 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 688 mSDsluCounter, 3938 mSDsCounter, 0 mSdLazyCounter, 8001 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56465.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8001 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60776.78ms IncrementalHoareTripleChecker+Time [2021-11-04 04:25:05,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 0 Invalid, 8005 Unknown, 0 Unchecked, 39.62ms Time], IncrementalHoareTripleChecker [1 Valid, 8001 Invalid, 3 Unknown, 0 Unchecked, 60776.78ms Time] [2021-11-04 04:25:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12577 states. [2021-11-04 04:25:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12577 to 12565. [2021-11-04 04:25:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12565 states, 12564 states have (on average 1.455507800063674) internal successors, (18287), 12564 states have internal predecessors, (18287), 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 04:25:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12565 states to 12565 states and 18287 transitions. [2021-11-04 04:25:05,617 INFO L78 Accepts]: Start accepts. Automaton has 12565 states and 18287 transitions. Word has length 79 [2021-11-04 04:25:05,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:25:05,617 INFO L470 AbstractCegarLoop]: Abstraction has 12565 states and 18287 transitions. [2021-11-04 04:25:05,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 04:25:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 12565 states and 18287 transitions. [2021-11-04 04:25:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 04:25:05,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:25:05,622 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:25:05,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 04:25:05,622 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:25:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:25:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1243246926, now seen corresponding path program 1 times [2021-11-04 04:25:05,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:25:05,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317757425] [2021-11-04 04:25:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:25:05,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:25:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:25:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:25:05,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:25:05,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317757425] [2021-11-04 04:25:05,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317757425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:25:05,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:25:05,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:25:05,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404911710] [2021-11-04 04:25:05,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:25:05,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:25:05,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:25:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:25:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:25:05,939 INFO L87 Difference]: Start difference. First operand 12565 states and 18287 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 04:25:08,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:25:16,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:25:59,281 WARN L515 Checker$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 04:26:03,887 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 04:26:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:26:27,871 INFO L93 Difference]: Finished difference Result 33999 states and 49660 transitions. [2021-11-04 04:26:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:26:27,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-04 04:26:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:26:27,931 INFO L225 Difference]: With dead ends: 33999 [2021-11-04 04:26:27,931 INFO L226 Difference]: Without dead ends: 21483 [2021-11-04 04:26:27,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:26:27,954 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3254 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 11191 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75305.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11191 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81116.11ms IncrementalHoareTripleChecker+Time [2021-11-04 04:26:27,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3254 Valid, 0 Invalid, 11196 Unknown, 0 Unchecked, 52.84ms Time], IncrementalHoareTripleChecker [2 Valid, 11191 Invalid, 3 Unknown, 0 Unchecked, 81116.11ms Time] [2021-11-04 04:26:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21483 states. [2021-11-04 04:26:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21483 to 21465. [2021-11-04 04:26:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21465 states, 21464 states have (on average 1.4632407752515841) internal successors, (31407), 21464 states have internal predecessors, (31407), 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 04:26:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21465 states to 21465 states and 31407 transitions. [2021-11-04 04:26:28,418 INFO L78 Accepts]: Start accepts. Automaton has 21465 states and 31407 transitions. Word has length 83 [2021-11-04 04:26:28,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:26:28,420 INFO L470 AbstractCegarLoop]: Abstraction has 21465 states and 31407 transitions. [2021-11-04 04:26:28,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 04:26:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand 21465 states and 31407 transitions. [2021-11-04 04:26:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-04 04:26:28,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:26:28,429 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:26:28,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 04:26:28,429 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:26:28,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:26:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 337282533, now seen corresponding path program 1 times [2021-11-04 04:26:28,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:26:28,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780115852] [2021-11-04 04:26:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:26:28,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:26:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:26:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 04:26:28,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:26:28,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780115852] [2021-11-04 04:26:28,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780115852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:26:28,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:26:28,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:26:28,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797764536] [2021-11-04 04:26:28,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:26:28,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:26:28,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:26:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:26:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:26:28,840 INFO L87 Difference]: Start difference. First operand 21465 states and 31407 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 04:26:31,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:26:45,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:27:27,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:27:34,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:27:46,194 WARN L515 Checker$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 04:27:53,578 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 04:28:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:28:57,481 INFO L93 Difference]: Finished difference Result 106724 states and 156245 transitions. [2021-11-04 04:28:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:28:57,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 95 [2021-11-04 04:28:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:28:57,635 INFO L225 Difference]: With dead ends: 106724 [2021-11-04 04:28:57,635 INFO L226 Difference]: Without dead ends: 85308 [2021-11-04 04:28:57,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 143.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:28:57,685 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11662 mSDsluCounter, 11828 mSDsCounter, 0 mSdLazyCounter, 19778 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135974.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11662 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 201.60ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 19778 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146155.35ms IncrementalHoareTripleChecker+Time [2021-11-04 04:28:57,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11662 Valid, 0 Invalid, 19794 Unknown, 0 Unchecked, 201.60ms Time], IncrementalHoareTripleChecker [13 Valid, 19778 Invalid, 3 Unknown, 0 Unchecked, 146155.35ms Time] [2021-11-04 04:28:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85308 states. [2021-11-04 04:28:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85308 to 21481. [2021-11-04 04:28:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21481 states, 21480 states have (on average 1.4628957169459962) internal successors, (31423), 21480 states have internal predecessors, (31423), 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 04:28:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21481 states to 21481 states and 31423 transitions. [2021-11-04 04:28:58,565 INFO L78 Accepts]: Start accepts. Automaton has 21481 states and 31423 transitions. Word has length 95 [2021-11-04 04:28:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:28:58,565 INFO L470 AbstractCegarLoop]: Abstraction has 21481 states and 31423 transitions. [2021-11-04 04:28:58,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 04:28:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 21481 states and 31423 transitions. [2021-11-04 04:28:58,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-04 04:28:58,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:28:58,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:58,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 04:28:58,579 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:28:58,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:28:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1158132929, now seen corresponding path program 1 times [2021-11-04 04:28:58,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:28:58,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068125743] [2021-11-04 04:28:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:28:58,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:28:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:28:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 04:28:58,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:28:58,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068125743] [2021-11-04 04:28:58,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068125743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:28:58,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:28:58,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:28:58,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19600621] [2021-11-04 04:28:58,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:28:58,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:28:58,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:28:58,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:28:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:28:58,911 INFO L87 Difference]: Start difference. First operand 21481 states and 31423 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 04:29:01,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:30:08,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:30:14,545 WARN L515 Checker$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 04:30:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:30:58,028 INFO L93 Difference]: Finished difference Result 64317 states and 94106 transitions. [2021-11-04 04:30:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:30:58,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-04 04:30:58,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:30:58,088 INFO L225 Difference]: With dead ends: 64317 [2021-11-04 04:30:58,088 INFO L226 Difference]: Without dead ends: 42885 [2021-11-04 04:30:58,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:30:58,111 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6644 mSDsluCounter, 9158 mSDsCounter, 0 mSdLazyCounter, 17051 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109561.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6644 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 130.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17051 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117230.25ms IncrementalHoareTripleChecker+Time [2021-11-04 04:30:58,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6644 Valid, 0 Invalid, 17054 Unknown, 0 Unchecked, 130.06ms Time], IncrementalHoareTripleChecker [0 Valid, 17051 Invalid, 3 Unknown, 0 Unchecked, 117230.25ms Time] [2021-11-04 04:30:58,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42885 states. [2021-11-04 04:30:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42885 to 21481. [2021-11-04 04:30:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21481 states, 21480 states have (on average 1.4625232774674115) internal successors, (31415), 21480 states have internal predecessors, (31415), 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 04:30:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21481 states to 21481 states and 31415 transitions. [2021-11-04 04:30:58,595 INFO L78 Accepts]: Start accepts. Automaton has 21481 states and 31415 transitions. Word has length 98 [2021-11-04 04:30:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:30:58,596 INFO L470 AbstractCegarLoop]: Abstraction has 21481 states and 31415 transitions. [2021-11-04 04:30:58,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 04:30:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 21481 states and 31415 transitions. [2021-11-04 04:30:58,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-04 04:30:58,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:30:58,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:58,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 04:30:58,604 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:30:58,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:30:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash -137064575, now seen corresponding path program 1 times [2021-11-04 04:30:58,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:30:58,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694798395] [2021-11-04 04:30:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:30:58,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:30:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:30:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 04:30:58,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:30:58,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694798395] [2021-11-04 04:30:58,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694798395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:30:58,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664942366] [2021-11-04 04:30:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:30:58,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:30:58,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:30:58,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:30:58,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 04:31:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:31:00,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 5505 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 04:31:00,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:31:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 04:31:01,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:31:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 04:31:01,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664942366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:31:01,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:31:01,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 04:31:01,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025074013] [2021-11-04 04:31:01,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:31:01,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 04:31:01,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:31:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 04:31:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:31:01,739 INFO L87 Difference]: Start difference. First operand 21481 states and 31415 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 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 04:31:03,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:31:19,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:31:35,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:33:04,593 WARN L515 Checker$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 04:33:15,863 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 [] Killed by 15