./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.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 0f1a59e3fe28583d669f3a9c734ebc5395c61cae2e7711aea93760782e80de65 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:41:04,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:41:04,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:41:04,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:41:04,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:41:04,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:41:04,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:41:04,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:41:04,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:41:04,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:41:04,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:41:04,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:41:04,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:41:04,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:41:04,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:41:04,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:41:04,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:41:04,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:41:04,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:41:04,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:41:04,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:41:04,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:41:04,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:41:04,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:41:04,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:41:04,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:41:04,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:41:04,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:41:04,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:41:04,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:41:04,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:41:04,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:41:04,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:41:04,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:41:04,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:41:04,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:41:04,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:41:04,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:41:04,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:41:04,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:41:04,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:41:04,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:41:04,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:41:04,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:41:04,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:41:04,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:41:04,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:41:04,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:41:04,701 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:41:04,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:41:04,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:41:04,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:41:04,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:41:04,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:41:04,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:41:04,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:41:04,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:41:04,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:41:04,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:41:04,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:41:04,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:41:04,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:41:04,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:41:04,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:41:04,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:41:04,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:41:04,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:41:04,703 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:41:04,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:41:04,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:41:04,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:41:04,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1a59e3fe28583d669f3a9c734ebc5395c61cae2e7711aea93760782e80de65 [2021-11-07 16:41:04,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:41:04,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:41:04,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:41:04,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:41:04,890 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:41:04,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2021-11-07 16:41:04,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882919359/92f3a9a8fb8046fcb2b63d9322026ea1/FLAGbb0b308f4 [2021-11-07 16:41:05,612 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:41:05,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2021-11-07 16:41:05,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882919359/92f3a9a8fb8046fcb2b63d9322026ea1/FLAGbb0b308f4 [2021-11-07 16:41:05,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882919359/92f3a9a8fb8046fcb2b63d9322026ea1 [2021-11-07 16:41:05,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:41:05,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:41:05,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:41:05,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:41:05,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:41:05,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:41:05" (1/1) ... [2021-11-07 16:41:05,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6236c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:05, skipping insertion in model container [2021-11-07 16:41:05,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:41:05" (1/1) ... [2021-11-07 16:41:05,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:41:06,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:41:07,755 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410722,410735] [2021-11-07 16:41:07,757 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410867,410880] [2021-11-07 16:41:07,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:41:07,832 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:41:08,086 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410722,410735] [2021-11-07 16:41:08,086 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410867,410880] [2021-11-07 16:41:08,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:41:08,329 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:41:08,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08 WrapperNode [2021-11-07 16:41:08,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:41:08,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:41:08,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:41:08,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:41:08,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:08,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:09,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:41:09,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:41:09,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:41:09,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:41:09,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:09,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:10,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:10,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:10,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:11,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:11,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:11,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:41:11,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:41:11,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:41:11,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:41:11,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (1/1) ... [2021-11-07 16:41:11,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:41:11,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:41:11,432 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) [2021-11-07 16:41:11,470 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 [2021-11-07 16:41:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:41:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:41:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:41:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:41:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:41:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:41:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:41:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:41:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:41:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:41:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:41:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:41:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:41:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:41:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:43:37,515 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#6: ldv_switch_1_#res := 0; [2021-11-07 16:43:37,515 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#7: ldv_switch_1_#res := 0; [2021-11-07 16:43:37,515 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-07 16:43:37,515 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#5: ldv_switch_1_#res := 0; [2021-11-07 16:43:37,518 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 16:43:37,518 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 16:43:37,519 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:43:37,520 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 16:43:37,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-07 16:43:37,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 16:43:37,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#8: ldv_switch_1_#res := 0; [2021-11-07 16:43:37,532 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 16:43:37,533 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:43:37,535 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:43:37,588 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:43:37,588 INFO L299 CfgBuilder]: Removed 10743 assume(true) statements. [2021-11-07 16:43:37,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:43:37 BoogieIcfgContainer [2021-11-07 16:43:37,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:43:37,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:43:37,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:43:37,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:43:37,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:41:05" (1/3) ... [2021-11-07 16:43:37,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a1d90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:43:37, skipping insertion in model container [2021-11-07 16:43:37,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:41:08" (2/3) ... [2021-11-07 16:43:37,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a1d90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:43:37, skipping insertion in model container [2021-11-07 16:43:37,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:43:37" (3/3) ... [2021-11-07 16:43:37,600 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2021-11-07 16:43:37,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:43:37,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-07 16:43:37,651 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:43:37,655 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 [2021-11-07 16:43:37,655 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-07 16:43:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 10276 states, 10256 states have (on average 1.3043096723868954) internal successors, (13377), 10275 states have internal predecessors, (13377), 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) [2021-11-07 16:43:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 16:43:37,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:37,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:43:37,763 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:43:37,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1813481632, now seen corresponding path program 1 times [2021-11-07 16:43:37,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:37,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835018663] [2021-11-07 16:43:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:37,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:43:39,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:39,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835018663] [2021-11-07 16:43:39,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835018663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:39,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:39,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:43:39,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093348629] [2021-11-07 16:43:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:39,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:39,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:39,234 INFO L87 Difference]: Start difference. First operand has 10276 states, 10256 states have (on average 1.3043096723868954) internal successors, (13377), 10275 states have internal predecessors, (13377), 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 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-07 16:43:41,385 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 [] [2021-11-07 16:43:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:43:42,292 INFO L93 Difference]: Finished difference Result 28517 states and 37127 transitions. [2021-11-07 16:43:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:43:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-07 16:43:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:43:42,374 INFO L225 Difference]: With dead ends: 28517 [2021-11-07 16:43:42,374 INFO L226 Difference]: Without dead ends: 18162 [2021-11-07 16:43:42,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:42,411 INFO L933 BasicCegarLoop]: 13300 mSDtfsCounter, 10861 mSDsluCounter, 13254 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2511.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10861 SdHoareTripleChecker+Valid, 26554 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.85ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2647.21ms IncrementalHoareTripleChecker+Time [2021-11-07 16:43:42,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10861 Valid, 26554 Invalid, 75 Unknown, 0 Unchecked, 36.85ms Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2647.21ms Time] [2021-11-07 16:43:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18162 states. [2021-11-07 16:43:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18162 to 18124. [2021-11-07 16:43:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18124 states, 18104 states have (on average 1.2887207247017234) internal successors, (23331), 18123 states have internal predecessors, (23331), 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) [2021-11-07 16:43:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18124 states to 18124 states and 23331 transitions. [2021-11-07 16:43:43,182 INFO L78 Accepts]: Start accepts. Automaton has 18124 states and 23331 transitions. Word has length 140 [2021-11-07 16:43:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:43:43,186 INFO L470 AbstractCegarLoop]: Abstraction has 18124 states and 23331 transitions. [2021-11-07 16:43:43,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-07 16:43:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 18124 states and 23331 transitions. [2021-11-07 16:43:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 16:43:43,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:43,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:43:43,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:43:43,195 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:43:43,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1060683067, now seen corresponding path program 1 times [2021-11-07 16:43:43,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:43,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738003769] [2021-11-07 16:43:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:43,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:43:43,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:43,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738003769] [2021-11-07 16:43:43,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738003769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:43,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:43,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:43:43,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337835446] [2021-11-07 16:43:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:43,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:43,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:43,697 INFO L87 Difference]: Start difference. First operand 18124 states and 23331 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-07 16:43:45,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:43:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:43:47,017 INFO L93 Difference]: Finished difference Result 52936 states and 68169 transitions. [2021-11-07 16:43:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:43:47,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 143 [2021-11-07 16:43:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:43:47,120 INFO L225 Difference]: With dead ends: 52936 [2021-11-07 16:43:47,121 INFO L226 Difference]: Without dead ends: 35120 [2021-11-07 16:43:47,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:47,162 INFO L933 BasicCegarLoop]: 12784 mSDtfsCounter, 11864 mSDsluCounter, 12707 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2643.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11864 SdHoareTripleChecker+Valid, 25491 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.85ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2775.01ms IncrementalHoareTripleChecker+Time [2021-11-07 16:43:47,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11864 Valid, 25491 Invalid, 93 Unknown, 0 Unchecked, 27.85ms Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 2775.01ms Time] [2021-11-07 16:43:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35120 states. [2021-11-07 16:43:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35120 to 35072. [2021-11-07 16:43:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35072 states, 35052 states have (on average 1.2879150975693257) internal successors, (45144), 35071 states have internal predecessors, (45144), 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) [2021-11-07 16:43:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35072 states to 35072 states and 45144 transitions. [2021-11-07 16:43:47,882 INFO L78 Accepts]: Start accepts. Automaton has 35072 states and 45144 transitions. Word has length 143 [2021-11-07 16:43:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:43:47,883 INFO L470 AbstractCegarLoop]: Abstraction has 35072 states and 45144 transitions. [2021-11-07 16:43:47,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-07 16:43:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 35072 states and 45144 transitions. [2021-11-07 16:43:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 16:43:47,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:47,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:43:47,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:43:47,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:43:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1869724388, now seen corresponding path program 1 times [2021-11-07 16:43:47,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:47,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976451902] [2021-11-07 16:43:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:47,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:43:48,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:48,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976451902] [2021-11-07 16:43:48,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976451902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:48,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:48,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:43:48,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444663148] [2021-11-07 16:43:48,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:48,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:48,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:48,315 INFO L87 Difference]: Start difference. First operand 35072 states and 45144 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-11-07 16:43:50,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:43:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:43:52,295 INFO L93 Difference]: Finished difference Result 103088 states and 132642 transitions. [2021-11-07 16:43:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:43:52,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 144 [2021-11-07 16:43:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:43:52,471 INFO L225 Difference]: With dead ends: 103088 [2021-11-07 16:43:52,471 INFO L226 Difference]: Without dead ends: 68324 [2021-11-07 16:43:52,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:52,540 INFO L933 BasicCegarLoop]: 13352 mSDtfsCounter, 11902 mSDsluCounter, 12708 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2816.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11902 SdHoareTripleChecker+Valid, 26060 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.21ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2976.29ms IncrementalHoareTripleChecker+Time [2021-11-07 16:43:52,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11902 Valid, 26060 Invalid, 93 Unknown, 0 Unchecked, 22.21ms Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 2976.29ms Time] [2021-11-07 16:43:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68324 states. [2021-11-07 16:43:53,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68324 to 68272. [2021-11-07 16:43:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68272 states, 68252 states have (on average 1.2862626736212859) internal successors, (87790), 68271 states have internal predecessors, (87790), 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) [2021-11-07 16:43:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68272 states to 68272 states and 87790 transitions. [2021-11-07 16:43:53,975 INFO L78 Accepts]: Start accepts. Automaton has 68272 states and 87790 transitions. Word has length 144 [2021-11-07 16:43:53,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:43:53,976 INFO L470 AbstractCegarLoop]: Abstraction has 68272 states and 87790 transitions. [2021-11-07 16:43:53,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-11-07 16:43:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 68272 states and 87790 transitions. [2021-11-07 16:43:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 16:43:53,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:43:53,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:43:53,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:43:53,988 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:43:53,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:43:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash 752824777, now seen corresponding path program 1 times [2021-11-07 16:43:53,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:43:53,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193827908] [2021-11-07 16:43:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:43:53,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:43:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:43:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:43:54,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:43:54,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193827908] [2021-11-07 16:43:54,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193827908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:43:54,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:43:54,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:43:54,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721749888] [2021-11-07 16:43:54,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:43:54,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:43:54,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:43:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:43:54,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:54,545 INFO L87 Difference]: Start difference. First operand 68272 states and 87790 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-07 16:43:56,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:43:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:43:58,728 INFO L93 Difference]: Finished difference Result 189316 states and 243232 transitions. [2021-11-07 16:43:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:43:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2021-11-07 16:43:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:43:59,118 INFO L225 Difference]: With dead ends: 189316 [2021-11-07 16:43:59,118 INFO L226 Difference]: Without dead ends: 121352 [2021-11-07 16:43:59,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:43:59,263 INFO L933 BasicCegarLoop]: 14654 mSDtfsCounter, 9979 mSDsluCounter, 12735 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2497.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9979 SdHoareTripleChecker+Valid, 27389 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.18ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2631.69ms IncrementalHoareTripleChecker+Time [2021-11-07 16:43:59,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9979 Valid, 27389 Invalid, 75 Unknown, 0 Unchecked, 19.18ms Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2631.69ms Time] [2021-11-07 16:43:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121352 states. [2021-11-07 16:44:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121352 to 121284. [2021-11-07 16:44:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121284 states, 121264 states have (on average 1.2835961208602717) internal successors, (155654), 121283 states have internal predecessors, (155654), 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) [2021-11-07 16:44:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121284 states to 121284 states and 155654 transitions. [2021-11-07 16:44:02,037 INFO L78 Accepts]: Start accepts. Automaton has 121284 states and 155654 transitions. Word has length 148 [2021-11-07 16:44:02,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:02,038 INFO L470 AbstractCegarLoop]: Abstraction has 121284 states and 155654 transitions. [2021-11-07 16:44:02,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-07 16:44:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 121284 states and 155654 transitions. [2021-11-07 16:44:02,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-07 16:44:02,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:02,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:44:02,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:44:02,046 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:44:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash -990539591, now seen corresponding path program 1 times [2021-11-07 16:44:02,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:02,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328491034] [2021-11-07 16:44:02,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:02,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:44:02,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:02,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328491034] [2021-11-07 16:44:02,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328491034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:02,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:02,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:02,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015777111] [2021-11-07 16:44:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:02,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:44:02,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:44:02,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:02,771 INFO L87 Difference]: Start difference. First operand 121284 states and 155654 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-07 16:44:04,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:44:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:44:08,884 INFO L93 Difference]: Finished difference Result 333398 states and 428515 transitions. [2021-11-07 16:44:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:44:08,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-07 16:44:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:44:09,451 INFO L225 Difference]: With dead ends: 333398 [2021-11-07 16:44:09,451 INFO L226 Difference]: Without dead ends: 212422 [2021-11-07 16:44:09,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:09,605 INFO L933 BasicCegarLoop]: 17098 mSDtfsCounter, 10052 mSDsluCounter, 12734 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2544.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10052 SdHoareTripleChecker+Valid, 29832 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.24ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2692.21ms IncrementalHoareTripleChecker+Time [2021-11-07 16:44:09,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10052 Valid, 29832 Invalid, 75 Unknown, 0 Unchecked, 22.24ms Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2692.21ms Time] [2021-11-07 16:44:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212422 states. [2021-11-07 16:44:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212422 to 212356. [2021-11-07 16:44:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212356 states, 212336 states have (on average 1.285688719764901) internal successors, (272998), 212355 states have internal predecessors, (272998), 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) [2021-11-07 16:44:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212356 states to 212356 states and 272998 transitions. [2021-11-07 16:44:15,068 INFO L78 Accepts]: Start accepts. Automaton has 212356 states and 272998 transitions. Word has length 154 [2021-11-07 16:44:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:44:15,069 INFO L470 AbstractCegarLoop]: Abstraction has 212356 states and 272998 transitions. [2021-11-07 16:44:15,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2021-11-07 16:44:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 212356 states and 272998 transitions. [2021-11-07 16:44:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 16:44:15,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:44:15,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:44:15,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:44:15,076 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-07 16:44:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:44:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 291356204, now seen corresponding path program 1 times [2021-11-07 16:44:15,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:44:15,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021749808] [2021-11-07 16:44:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:44:15,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:44:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:44:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:44:15,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:44:15,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021749808] [2021-11-07 16:44:15,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021749808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:44:15,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:44:15,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:44:15,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427425337] [2021-11-07 16:44:15,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:44:15,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:44:15,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:44:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:44:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:44:15,412 INFO L87 Difference]: Start difference. First operand 212356 states and 272998 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-07 16:44:17,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []