./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 18:36:04,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 18:36:04,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 18:36:04,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 18:36:04,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 18:36:04,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 18:36:04,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 18:36:04,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 18:36:04,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 18:36:04,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 18:36:04,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 18:36:04,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 18:36:04,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 18:36:04,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 18:36:04,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 18:36:04,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 18:36:04,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 18:36:04,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 18:36:04,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 18:36:04,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 18:36:04,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 18:36:04,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 18:36:04,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 18:36:04,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 18:36:04,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 18:36:04,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 18:36:04,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 18:36:04,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 18:36:04,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 18:36:04,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 18:36:04,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 18:36:04,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 18:36:04,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 18:36:04,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 18:36:04,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 18:36:04,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 18:36:04,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 18:36:04,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 18:36:04,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 18:36:04,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 18:36:04,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 18:36:04,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 18:36:04,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 18:36:04,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 18:36:04,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 18:36:04,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 18:36:04,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 18:36:04,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 18:36:04,749 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 18:36:04,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 18:36:04,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 18:36:04,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 18:36:04,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 18:36:04,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 18:36:04,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 18:36:04,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 18:36:04,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 18:36:04,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 18:36:04,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 18:36:04,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 18:36:04,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 18:36:04,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 18:36:04,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 18:36:04,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 18:36:04,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 18:36:04,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 18:36:04,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 18:36:04,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 18:36:04,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 18:36:04,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 18:36:04,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 18:36:04,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2021-11-07 18:36:05,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 18:36:05,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 18:36:05,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 18:36:05,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 18:36:05,035 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 18:36:05,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-07 18:36:05,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f50db6d92/3ab4eec6c4a241daba4d62ce4106755b/FLAGf17834b77 [2021-11-07 18:36:05,784 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 18:36:05,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-07 18:36:05,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f50db6d92/3ab4eec6c4a241daba4d62ce4106755b/FLAGf17834b77 [2021-11-07 18:36:05,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f50db6d92/3ab4eec6c4a241daba4d62ce4106755b [2021-11-07 18:36:05,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 18:36:05,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 18:36:05,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 18:36:05,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 18:36:05,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 18:36:05,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:36:05" (1/1) ... [2021-11-07 18:36:05,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32aa8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:05, skipping insertion in model container [2021-11-07 18:36:05,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:36:05" (1/1) ... [2021-11-07 18:36:05,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 18:36:06,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 18:36:07,801 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-07 18:36:07,805 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-07 18:36:07,805 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-07 18:36:07,806 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-07 18:36:07,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 18:36:07,877 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 18:36:08,274 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2021-11-07 18:36:08,275 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2021-11-07 18:36:08,275 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2021-11-07 18:36:08,275 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-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2021-11-07 18:36:08,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 18:36:08,424 INFO L208 MainTranslator]: Completed translation [2021-11-07 18:36:08,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08 WrapperNode [2021-11-07 18:36:08,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 18:36:08,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 18:36:08,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 18:36:08,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 18:36:08,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:08,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:09,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 18:36:09,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 18:36:09,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 18:36:09,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 18:36:09,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:09,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:09,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:09,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:10,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:10,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:10,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:10,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 18:36:10,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 18:36:10,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 18:36:10,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 18:36:10,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (1/1) ... [2021-11-07 18:36:10,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 18:36:10,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 18:36:10,529 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 18:36:10,535 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 18:36:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 18:36:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 18:36:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 18:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 18:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 18:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 18:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 18:36:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 18:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 18:36:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 18:36:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 18:36:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 18:36:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 18:36:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 18:36:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 18:36:23,642 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 18:36:23,643 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 18:36:23,643 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 18:36:23,643 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 18:36:23,644 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 18:36:23,645 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 18:36:23,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 18:36:23,684 INFO L299 CfgBuilder]: Removed 10552 assume(true) statements. [2021-11-07 18:36:23,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:36:23 BoogieIcfgContainer [2021-11-07 18:36:23,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 18:36:23,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 18:36:23,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 18:36:23,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 18:36:23,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:36:05" (1/3) ... [2021-11-07 18:36:23,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a2d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:36:23, skipping insertion in model container [2021-11-07 18:36:23,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:08" (2/3) ... [2021-11-07 18:36:23,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a2d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:36:23, skipping insertion in model container [2021-11-07 18:36:23,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:36:23" (3/3) ... [2021-11-07 18:36:23,699 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2021-11-07 18:36:23,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 18:36:23,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-11-07 18:36:23,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 18:36:23,768 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 18:36:23,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-11-07 18:36:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 6856 states, 6791 states have (on average 1.2098365483728464) internal successors, (8216), 6855 states have internal predecessors, (8216), 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 18:36:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 18:36:23,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:36:23,987 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] [2021-11-07 18:36:23,987 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-07 18:36:23,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:36:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1312456937, now seen corresponding path program 1 times [2021-11-07 18:36:24,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:36:24,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029508648] [2021-11-07 18:36:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:36:24,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:36:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:36:24,467 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 18:36:24,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:36:24,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029508648] [2021-11-07 18:36:24,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029508648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:36:24,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:36:24,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:36:24,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778528500] [2021-11-07 18:36:24,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:36:24,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:36:24,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:36:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:36:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:24,522 INFO L87 Difference]: Start difference. First operand has 6856 states, 6791 states have (on average 1.2098365483728464) internal successors, (8216), 6855 states have internal predecessors, (8216), 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 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:36:26,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:36:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:36:27,264 INFO L93 Difference]: Finished difference Result 19983 states and 23887 transitions. [2021-11-07 18:36:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:36:27,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-07 18:36:27,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:36:27,343 INFO L225 Difference]: With dead ends: 19983 [2021-11-07 18:36:27,344 INFO L226 Difference]: Without dead ends: 12939 [2021-11-07 18:36:27,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:27,374 INFO L933 BasicCegarLoop]: 8112 mSDtfsCounter, 7632 mSDsluCounter, 7946 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2097.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7632 SdHoareTripleChecker+Valid, 16058 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.79ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2212.08ms IncrementalHoareTripleChecker+Time [2021-11-07 18:36:27,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7632 Valid, 16058 Invalid, 44 Unknown, 0 Unchecked, 48.79ms Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2212.08ms Time] [2021-11-07 18:36:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12939 states. [2021-11-07 18:36:27,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12939 to 12413. [2021-11-07 18:36:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12413 states, 12348 states have (on average 1.1755749919015226) internal successors, (14516), 12412 states have internal predecessors, (14516), 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 18:36:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12413 states to 12413 states and 14516 transitions. [2021-11-07 18:36:27,835 INFO L78 Accepts]: Start accepts. Automaton has 12413 states and 14516 transitions. Word has length 43 [2021-11-07 18:36:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:36:27,836 INFO L470 AbstractCegarLoop]: Abstraction has 12413 states and 14516 transitions. [2021-11-07 18:36:27,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:36:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 12413 states and 14516 transitions. [2021-11-07 18:36:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 18:36:27,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:36:27,844 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] [2021-11-07 18:36:27,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 18:36:27,845 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-07 18:36:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:36:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash 452358301, now seen corresponding path program 1 times [2021-11-07 18:36:27,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:36:27,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008868949] [2021-11-07 18:36:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:36:27,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:36:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:36:28,034 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 18:36:28,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:36:28,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008868949] [2021-11-07 18:36:28,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008868949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:36:28,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:36:28,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:36:28,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004157050] [2021-11-07 18:36:28,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:36:28,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:36:28,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:36:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:36:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:28,044 INFO L87 Difference]: Start difference. First operand 12413 states and 14516 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 18:36:30,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:36:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:36:30,817 INFO L93 Difference]: Finished difference Result 34172 states and 40034 transitions. [2021-11-07 18:36:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:36:30,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-07 18:36:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:36:30,896 INFO L225 Difference]: With dead ends: 34172 [2021-11-07 18:36:30,896 INFO L226 Difference]: Without dead ends: 21835 [2021-11-07 18:36:30,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:30,929 INFO L933 BasicCegarLoop]: 7799 mSDtfsCounter, 6245 mSDsluCounter, 7374 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2062.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6245 SdHoareTripleChecker+Valid, 15173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.63ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2179.76ms IncrementalHoareTripleChecker+Time [2021-11-07 18:36:30,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6245 Valid, 15173 Invalid, 28 Unknown, 0 Unchecked, 20.63ms Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2179.76ms Time] [2021-11-07 18:36:30,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21835 states. [2021-11-07 18:36:31,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21835 to 21555. [2021-11-07 18:36:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21555 states, 21490 states have (on average 1.1789204281060959) internal successors, (25335), 21554 states have internal predecessors, (25335), 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 18:36:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21555 states to 21555 states and 25335 transitions. [2021-11-07 18:36:31,683 INFO L78 Accepts]: Start accepts. Automaton has 21555 states and 25335 transitions. Word has length 45 [2021-11-07 18:36:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:36:31,688 INFO L470 AbstractCegarLoop]: Abstraction has 21555 states and 25335 transitions. [2021-11-07 18:36:31,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 18:36:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 21555 states and 25335 transitions. [2021-11-07 18:36:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 18:36:31,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:36:31,691 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] [2021-11-07 18:36:31,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 18:36:31,692 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-07 18:36:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:36:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1773104503, now seen corresponding path program 1 times [2021-11-07 18:36:31,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:36:31,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991060288] [2021-11-07 18:36:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:36:31,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:36:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:36:31,846 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 18:36:31,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:36:31,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991060288] [2021-11-07 18:36:31,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991060288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:36:31,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:36:31,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:36:31,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328672920] [2021-11-07 18:36:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:36:31,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:36:31,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:36:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:36:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:31,849 INFO L87 Difference]: Start difference. First operand 21555 states and 25335 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 18:36:33,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:36:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:36:34,825 INFO L93 Difference]: Finished difference Result 64155 states and 75438 transitions. [2021-11-07 18:36:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:36:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-07 18:36:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:36:34,947 INFO L225 Difference]: With dead ends: 64155 [2021-11-07 18:36:34,947 INFO L226 Difference]: Without dead ends: 42676 [2021-11-07 18:36:35,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:35,015 INFO L933 BasicCegarLoop]: 7800 mSDtfsCounter, 7519 mSDsluCounter, 7746 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2054.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7519 SdHoareTripleChecker+Valid, 15546 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.39ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2162.33ms IncrementalHoareTripleChecker+Time [2021-11-07 18:36:35,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7519 Valid, 15546 Invalid, 34 Unknown, 0 Unchecked, 21.39ms Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2162.33ms Time] [2021-11-07 18:36:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42676 states. [2021-11-07 18:36:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42676 to 42624. [2021-11-07 18:36:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42624 states, 42559 states have (on average 1.178082191780822) internal successors, (50138), 42623 states have internal predecessors, (50138), 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 18:36:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42624 states to 42624 states and 50138 transitions. [2021-11-07 18:36:36,327 INFO L78 Accepts]: Start accepts. Automaton has 42624 states and 50138 transitions. Word has length 46 [2021-11-07 18:36:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:36:36,328 INFO L470 AbstractCegarLoop]: Abstraction has 42624 states and 50138 transitions. [2021-11-07 18:36:36,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 18:36:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 42624 states and 50138 transitions. [2021-11-07 18:36:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 18:36:36,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:36:36,330 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] [2021-11-07 18:36:36,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 18:36:36,330 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-07 18:36:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:36:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1413293794, now seen corresponding path program 1 times [2021-11-07 18:36:36,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:36:36,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771517082] [2021-11-07 18:36:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:36:36,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:36:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:36:36,487 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 18:36:36,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:36:36,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771517082] [2021-11-07 18:36:36,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771517082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:36:36,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:36:36,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:36:36,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89433303] [2021-11-07 18:36:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:36:36,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:36:36,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:36:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:36:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:36,492 INFO L87 Difference]: Start difference. First operand 42624 states and 50138 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 18:36:38,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:36:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:36:39,392 INFO L93 Difference]: Finished difference Result 71681 states and 84729 transitions. [2021-11-07 18:36:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:36:39,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-07 18:36:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:36:39,496 INFO L225 Difference]: With dead ends: 71681 [2021-11-07 18:36:39,497 INFO L226 Difference]: Without dead ends: 29133 [2021-11-07 18:36:39,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:39,586 INFO L933 BasicCegarLoop]: 8115 mSDtfsCounter, 2675 mSDsluCounter, 7644 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2109.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 15759 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.93ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2220.41ms IncrementalHoareTripleChecker+Time [2021-11-07 18:36:39,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2675 Valid, 15759 Invalid, 100 Unknown, 0 Unchecked, 14.93ms Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2220.41ms Time] [2021-11-07 18:36:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29133 states. [2021-11-07 18:36:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29133 to 29011. [2021-11-07 18:36:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29011 states, 28946 states have (on average 1.1910108477855317) internal successors, (34475), 29010 states have internal predecessors, (34475), 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 18:36:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29011 states to 29011 states and 34475 transitions. [2021-11-07 18:36:40,418 INFO L78 Accepts]: Start accepts. Automaton has 29011 states and 34475 transitions. Word has length 49 [2021-11-07 18:36:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:36:40,418 INFO L470 AbstractCegarLoop]: Abstraction has 29011 states and 34475 transitions. [2021-11-07 18:36:40,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 18:36:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 29011 states and 34475 transitions. [2021-11-07 18:36:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 18:36:40,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:36:40,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:36:40,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 18:36:40,421 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-07 18:36:40,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:36:40,422 INFO L85 PathProgramCache]: Analyzing trace with hash 354775553, now seen corresponding path program 1 times [2021-11-07 18:36:40,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:36:40,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892372149] [2021-11-07 18:36:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:36:40,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:36:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:36:40,562 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 18:36:40,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:36:40,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892372149] [2021-11-07 18:36:40,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892372149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:36:40,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:36:40,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:36:40,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816227332] [2021-11-07 18:36:40,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:36:40,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:36:40,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:36:40,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:36:40,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:40,564 INFO L87 Difference]: Start difference. First operand 29011 states and 34475 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:36:42,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:36:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:36:43,405 INFO L93 Difference]: Finished difference Result 80074 states and 94609 transitions. [2021-11-07 18:36:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:36:43,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 18:36:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:36:43,527 INFO L225 Difference]: With dead ends: 80074 [2021-11-07 18:36:43,527 INFO L226 Difference]: Without dead ends: 51139 [2021-11-07 18:36:43,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:43,585 INFO L933 BasicCegarLoop]: 7798 mSDtfsCounter, 7117 mSDsluCounter, 7647 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1832.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7117 SdHoareTripleChecker+Valid, 15445 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.02ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1949.86ms IncrementalHoareTripleChecker+Time [2021-11-07 18:36:43,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7117 Valid, 15445 Invalid, 65 Unknown, 0 Unchecked, 12.02ms Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 1949.86ms Time] [2021-11-07 18:36:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51139 states. [2021-11-07 18:36:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51139 to 50690. [2021-11-07 18:36:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50690 states, 50625 states have (on average 1.1794172839506172) internal successors, (59708), 50689 states have internal predecessors, (59708), 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 18:36:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50690 states to 50690 states and 59708 transitions. [2021-11-07 18:36:45,067 INFO L78 Accepts]: Start accepts. Automaton has 50690 states and 59708 transitions. Word has length 52 [2021-11-07 18:36:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:36:45,068 INFO L470 AbstractCegarLoop]: Abstraction has 50690 states and 59708 transitions. [2021-11-07 18:36:45,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 18:36:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 50690 states and 59708 transitions. [2021-11-07 18:36:45,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 18:36:45,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:36:45,069 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-11-07 18:36:45,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 18:36:45,070 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-07 18:36:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:36:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1310411076, now seen corresponding path program 1 times [2021-11-07 18:36:45,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:36:45,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708356610] [2021-11-07 18:36:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:36:45,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:36:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:36:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:36:45,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:36:45,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708356610] [2021-11-07 18:36:45,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708356610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:36:45,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:36:45,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:36:45,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699613378] [2021-11-07 18:36:45,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:36:45,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:36:45,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:36:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:36:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:45,193 INFO L87 Difference]: Start difference. First operand 50690 states and 59708 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 18:36:47,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:36:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:36:48,887 INFO L93 Difference]: Finished difference Result 149133 states and 175755 transitions. [2021-11-07 18:36:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:36:48,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-07 18:36:48,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:36:49,150 INFO L225 Difference]: With dead ends: 149133 [2021-11-07 18:36:49,150 INFO L226 Difference]: Without dead ends: 98519 [2021-11-07 18:36:49,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:49,234 INFO L933 BasicCegarLoop]: 9268 mSDtfsCounter, 7702 mSDsluCounter, 7793 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1968.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7702 SdHoareTripleChecker+Valid, 17061 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.73ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2071.62ms IncrementalHoareTripleChecker+Time [2021-11-07 18:36:49,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7702 Valid, 17061 Invalid, 21 Unknown, 0 Unchecked, 11.73ms Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 2071.62ms Time] [2021-11-07 18:36:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98519 states. [2021-11-07 18:36:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98519 to 98197. [2021-11-07 18:36:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98197 states, 98132 states have (on average 1.179900542126931) internal successors, (115786), 98196 states have internal predecessors, (115786), 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 18:36:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98197 states to 98197 states and 115786 transitions. [2021-11-07 18:36:51,375 INFO L78 Accepts]: Start accepts. Automaton has 98197 states and 115786 transitions. Word has length 60 [2021-11-07 18:36:51,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:36:51,376 INFO L470 AbstractCegarLoop]: Abstraction has 98197 states and 115786 transitions. [2021-11-07 18:36:51,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 18:36:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 98197 states and 115786 transitions. [2021-11-07 18:36:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 18:36:51,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:36:51,377 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-07 18:36:51,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 18:36:51,378 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-07 18:36:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:36:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash -83004131, now seen corresponding path program 1 times [2021-11-07 18:36:51,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:36:51,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858457142] [2021-11-07 18:36:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:36:51,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:36:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:36:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:36:51,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:36:51,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858457142] [2021-11-07 18:36:51,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858457142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:36:51,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:36:51,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 18:36:51,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317717886] [2021-11-07 18:36:51,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:36:51,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:36:51,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:36:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:36:51,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:51,750 INFO L87 Difference]: Start difference. First operand 98197 states and 115786 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 18:36:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:36:55,263 INFO L93 Difference]: Finished difference Result 294337 states and 347072 transitions. [2021-11-07 18:36:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:36:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-07 18:36:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:36:55,691 INFO L225 Difference]: With dead ends: 294337 [2021-11-07 18:36:55,691 INFO L226 Difference]: Without dead ends: 196267 [2021-11-07 18:36:55,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:36:55,866 INFO L933 BasicCegarLoop]: 13152 mSDtfsCounter, 7653 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7653 SdHoareTripleChecker+Valid, 20748 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.52ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.20ms IncrementalHoareTripleChecker+Time [2021-11-07 18:36:55,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7653 Valid, 20748 Invalid, 252 Unknown, 0 Unchecked, 14.52ms Time], IncrementalHoareTripleChecker [125 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 203.20ms Time] [2021-11-07 18:36:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196267 states. [2021-11-07 18:37:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196267 to 196049. [2021-11-07 18:37:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196049 states, 195984 states have (on average 1.1750244917952486) internal successors, (230286), 196048 states have internal predecessors, (230286), 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 18:37:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196049 states to 196049 states and 230286 transitions. [2021-11-07 18:37:00,700 INFO L78 Accepts]: Start accepts. Automaton has 196049 states and 230286 transitions. Word has length 81 [2021-11-07 18:37:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:37:00,701 INFO L470 AbstractCegarLoop]: Abstraction has 196049 states and 230286 transitions. [2021-11-07 18:37:00,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 18:37:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 196049 states and 230286 transitions. [2021-11-07 18:37:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 18:37:00,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:37:00,703 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-07 18:37:00,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 18:37:00,703 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 62 more)] === [2021-11-07 18:37:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:37:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash -477370917, now seen corresponding path program 1 times [2021-11-07 18:37:00,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:37:00,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005631873] [2021-11-07 18:37:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:37:00,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:37:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:37:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:37:00,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:37:00,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005631873] [2021-11-07 18:37:00,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005631873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:37:00,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:37:00,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 18:37:00,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49500582] [2021-11-07 18:37:00,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:37:00,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:37:00,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:37:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:37:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:37:00,820 INFO L87 Difference]: Start difference. First operand 196049 states and 230286 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 18:37:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:37:04,322 INFO L93 Difference]: Finished difference Result 294119 states and 344975 transitions. [2021-11-07 18:37:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:37:04,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-07 18:37:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:37:04,526 INFO L225 Difference]: With dead ends: 294119 [2021-11-07 18:37:04,526 INFO L226 Difference]: Without dead ends: 98197 [2021-11-07 18:37:04,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:37:04,752 INFO L933 BasicCegarLoop]: 7743 mSDtfsCounter, 7698 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7698 SdHoareTripleChecker+Valid, 7743 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.16ms IncrementalHoareTripleChecker+Time [2021-11-07 18:37:04,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7698 Valid, 7743 Invalid, 1 Unknown, 0 Unchecked, 9.24ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.16ms Time] [2021-11-07 18:37:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98197 states.