./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-ethernet-3com-typhoon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.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 a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:52:14,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:52:14,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:52:14,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:52:14,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:52:14,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:52:14,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:52:14,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:52:14,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:52:14,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:52:14,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:52:14,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:52:14,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:52:14,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:52:14,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:52:14,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:52:14,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:52:14,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:52:14,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:52:14,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:52:14,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:52:14,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:52:14,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:52:14,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:52:14,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:52:14,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:52:14,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:52:14,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:52:14,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:52:14,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:52:14,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:52:14,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:52:14,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:52:14,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:52:14,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:52:14,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:52:14,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:52:14,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:52:14,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:52:14,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:52:14,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:52:14,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:52:14,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:52:14,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:52:14,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:52:14,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:52:14,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:52:14,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:52:14,694 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:52:14,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:52:14,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:52:14,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:52:14,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:52:14,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:52:14,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:52:14,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:52:14,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:52:14,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:52:14,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:52:14,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:52:14,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:52:14,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:52:14,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:52:14,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:52:14,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:52:14,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:52:14,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:52:14,697 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:52:14,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:52:14,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:52:14,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:52:14,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d [2021-11-05 19:52:14,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:52:15,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:52:15,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:52:15,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:52:15,014 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:52:15,015 INFO L432 ainManager$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-ethernet-3com-typhoon.cil.i [2021-11-05 19:52:15,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0892c1025/4cfe16a5a3e1458380f0ef3d2f35ce0e/FLAG60ae39e2d [2021-11-05 19:52:15,753 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:52:15,754 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-ethernet-3com-typhoon.cil.i [2021-11-05 19:52:15,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0892c1025/4cfe16a5a3e1458380f0ef3d2f35ce0e/FLAG60ae39e2d [2021-11-05 19:52:15,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0892c1025/4cfe16a5a3e1458380f0ef3d2f35ce0e [2021-11-05 19:52:15,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:52:15,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:52:15,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:52:15,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:52:15,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:52:15,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:52:15" (1/1) ... [2021-11-05 19:52:15,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17343d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:15, skipping insertion in model container [2021-11-05 19:52:15,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:52:15" (1/1) ... [2021-11-05 19:52:15,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:52:15,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:52:18,089 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-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-05 19:52:18,092 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-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-05 19:52:18,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:52:18,171 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:52:18,423 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-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-05 19:52:18,424 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-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-05 19:52:18,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:52:18,557 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:52:18,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18 WrapperNode [2021-11-05 19:52:18,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:52:18,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:52:18,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:52:18,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:52:18,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:18,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:21,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:52:21,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:52:21,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:52:21,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:52:21,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:21,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:22,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:22,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:23,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:23,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:23,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:24,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:52:24,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:52:24,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:52:24,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:52:24,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (1/1) ... [2021-11-05 19:52:24,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:52:24,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:52:24,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 19:52:24,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 19:52:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 19:52:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:52:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:52:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:52:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:52:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:52:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:52:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:52:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:52:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:52:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:52:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:52:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:52:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:52:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:52:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:03:00,526 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 20:03:00,526 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-05 20:03:00,526 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 20:03:00,527 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:03:00,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:03:00,531 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:03:00,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:03:00,576 INFO L299 CfgBuilder]: Removed 17746 assume(true) statements. [2021-11-05 20:03:00,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:03:00 BoogieIcfgContainer [2021-11-05 20:03:00,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:03:00,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:03:00,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:03:00,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:03:00,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:52:15" (1/3) ... [2021-11-05 20:03:00,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624eb0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:03:00, skipping insertion in model container [2021-11-05 20:03:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:52:18" (2/3) ... [2021-11-05 20:03:00,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624eb0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:03:00, skipping insertion in model container [2021-11-05 20:03:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:03:00" (3/3) ... [2021-11-05 20:03:00,593 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-05 20:03:00,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:03:00,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-05 20:03:00,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:03:00,674 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 20:03:00,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-05 20:03:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 15629 states, 15622 states have (on average 1.3722314684419408) internal successors, (21437), 15628 states have internal predecessors, (21437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 20:03:00,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:00,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:00,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:00,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2079197412, now seen corresponding path program 1 times [2021-11-05 20:03:00,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:00,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572624087] [2021-11-05 20:03:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:00,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:03:01,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:01,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572624087] [2021-11-05 20:03:01,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572624087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:01,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:01,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497767868] [2021-11-05 20:03:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:01,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:01,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:01,523 INFO L87 Difference]: Start difference. First operand has 15629 states, 15622 states have (on average 1.3722314684419408) internal successors, (21437), 15628 states have internal predecessors, (21437), 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 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:03,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:04,579 INFO L93 Difference]: Finished difference Result 33576 states and 46071 transitions. [2021-11-05 20:03:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:04,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-05 20:03:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:04,658 INFO L225 Difference]: With dead ends: 33576 [2021-11-05 20:03:04,659 INFO L226 Difference]: Without dead ends: 17353 [2021-11-05 20:03:04,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:04,697 INFO L933 BasicCegarLoop]: 21369 mSDtfsCounter, 3280 mSDsluCounter, 21317 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2239.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 42686 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.63ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2419.80ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:04,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3280 Valid, 42686 Invalid, 94 Unknown, 0 Unchecked, 59.63ms Time], IncrementalHoareTripleChecker [19 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2419.80ms Time] [2021-11-05 20:03:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17353 states. [2021-11-05 20:03:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17353 to 17347. [2021-11-05 20:03:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17347 states, 17340 states have (on average 1.3474625144175316) internal successors, (23365), 17346 states have internal predecessors, (23365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17347 states to 17347 states and 23365 transitions. [2021-11-05 20:03:05,142 INFO L78 Accepts]: Start accepts. Automaton has 17347 states and 23365 transitions. Word has length 73 [2021-11-05 20:03:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:05,143 INFO L470 AbstractCegarLoop]: Abstraction has 17347 states and 23365 transitions. [2021-11-05 20:03:05,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 17347 states and 23365 transitions. [2021-11-05 20:03:05,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 20:03:05,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:05,149 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] [2021-11-05 20:03:05,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:03:05,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash 608842088, now seen corresponding path program 1 times [2021-11-05 20:03:05,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:05,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798409956] [2021-11-05 20:03:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:05,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:03:05,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:05,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798409956] [2021-11-05 20:03:05,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798409956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:05,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:05,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76612064] [2021-11-05 20:03:05,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:05,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:05,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:05,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:05,374 INFO L87 Difference]: Start difference. First operand 17347 states and 23365 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:07,501 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 [] [2021-11-05 20:03:08,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:08,644 INFO L93 Difference]: Finished difference Result 47394 states and 63861 transitions. [2021-11-05 20:03:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:08,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-05 20:03:08,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:08,739 INFO L225 Difference]: With dead ends: 47394 [2021-11-05 20:03:08,740 INFO L226 Difference]: Without dead ends: 30115 [2021-11-05 20:03:08,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:08,781 INFO L933 BasicCegarLoop]: 20266 mSDtfsCounter, 17204 mSDsluCounter, 20087 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2284.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17204 SdHoareTripleChecker+Valid, 40353 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.16ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2462.18ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:08,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17204 Valid, 40353 Invalid, 77 Unknown, 0 Unchecked, 40.16ms Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 1 Unknown, 0 Unchecked, 2462.18ms Time] [2021-11-05 20:03:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30115 states. [2021-11-05 20:03:09,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30115 to 28602. [2021-11-05 20:03:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28602 states, 28595 states have (on average 1.3477531036894561) internal successors, (38539), 28601 states have internal predecessors, (38539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28602 states to 28602 states and 38539 transitions. [2021-11-05 20:03:09,538 INFO L78 Accepts]: Start accepts. Automaton has 28602 states and 38539 transitions. Word has length 84 [2021-11-05 20:03:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:09,539 INFO L470 AbstractCegarLoop]: Abstraction has 28602 states and 38539 transitions. [2021-11-05 20:03:09,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 28602 states and 38539 transitions. [2021-11-05 20:03:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-05 20:03:09,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:09,542 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:09,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:03:09,543 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:09,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash 629054439, now seen corresponding path program 1 times [2021-11-05 20:03:09,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:09,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033239544] [2021-11-05 20:03:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:09,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:03:09,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:09,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033239544] [2021-11-05 20:03:09,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033239544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:09,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:09,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:09,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654957946] [2021-11-05 20:03:09,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:09,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:09,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:09,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:09,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:09,785 INFO L87 Difference]: Start difference. First operand 28602 states and 38539 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:11,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:12,744 INFO L93 Difference]: Finished difference Result 59527 states and 80239 transitions. [2021-11-05 20:03:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-11-05 20:03:12,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:12,812 INFO L225 Difference]: With dead ends: 59527 [2021-11-05 20:03:12,813 INFO L226 Difference]: Without dead ends: 30993 [2021-11-05 20:03:12,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:12,865 INFO L933 BasicCegarLoop]: 23239 mSDtfsCounter, 3088 mSDsluCounter, 20205 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2209.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 43444 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.53ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2384.30ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:12,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3088 Valid, 43444 Invalid, 88 Unknown, 0 Unchecked, 22.53ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2384.30ms Time] [2021-11-05 20:03:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30993 states. [2021-11-05 20:03:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30993 to 30983. [2021-11-05 20:03:13,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30983 states, 30976 states have (on average 1.3474625516528926) internal successors, (41739), 30982 states have internal predecessors, (41739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30983 states to 30983 states and 41739 transitions. [2021-11-05 20:03:13,581 INFO L78 Accepts]: Start accepts. Automaton has 30983 states and 41739 transitions. Word has length 101 [2021-11-05 20:03:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:13,582 INFO L470 AbstractCegarLoop]: Abstraction has 30983 states and 41739 transitions. [2021-11-05 20:03:13,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 30983 states and 41739 transitions. [2021-11-05 20:03:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 20:03:13,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:13,588 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:13,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:03:13,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash -658095963, now seen corresponding path program 1 times [2021-11-05 20:03:13,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:13,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674944768] [2021-11-05 20:03:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:13,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 20:03:13,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:13,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674944768] [2021-11-05 20:03:13,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674944768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:13,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:13,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:13,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004359183] [2021-11-05 20:03:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:13,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:13,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:13,800 INFO L87 Difference]: Start difference. First operand 30983 states and 41739 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:15,846 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:16,638 INFO L93 Difference]: Finished difference Result 64279 states and 86619 transitions. [2021-11-05 20:03:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:16,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 138 [2021-11-05 20:03:16,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:16,713 INFO L225 Difference]: With dead ends: 64279 [2021-11-05 20:03:16,713 INFO L226 Difference]: Without dead ends: 33364 [2021-11-05 20:03:16,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:16,767 INFO L933 BasicCegarLoop]: 23351 mSDtfsCounter, 3079 mSDsluCounter, 20218 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2178.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3079 SdHoareTripleChecker+Valid, 43569 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.58ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2353.77ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:16,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3079 Valid, 43569 Invalid, 79 Unknown, 0 Unchecked, 18.58ms Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2353.77ms Time] [2021-11-05 20:03:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33364 states. [2021-11-05 20:03:17,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33364 to 33354. [2021-11-05 20:03:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33354 states, 33347 states have (on average 1.3471976489639248) internal successors, (44925), 33353 states have internal predecessors, (44925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33354 states to 33354 states and 44925 transitions. [2021-11-05 20:03:17,419 INFO L78 Accepts]: Start accepts. Automaton has 33354 states and 44925 transitions. Word has length 138 [2021-11-05 20:03:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:17,420 INFO L470 AbstractCegarLoop]: Abstraction has 33354 states and 44925 transitions. [2021-11-05 20:03:17,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 33354 states and 44925 transitions. [2021-11-05 20:03:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 20:03:17,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:17,423 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:17,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:03:17,423 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:17,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1270176739, now seen corresponding path program 1 times [2021-11-05 20:03:17,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:17,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535659701] [2021-11-05 20:03:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:17,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 20:03:17,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:17,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535659701] [2021-11-05 20:03:17,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535659701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:17,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:17,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:17,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243371352] [2021-11-05 20:03:17,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:17,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:17,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:17,612 INFO L87 Difference]: Start difference. First operand 33354 states and 44925 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:19,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:20,499 INFO L93 Difference]: Finished difference Result 69027 states and 93003 transitions. [2021-11-05 20:03:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:20,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 138 [2021-11-05 20:03:20,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:20,568 INFO L225 Difference]: With dead ends: 69027 [2021-11-05 20:03:20,569 INFO L226 Difference]: Without dead ends: 35741 [2021-11-05 20:03:20,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:20,620 INFO L933 BasicCegarLoop]: 23351 mSDtfsCounter, 6140 mSDsluCounter, 17160 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2181.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6140 SdHoareTripleChecker+Valid, 40511 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.90ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2366.80ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:20,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6140 Valid, 40511 Invalid, 85 Unknown, 0 Unchecked, 17.90ms Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2366.80ms Time] [2021-11-05 20:03:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35741 states. [2021-11-05 20:03:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35741 to 35731. [2021-11-05 20:03:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35731 states, 35724 states have (on average 1.3469096405777627) internal successors, (48117), 35730 states have internal predecessors, (48117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:21,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35731 states to 35731 states and 48117 transitions. [2021-11-05 20:03:21,266 INFO L78 Accepts]: Start accepts. Automaton has 35731 states and 48117 transitions. Word has length 138 [2021-11-05 20:03:21,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:21,267 INFO L470 AbstractCegarLoop]: Abstraction has 35731 states and 48117 transitions. [2021-11-05 20:03:21,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:21,267 INFO L276 IsEmpty]: Start isEmpty. Operand 35731 states and 48117 transitions. [2021-11-05 20:03:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-05 20:03:21,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:21,270 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:21,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:03:21,270 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash -869442390, now seen corresponding path program 1 times [2021-11-05 20:03:21,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:21,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572540870] [2021-11-05 20:03:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:21,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-05 20:03:21,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:21,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572540870] [2021-11-05 20:03:21,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572540870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:21,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:21,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:21,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482178358] [2021-11-05 20:03:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:21,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:21,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:21,627 INFO L87 Difference]: Start difference. First operand 35731 states and 48117 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:23,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:24,468 INFO L93 Difference]: Finished difference Result 73777 states and 99379 transitions. [2021-11-05 20:03:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:24,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 183 [2021-11-05 20:03:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:24,532 INFO L225 Difference]: With dead ends: 73777 [2021-11-05 20:03:24,533 INFO L226 Difference]: Without dead ends: 38114 [2021-11-05 20:03:24,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:24,575 INFO L933 BasicCegarLoop]: 20368 mSDtfsCounter, 3082 mSDsluCounter, 20216 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2174.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 40584 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.15ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2339.93ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:24,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3082 Valid, 40584 Invalid, 81 Unknown, 0 Unchecked, 17.15ms Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2339.93ms Time] [2021-11-05 20:03:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38114 states. [2021-11-05 20:03:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38114 to 38104. [2021-11-05 20:03:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38104 states, 38097 states have (on average 1.3466939654041001) internal successors, (51305), 38103 states have internal predecessors, (51305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38104 states to 38104 states and 51305 transitions. [2021-11-05 20:03:25,242 INFO L78 Accepts]: Start accepts. Automaton has 38104 states and 51305 transitions. Word has length 183 [2021-11-05 20:03:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:25,243 INFO L470 AbstractCegarLoop]: Abstraction has 38104 states and 51305 transitions. [2021-11-05 20:03:25,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 38104 states and 51305 transitions. [2021-11-05 20:03:25,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-05 20:03:25,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:25,248 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:25,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 20:03:25,249 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:25,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:25,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1058830312, now seen corresponding path program 1 times [2021-11-05 20:03:25,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:25,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891748115] [2021-11-05 20:03:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:25,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-05 20:03:25,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:25,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891748115] [2021-11-05 20:03:25,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891748115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:25,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:25,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:25,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201337447] [2021-11-05 20:03:25,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:25,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:25,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:25,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:25,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:25,427 INFO L87 Difference]: Start difference. First operand 38104 states and 51305 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:27,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:28,343 INFO L93 Difference]: Finished difference Result 78525 states and 105759 transitions. [2021-11-05 20:03:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:28,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 183 [2021-11-05 20:03:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:28,408 INFO L225 Difference]: With dead ends: 78525 [2021-11-05 20:03:28,409 INFO L226 Difference]: Without dead ends: 40489 [2021-11-05 20:03:28,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:28,461 INFO L933 BasicCegarLoop]: 23351 mSDtfsCounter, 3091 mSDsluCounter, 20208 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2174.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 43559 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.52ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2345.27ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:28,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3091 Valid, 43559 Invalid, 83 Unknown, 0 Unchecked, 17.52ms Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2345.27ms Time] [2021-11-05 20:03:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40489 states. [2021-11-05 20:03:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40489 to 40479. [2021-11-05 20:03:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40479 states, 40472 states have (on average 1.346486459774659) internal successors, (54495), 40478 states have internal predecessors, (54495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40479 states to 40479 states and 54495 transitions. [2021-11-05 20:03:29,268 INFO L78 Accepts]: Start accepts. Automaton has 40479 states and 54495 transitions. Word has length 183 [2021-11-05 20:03:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:29,268 INFO L470 AbstractCegarLoop]: Abstraction has 40479 states and 54495 transitions. [2021-11-05 20:03:29,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 40479 states and 54495 transitions. [2021-11-05 20:03:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-05 20:03:29,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:29,273 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:29,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 20:03:29,273 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:29,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1484080607, now seen corresponding path program 1 times [2021-11-05 20:03:29,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:29,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298280606] [2021-11-05 20:03:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:29,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 20:03:29,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:29,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298280606] [2021-11-05 20:03:29,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298280606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:29,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:29,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 20:03:29,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246080354] [2021-11-05 20:03:29,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:29,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:03:29,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:29,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:03:29,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:03:29,472 INFO L87 Difference]: Start difference. First operand 40479 states and 54495 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:31,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:33,329 INFO L93 Difference]: Finished difference Result 123624 states and 166464 transitions. [2021-11-05 20:03:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 20:03:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 210 [2021-11-05 20:03:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:33,591 INFO L225 Difference]: With dead ends: 123624 [2021-11-05 20:03:33,592 INFO L226 Difference]: Without dead ends: 83213 [2021-11-05 20:03:33,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:03:33,656 INFO L933 BasicCegarLoop]: 37280 mSDtfsCounter, 32634 mSDsluCounter, 54288 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2329.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32634 SdHoareTripleChecker+Valid, 91568 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.62ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2553.40ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:33,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32634 Valid, 91568 Invalid, 134 Unknown, 0 Unchecked, 65.62ms Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 2553.40ms Time] [2021-11-05 20:03:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83213 states. [2021-11-05 20:03:34,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83213 to 42840. [2021-11-05 20:03:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42840 states, 42833 states have (on average 1.346415147199589) internal successors, (57671), 42839 states have internal predecessors, (57671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42840 states to 42840 states and 57671 transitions. [2021-11-05 20:03:34,642 INFO L78 Accepts]: Start accepts. Automaton has 42840 states and 57671 transitions. Word has length 210 [2021-11-05 20:03:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:34,642 INFO L470 AbstractCegarLoop]: Abstraction has 42840 states and 57671 transitions. [2021-11-05 20:03:34,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:34,643 INFO L276 IsEmpty]: Start isEmpty. Operand 42840 states and 57671 transitions. [2021-11-05 20:03:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-05 20:03:34,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:34,646 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:34,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 20:03:34,647 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2140552918, now seen corresponding path program 1 times [2021-11-05 20:03:34,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:34,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624359452] [2021-11-05 20:03:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:34,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 20:03:34,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:34,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624359452] [2021-11-05 20:03:34,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624359452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:34,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:34,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 20:03:34,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810950316] [2021-11-05 20:03:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:34,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:03:34,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:03:34,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:03:34,977 INFO L87 Difference]: Start difference. First operand 42840 states and 57671 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:37,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:38,685 INFO L93 Difference]: Finished difference Result 128356 states and 172836 transitions. [2021-11-05 20:03:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 20:03:38,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 211 [2021-11-05 20:03:38,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:38,835 INFO L225 Difference]: With dead ends: 128356 [2021-11-05 20:03:38,835 INFO L226 Difference]: Without dead ends: 85584 [2021-11-05 20:03:38,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:03:38,904 INFO L933 BasicCegarLoop]: 37406 mSDtfsCounter, 32386 mSDsluCounter, 54544 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2264.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32386 SdHoareTripleChecker+Valid, 91950 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.59ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2440.63ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:38,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32386 Valid, 91950 Invalid, 144 Unknown, 0 Unchecked, 51.59ms Time], IncrementalHoareTripleChecker [12 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 2440.63ms Time] [2021-11-05 20:03:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85584 states. [2021-11-05 20:03:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85584 to 45211. [2021-11-05 20:03:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45211 states, 45204 states have (on average 1.3462746659587648) internal successors, (60857), 45210 states have internal predecessors, (60857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45211 states to 45211 states and 60857 transitions. [2021-11-05 20:03:40,287 INFO L78 Accepts]: Start accepts. Automaton has 45211 states and 60857 transitions. Word has length 211 [2021-11-05 20:03:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:40,288 INFO L470 AbstractCegarLoop]: Abstraction has 45211 states and 60857 transitions. [2021-11-05 20:03:40,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 45211 states and 60857 transitions. [2021-11-05 20:03:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-05 20:03:40,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:40,293 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:40,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 20:03:40,293 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:40,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1539296608, now seen corresponding path program 1 times [2021-11-05 20:03:40,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:40,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859267981] [2021-11-05 20:03:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:40,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 20:03:40,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:40,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859267981] [2021-11-05 20:03:40,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859267981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:40,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:40,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 20:03:40,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876647256] [2021-11-05 20:03:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:40,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:03:40,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:03:40,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:03:40,616 INFO L87 Difference]: Start difference. First operand 45211 states and 60857 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:42,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:44,728 INFO L93 Difference]: Finished difference Result 133096 states and 179210 transitions. [2021-11-05 20:03:44,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 20:03:44,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 212 [2021-11-05 20:03:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:44,877 INFO L225 Difference]: With dead ends: 133096 [2021-11-05 20:03:44,877 INFO L226 Difference]: Without dead ends: 87953 [2021-11-05 20:03:44,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:03:44,936 INFO L933 BasicCegarLoop]: 40432 mSDtfsCounter, 26334 mSDsluCounter, 60600 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2299.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26334 SdHoareTripleChecker+Valid, 101032 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.80ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2522.59ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:44,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26334 Valid, 101032 Invalid, 148 Unknown, 0 Unchecked, 51.80ms Time], IncrementalHoareTripleChecker [14 Valid, 133 Invalid, 1 Unknown, 0 Unchecked, 2522.59ms Time] [2021-11-05 20:03:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87953 states. [2021-11-05 20:03:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87953 to 47580. [2021-11-05 20:03:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47580 states, 47573 states have (on average 1.3461627393689697) internal successors, (64041), 47579 states have internal predecessors, (64041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47580 states to 47580 states and 64041 transitions. [2021-11-05 20:03:46,446 INFO L78 Accepts]: Start accepts. Automaton has 47580 states and 64041 transitions. Word has length 212 [2021-11-05 20:03:46,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:46,447 INFO L470 AbstractCegarLoop]: Abstraction has 47580 states and 64041 transitions. [2021-11-05 20:03:46,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 47580 states and 64041 transitions. [2021-11-05 20:03:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-05 20:03:46,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:46,451 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:46,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 20:03:46,451 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash 224388048, now seen corresponding path program 1 times [2021-11-05 20:03:46,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:46,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851244907] [2021-11-05 20:03:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:46,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-05 20:03:46,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:46,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851244907] [2021-11-05 20:03:46,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851244907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:46,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:46,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:46,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233043794] [2021-11-05 20:03:46,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:46,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:46,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:46,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:46,621 INFO L87 Difference]: Start difference. First operand 47580 states and 64041 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:48,981 INFO L93 Difference]: Finished difference Result 126276 states and 169905 transitions. [2021-11-05 20:03:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:48,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 213 [2021-11-05 20:03:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:49,120 INFO L225 Difference]: With dead ends: 126276 [2021-11-05 20:03:49,120 INFO L226 Difference]: Without dead ends: 78764 [2021-11-05 20:03:49,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:49,199 INFO L933 BasicCegarLoop]: 35974 mSDtfsCounter, 19997 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 785.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19997 SdHoareTripleChecker+Valid, 52210 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.35ms SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 863.27ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:49,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19997 Valid, 52210 Invalid, 397 Unknown, 0 Unchecked, 31.35ms Time], IncrementalHoareTripleChecker [123 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 863.27ms Time] [2021-11-05 20:03:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78764 states. [2021-11-05 20:03:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78764 to 48382. [2021-11-05 20:03:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48382 states, 48375 states have (on average 1.3403410852713178) internal successors, (64839), 48381 states have internal predecessors, (64839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48382 states to 48382 states and 64839 transitions. [2021-11-05 20:03:50,896 INFO L78 Accepts]: Start accepts. Automaton has 48382 states and 64839 transitions. Word has length 213 [2021-11-05 20:03:50,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:50,897 INFO L470 AbstractCegarLoop]: Abstraction has 48382 states and 64839 transitions. [2021-11-05 20:03:50,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:50,897 INFO L276 IsEmpty]: Start isEmpty. Operand 48382 states and 64839 transitions. [2021-11-05 20:03:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-05 20:03:50,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:50,901 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:50,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 20:03:50,901 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 20:03:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1063223655, now seen corresponding path program 1 times [2021-11-05 20:03:50,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:50,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056140725] [2021-11-05 20:03:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:50,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-05 20:03:51,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:51,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056140725] [2021-11-05 20:03:51,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056140725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:51,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:51,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 20:03:51,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332201508] [2021-11-05 20:03:51,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:51,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:03:51,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:03:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:03:51,089 INFO L87 Difference]: Start difference. First operand 48382 states and 64839 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:03:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:55,625 INFO L93 Difference]: Finished difference Result 173654 states and 233074 transitions. [2021-11-05 20:03:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:03:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2021-11-05 20:03:55,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:55,868 INFO L225 Difference]: With dead ends: 173654 [2021-11-05 20:03:55,868 INFO L226 Difference]: Without dead ends: 125340 [2021-11-05 20:03:55,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.55ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:03:55,947 INFO L933 BasicCegarLoop]: 36001 mSDtfsCounter, 39581 mSDsluCounter, 52249 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1477.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39581 SdHoareTripleChecker+Valid, 88250 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.18ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1626.31ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:55,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39581 Valid, 88250 Invalid, 566 Unknown, 0 Unchecked, 65.18ms Time], IncrementalHoareTripleChecker [113 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 1626.31ms Time] [2021-11-05 20:03:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125340 states.