./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-tehuti-tehuti.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.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 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 09:14:03,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 09:14:03,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 09:14:03,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 09:14:03,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 09:14:03,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 09:14:03,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 09:14:03,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 09:14:03,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 09:14:03,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 09:14:03,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 09:14:03,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 09:14:03,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 09:14:03,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 09:14:03,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 09:14:03,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 09:14:03,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 09:14:03,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 09:14:03,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 09:14:03,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 09:14:03,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 09:14:03,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 09:14:03,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 09:14:03,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 09:14:03,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 09:14:03,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 09:14:03,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 09:14:03,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 09:14:03,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 09:14:03,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 09:14:03,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 09:14:03,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 09:14:03,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 09:14:03,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 09:14:03,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 09:14:03,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 09:14:03,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 09:14:03,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 09:14:03,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 09:14:03,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 09:14:03,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 09:14:03,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 09:14:03,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 09:14:03,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 09:14:03,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 09:14:03,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 09:14:03,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 09:14:03,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 09:14:03,323 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 09:14:03,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 09:14:03,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 09:14:03,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 09:14:03,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 09:14:03,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 09:14:03,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 09:14:03,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 09:14:03,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 09:14:03,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 09:14:03,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 09:14:03,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 09:14:03,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 09:14:03,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:14:03,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 09:14:03,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 09:14:03,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 09:14:03,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 09:14:03,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 09:14:03,326 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 09:14:03,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 09:14:03,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 09:14:03,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 09:14:03,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 [2021-11-04 09:14:03,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 09:14:03,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 09:14:03,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 09:14:03,560 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 09:14:03,561 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 09:14:03,562 INFO L432 ainManager$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-tehuti-tehuti.cil.i [2021-11-04 09:14:03,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b212e69/bff55a4d03d643b7ba38f3bf86389654/FLAG3aa8d1633 [2021-11-04 09:14:04,276 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 09:14:04,276 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-tehuti-tehuti.cil.i [2021-11-04 09:14:04,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b212e69/bff55a4d03d643b7ba38f3bf86389654/FLAG3aa8d1633 [2021-11-04 09:14:04,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b212e69/bff55a4d03d643b7ba38f3bf86389654 [2021-11-04 09:14:04,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 09:14:04,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 09:14:04,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 09:14:04,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 09:14:04,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 09:14:04,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:14:04" (1/1) ... [2021-11-04 09:14:04,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7d34ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:04, skipping insertion in model container [2021-11-04 09:14:04,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:14:04" (1/1) ... [2021-11-04 09:14:04,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 09:14:04,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 09:14:07,110 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-tehuti-tehuti.cil.i[376704,376717] [2021-11-04 09:14:07,113 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-tehuti-tehuti.cil.i[376849,376862] [2021-11-04 09:14:07,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:14:07,201 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 09:14:07,536 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-tehuti-tehuti.cil.i[376704,376717] [2021-11-04 09:14:07,537 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-tehuti-tehuti.cil.i[376849,376862] [2021-11-04 09:14:07,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:14:07,650 INFO L208 MainTranslator]: Completed translation [2021-11-04 09:14:07,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07 WrapperNode [2021-11-04 09:14:07,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 09:14:07,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 09:14:07,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 09:14:07,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 09:14:07,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:07,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:08,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 09:14:08,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 09:14:08,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 09:14:08,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 09:14:08,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:08,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:08,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:08,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:08,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:09,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:09,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:09,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 09:14:09,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 09:14:09,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 09:14:09,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 09:14:09,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (1/1) ... [2021-11-04 09:14:09,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:14:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 09:14:09,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 09:14:09,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 09:14:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 09:14:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 09:14:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 09:14:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 09:14:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 09:14:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 09:14:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 09:14:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 09:14:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 09:14:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 09:14:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 09:14:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 09:14:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 09:14:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 09:14:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 09:18:22,251 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 09:18:22,252 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-04 09:18:22,252 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 09:18:22,253 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 09:18:22,254 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 09:18:22,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 09:18:22,285 INFO L299 CfgBuilder]: Removed 5622 assume(true) statements. [2021-11-04 09:18:22,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:18:22 BoogieIcfgContainer [2021-11-04 09:18:22,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 09:18:22,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 09:18:22,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 09:18:22,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 09:18:22,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 09:14:04" (1/3) ... [2021-11-04 09:18:22,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3cbc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:18:22, skipping insertion in model container [2021-11-04 09:18:22,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:14:07" (2/3) ... [2021-11-04 09:18:22,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3cbc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:18:22, skipping insertion in model container [2021-11-04 09:18:22,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:18:22" (3/3) ... [2021-11-04 09:18:22,299 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2021-11-04 09:18:22,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 09:18:22,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-04 09:18:22,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 09:18:22,366 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 09:18:22,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-04 09:18:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 5242 states, 5228 states have (on average 1.3414307574598316) internal successors, (7013), 5241 states have internal predecessors, (7013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:18:22,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-04 09:18:22,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:18:22,446 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] [2021-11-04 09:18:22,448 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-04 09:18:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:18:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1610179768, now seen corresponding path program 1 times [2021-11-04 09:18:22,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:18:22,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140026927] [2021-11-04 09:18:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:18:22,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:18:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:18:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:18:23,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:18:23,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140026927] [2021-11-04 09:18:23,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140026927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:18:23,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:18:23,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:18:23,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619971161] [2021-11-04 09:18:23,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:18:23,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:18:23,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:18:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:18:23,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:18:23,353 INFO L87 Difference]: Start difference. First operand has 5242 states, 5228 states have (on average 1.3414307574598316) internal successors, (7013), 5241 states have internal predecessors, (7013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:18:25,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:18:48,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:19:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:19:18,838 INFO L93 Difference]: Finished difference Result 12699 states and 16987 transitions. [2021-11-04 09:19:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:19:18,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-04 09:19:18,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:19:18,896 INFO L225 Difference]: With dead ends: 12699 [2021-11-04 09:19:18,896 INFO L226 Difference]: Without dead ends: 7251 [2021-11-04 09:19:18,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:19:18,916 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 5717 mSDsluCounter, 3994 mSDsCounter, 0 mSdLazyCounter, 10611 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50046.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5717 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 10635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 112.43ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 10611 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54116.90ms IncrementalHoareTripleChecker+Time [2021-11-04 09:19:18,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5717 Valid, 207 Invalid, 10635 Unknown, 0 Unchecked, 112.43ms Time], IncrementalHoareTripleChecker [22 Valid, 10611 Invalid, 2 Unknown, 0 Unchecked, 54116.90ms Time] [2021-11-04 09:19:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2021-11-04 09:19:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 6714. [2021-11-04 09:19:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6714 states, 6700 states have (on average 1.2971641791044777) internal successors, (8691), 6713 states have internal predecessors, (8691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 8691 transitions. [2021-11-04 09:19:19,132 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 8691 transitions. Word has length 42 [2021-11-04 09:19:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:19:19,132 INFO L470 AbstractCegarLoop]: Abstraction has 6714 states and 8691 transitions. [2021-11-04 09:19:19,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 8691 transitions. [2021-11-04 09:19:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-04 09:19:19,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:19:19,135 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] [2021-11-04 09:19:19,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 09:19:19,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-04 09:19:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:19:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1855051487, now seen corresponding path program 1 times [2021-11-04 09:19:19,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:19:19,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065779179] [2021-11-04 09:19:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:19:19,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:19:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:19:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:19:19,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:19:19,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065779179] [2021-11-04 09:19:19,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065779179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:19:19,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:19:19,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:19:19,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056680111] [2021-11-04 09:19:19,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:19:19,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:19:19,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:19:19,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:19:19,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:19:19,571 INFO L87 Difference]: Start difference. First operand 6714 states and 8691 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:21,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:19:58,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:04,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:21,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:25,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:29,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:20:29,382 INFO L93 Difference]: Finished difference Result 15294 states and 19792 transitions. [2021-11-04 09:20:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:20:29,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2021-11-04 09:20:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:20:29,412 INFO L225 Difference]: With dead ends: 15294 [2021-11-04 09:20:29,415 INFO L226 Difference]: Without dead ends: 8624 [2021-11-04 09:20:29,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:20:29,429 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1905 mSDsluCounter, 6460 mSDsCounter, 0 mSdLazyCounter, 13214 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63885.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.70ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13214 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68821.81ms IncrementalHoareTripleChecker+Time [2021-11-04 09:20:29,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 0 Invalid, 13234 Unknown, 0 Unchecked, 84.70ms Time], IncrementalHoareTripleChecker [16 Valid, 13214 Invalid, 4 Unknown, 0 Unchecked, 68821.81ms Time] [2021-11-04 09:20:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2021-11-04 09:20:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 8608. [2021-11-04 09:20:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8608 states, 8594 states have (on average 1.2925296718640913) internal successors, (11108), 8607 states have internal predecessors, (11108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:20:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8608 states to 8608 states and 11108 transitions. [2021-11-04 09:20:29,630 INFO L78 Accepts]: Start accepts. Automaton has 8608 states and 11108 transitions. Word has length 47 [2021-11-04 09:20:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:20:29,635 INFO L470 AbstractCegarLoop]: Abstraction has 8608 states and 11108 transitions. [2021-11-04 09:20:29,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:20:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand 8608 states and 11108 transitions. [2021-11-04 09:20:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 09:20:29,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:20:29,639 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] [2021-11-04 09:20:29,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 09:20:29,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-04 09:20:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:20:29,640 INFO L85 PathProgramCache]: Analyzing trace with hash -232223923, now seen corresponding path program 1 times [2021-11-04 09:20:29,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:20:29,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714167958] [2021-11-04 09:20:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:20:29,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:20:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:20:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:20:30,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:20:30,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714167958] [2021-11-04 09:20:30,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714167958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:20:30,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:20:30,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:20:30,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635123712] [2021-11-04 09:20:30,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:20:30,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:20:30,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:20:30,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:20:30,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:20:30,082 INFO L87 Difference]: Start difference. First operand 8608 states and 11108 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:20:32,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:21:21,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:21:36,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:21:41,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:21:41,074 INFO L93 Difference]: Finished difference Result 19082 states and 24626 transitions. [2021-11-04 09:21:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:21:41,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-04 09:21:41,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:21:41,108 INFO L225 Difference]: With dead ends: 19082 [2021-11-04 09:21:41,108 INFO L226 Difference]: Without dead ends: 10518 [2021-11-04 09:21:41,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:21:41,131 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1911 mSDsluCounter, 6446 mSDsCounter, 0 mSdLazyCounter, 13012 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64125.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.71ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 13012 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69976.50ms IncrementalHoareTripleChecker+Time [2021-11-04 09:21:41,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 0 Invalid, 13031 Unknown, 0 Unchecked, 72.71ms Time], IncrementalHoareTripleChecker [17 Valid, 13012 Invalid, 2 Unknown, 0 Unchecked, 69976.50ms Time] [2021-11-04 09:21:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10518 states. [2021-11-04 09:21:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10518 to 10502. [2021-11-04 09:21:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 10488 states have (on average 1.2897597254004576) internal successors, (13527), 10501 states have internal predecessors, (13527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:21:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 13527 transitions. [2021-11-04 09:21:41,347 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 13527 transitions. Word has length 78 [2021-11-04 09:21:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:21:41,349 INFO L470 AbstractCegarLoop]: Abstraction has 10502 states and 13527 transitions. [2021-11-04 09:21:41,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:21:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 13527 transitions. [2021-11-04 09:21:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-04 09:21:41,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:21:41,355 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-04 09:21:41,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 09:21:41,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-04 09:21:41,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:21:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash 585100769, now seen corresponding path program 1 times [2021-11-04 09:21:41,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:21:41,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581623648] [2021-11-04 09:21:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:21:41,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:21:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:21:41,730 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 09:21:41,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:21:41,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581623648] [2021-11-04 09:21:41,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581623648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:21:41,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:21:41,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:21:41,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571835680] [2021-11-04 09:21:41,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:21:41,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:21:41,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:21:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:21:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:21:41,732 INFO L87 Difference]: Start difference. First operand 10502 states and 13527 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:21:43,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:22:28,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:22:43,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:02,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:23:06,824 INFO L93 Difference]: Finished difference Result 22860 states and 29444 transitions. [2021-11-04 09:23:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:23:06,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 115 [2021-11-04 09:23:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:23:06,864 INFO L225 Difference]: With dead ends: 22860 [2021-11-04 09:23:06,864 INFO L226 Difference]: Without dead ends: 12402 [2021-11-04 09:23:06,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:23:06,878 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1905 mSDsluCounter, 6457 mSDsCounter, 0 mSdLazyCounter, 14943 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77317.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.38ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14943 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84081.97ms IncrementalHoareTripleChecker+Time [2021-11-04 09:23:06,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 0 Invalid, 14960 Unknown, 0 Unchecked, 82.38ms Time], IncrementalHoareTripleChecker [13 Valid, 14943 Invalid, 4 Unknown, 0 Unchecked, 84081.97ms Time] [2021-11-04 09:23:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12402 states. [2021-11-04 09:23:07,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12402 to 12386. [2021-11-04 09:23:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12386 states, 12372 states have (on average 1.287746524409958) internal successors, (15932), 12385 states have internal predecessors, (15932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:23:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12386 states to 12386 states and 15932 transitions. [2021-11-04 09:23:07,058 INFO L78 Accepts]: Start accepts. Automaton has 12386 states and 15932 transitions. Word has length 115 [2021-11-04 09:23:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:23:07,058 INFO L470 AbstractCegarLoop]: Abstraction has 12386 states and 15932 transitions. [2021-11-04 09:23:07,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:23:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 12386 states and 15932 transitions. [2021-11-04 09:23:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-04 09:23:07,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:23:07,071 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-04 09:23:07,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 09:23:07,071 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-04 09:23:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:23:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1971304163, now seen corresponding path program 1 times [2021-11-04 09:23:07,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:23:07,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069770086] [2021-11-04 09:23:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:23:07,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:23:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:23:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 09:23:07,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:23:07,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069770086] [2021-11-04 09:23:07,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069770086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:23:07,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:23:07,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 09:23:07,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399502892] [2021-11-04 09:23:07,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:23:07,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:23:07,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:23:07,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:23:07,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:23:07,612 INFO L87 Difference]: Start difference. First operand 12386 states and 15932 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:23:09,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:24,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:44,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:23:51,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:08,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:17,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:25,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:24:36,045 INFO L93 Difference]: Finished difference Result 36272 states and 46658 transitions. [2021-11-04 09:24:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:24:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-04 09:24:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:24:36,098 INFO L225 Difference]: With dead ends: 36272 [2021-11-04 09:24:36,098 INFO L226 Difference]: Without dead ends: 23930 [2021-11-04 09:24:36,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:24:36,122 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5407 mSDsluCounter, 6437 mSDsCounter, 0 mSdLazyCounter, 12977 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78284.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5407 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.92ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12977 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87029.74ms IncrementalHoareTripleChecker+Time [2021-11-04 09:24:36,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5407 Valid, 0 Invalid, 12993 Unknown, 0 Unchecked, 79.92ms Time], IncrementalHoareTripleChecker [10 Valid, 12977 Invalid, 6 Unknown, 0 Unchecked, 87029.74ms Time] [2021-11-04 09:24:36,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23930 states. [2021-11-04 09:24:36,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23930 to 23908. [2021-11-04 09:24:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23908 states, 23894 states have (on average 1.2862643341424624) internal successors, (30734), 23907 states have internal predecessors, (30734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:24:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23908 states to 23908 states and 30734 transitions. [2021-11-04 09:24:36,588 INFO L78 Accepts]: Start accepts. Automaton has 23908 states and 30734 transitions. Word has length 115 [2021-11-04 09:24:36,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:24:36,589 INFO L470 AbstractCegarLoop]: Abstraction has 23908 states and 30734 transitions. [2021-11-04 09:24:36,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:24:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 23908 states and 30734 transitions. [2021-11-04 09:24:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-04 09:24:36,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:24:36,594 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-04 09:24:36,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 09:24:36,595 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-04 09:24:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:24:36,596 INFO L85 PathProgramCache]: Analyzing trace with hash 980688957, now seen corresponding path program 1 times [2021-11-04 09:24:36,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:24:36,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116995785] [2021-11-04 09:24:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:24:36,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:24:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:24:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 09:24:37,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:24:37,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116995785] [2021-11-04 09:24:37,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116995785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:24:37,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:24:37,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:24:37,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168727939] [2021-11-04 09:24:37,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:24:37,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:24:37,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:24:37,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:24:37,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:24:37,070 INFO L87 Difference]: Start difference. First operand 23908 states and 30734 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:24:39,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:44,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:24:46,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:25:19,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:25:54,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:26:41,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:27:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:27:42,736 INFO L93 Difference]: Finished difference Result 81610 states and 104332 transitions. [2021-11-04 09:27:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:27:42,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 116 [2021-11-04 09:27:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:27:42,899 INFO L225 Difference]: With dead ends: 81610 [2021-11-04 09:27:42,899 INFO L226 Difference]: Without dead ends: 57746 [2021-11-04 09:27:42,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:27:42,938 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 17050 mSDsluCounter, 18373 mSDsCounter, 0 mSdLazyCounter, 30551 mSolverCounterSat, 57 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161018.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17050 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 286.32ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 30551 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182253.15ms IncrementalHoareTripleChecker+Time [2021-11-04 09:27:42,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17050 Valid, 0 Invalid, 30610 Unknown, 0 Unchecked, 286.32ms Time], IncrementalHoareTripleChecker [57 Valid, 30551 Invalid, 2 Unknown, 0 Unchecked, 182253.15ms Time] [2021-11-04 09:27:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57746 states. [2021-11-04 09:27:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57746 to 35630. [2021-11-04 09:27:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35630 states, 35616 states have (on average 1.2766172506738545) internal successors, (45468), 35629 states have internal predecessors, (45468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:27:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35630 states to 35630 states and 45468 transitions. [2021-11-04 09:27:43,767 INFO L78 Accepts]: Start accepts. Automaton has 35630 states and 45468 transitions. Word has length 116 [2021-11-04 09:27:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:27:43,768 INFO L470 AbstractCegarLoop]: Abstraction has 35630 states and 45468 transitions. [2021-11-04 09:27:43,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:27:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 35630 states and 45468 transitions. [2021-11-04 09:27:43,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-04 09:27:43,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:27:43,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-04 09:27:43,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 09:27:43,773 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-04 09:27:43,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:27:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 336537598, now seen corresponding path program 1 times [2021-11-04 09:27:43,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:27:43,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217243852] [2021-11-04 09:27:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:27:43,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:27:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:27:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 09:27:44,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:27:44,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217243852] [2021-11-04 09:27:44,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217243852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:27:44,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:27:44,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:27:44,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262592018] [2021-11-04 09:27:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:27:44,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:27:44,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:27:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:27:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:27:44,468 INFO L87 Difference]: Start difference. First operand 35630 states and 45468 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:27:46,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15