./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-jme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.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 375b130c0dbad771cfaef84781fc161e5ae1fb4f9856cbf4d088e8198a97450e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:37:09,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:37:09,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:37:09,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:37:09,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:37:09,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:37:09,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:37:09,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:37:09,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:37:09,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:37:09,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:37:09,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:37:09,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:37:09,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:37:09,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:37:09,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:37:09,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:37:09,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:37:09,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:37:09,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:37:09,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:37:09,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:37:09,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:37:09,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:37:09,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:37:09,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:37:09,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:37:09,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:37:09,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:37:09,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:37:09,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:37:09,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:37:09,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:37:09,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:37:09,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:37:09,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:37:09,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:37:09,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:37:09,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:37:09,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:37:09,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:37:09,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:37:09,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:37:09,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:37:09,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:37:09,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:37:09,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:37:09,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:37:09,345 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:37:09,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:37:09,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:37:09,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:37:09,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:37:09,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:37:09,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:37:09,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:37:09,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:37:09,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:37:09,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:37:09,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:37:09,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:37:09,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:37:09,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:37:09,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:37:09,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:37:09,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:37:09,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:37:09,348 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:37:09,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:37:09,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:37:09,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:37:09,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375b130c0dbad771cfaef84781fc161e5ae1fb4f9856cbf4d088e8198a97450e [2021-11-07 16:37:09,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:37:09,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:37:09,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:37:09,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:37:09,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:37:09,557 INFO L432 ainManager$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-jme.cil.i [2021-11-07 16:37:09,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a697e6d77/166bd6748fac42cf9dd49b3147b28f4f/FLAG3fa5224b5 [2021-11-07 16:37:10,329 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:37:10,331 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-jme.cil.i [2021-11-07 16:37:10,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a697e6d77/166bd6748fac42cf9dd49b3147b28f4f/FLAG3fa5224b5 [2021-11-07 16:37:10,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a697e6d77/166bd6748fac42cf9dd49b3147b28f4f [2021-11-07 16:37:10,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:37:10,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:37:10,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:37:10,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:37:10,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:37:10,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:37:10" (1/1) ... [2021-11-07 16:37:10,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c461ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:10, skipping insertion in model container [2021-11-07 16:37:10,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:37:10" (1/1) ... [2021-11-07 16:37:10,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:37:10,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:37:13,904 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-jme.cil.i[466142,466155] [2021-11-07 16:37:13,906 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-jme.cil.i[466287,466300] [2021-11-07 16:37:13,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:37:13,969 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:37:14,277 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-jme.cil.i[466142,466155] [2021-11-07 16:37:14,278 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-jme.cil.i[466287,466300] [2021-11-07 16:37:14,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:37:14,513 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:37:14,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14 WrapperNode [2021-11-07 16:37:14,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:37:14,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:37:14,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:37:14,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:37:14,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:14,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:26,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:37:26,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:37:26,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:37:26,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:37:26,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:26,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:27,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:27,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:30,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:31,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:31,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:32,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:37:32,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:37:32,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:37:32,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:37:32,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (1/1) ... [2021-11-07 16:37:32,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:37:32,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:37:32,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 16:37:32,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 16:37:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-07 16:37:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:37:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-07 16:37:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:37:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:37:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:37:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:37:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:37:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:37:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:37:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:37:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:37:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:37:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:37:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:37:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:37:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:41:13,616 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 16:41:13,617 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 16:41:13,617 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 16:41:13,617 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-07 16:41:13,617 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 16:41:13,618 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 16:41:13,620 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:41:13,621 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 16:41:13,621 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 16:41:13,621 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 16:41:13,621 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:41:13,621 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:41:13,637 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-07 16:41:13,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:41:13,749 INFO L299 CfgBuilder]: Removed 83128 assume(true) statements. [2021-11-07 16:41:13,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:41:13 BoogieIcfgContainer [2021-11-07 16:41:13,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:41:13,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:41:13,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:41:13,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:41:13,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:37:10" (1/3) ... [2021-11-07 16:41:13,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:41:13, skipping insertion in model container [2021-11-07 16:41:13,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:14" (2/3) ... [2021-11-07 16:41:13,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:41:13, skipping insertion in model container [2021-11-07 16:41:13,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:41:13" (3/3) ... [2021-11-07 16:41:13,794 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-07 16:41:13,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:41:13,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 16:41:13,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:41:13,951 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 16:41:13,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 16:41:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 51308 states, 51307 states have (on average 1.2058978307053618) internal successors, (61871), 51307 states have internal predecessors, (61871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:41:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 16:41:14,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:41:14,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:41:14,411 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:41:14,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:41:14,414 INFO L85 PathProgramCache]: Analyzing trace with hash 328366182, now seen corresponding path program 1 times [2021-11-07 16:41:14,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:41:14,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187480256] [2021-11-07 16:41:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:41:14,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:41:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:41:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:41:15,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:41:15,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187480256] [2021-11-07 16:41:15,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187480256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:41:15,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:41:15,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:41:15,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788455137] [2021-11-07 16:41:15,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:41:15,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:41:15,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:41:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:41:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:41:15,101 INFO L87 Difference]: Start difference. First operand has 51308 states, 51307 states have (on average 1.2058978307053618) internal successors, (61871), 51307 states have internal predecessors, (61871), 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 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:41:17,163 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 [] [2021-11-07 16:41:20,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:41:20,403 INFO L93 Difference]: Finished difference Result 151758 states and 182801 transitions. [2021-11-07 16:41:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:41:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-07 16:41:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:41:20,745 INFO L225 Difference]: With dead ends: 151758 [2021-11-07 16:41:20,746 INFO L226 Difference]: Without dead ends: 99866 [2021-11-07 16:41:20,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:41:20,885 INFO L933 BasicCegarLoop]: 61232 mSDtfsCounter, 59407 mSDsluCounter, 61127 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2312.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59407 SdHoareTripleChecker+Valid, 122359 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 193.78ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2537.01ms IncrementalHoareTripleChecker+Time [2021-11-07 16:41:20,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59407 Valid, 122359 Invalid, 119 Unknown, 0 Unchecked, 193.78ms Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 1 Unknown, 0 Unchecked, 2537.01ms Time] [2021-11-07 16:41:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99866 states. [2021-11-07 16:41:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99866 to 99149. [2021-11-07 16:41:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99149 states, 99148 states have (on average 1.1945576310162584) internal successors, (118438), 99148 states have internal predecessors, (118438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:41:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99149 states to 99149 states and 118438 transitions. [2021-11-07 16:41:23,578 INFO L78 Accepts]: Start accepts. Automaton has 99149 states and 118438 transitions. Word has length 98 [2021-11-07 16:41:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:41:23,580 INFO L470 AbstractCegarLoop]: Abstraction has 99149 states and 118438 transitions. [2021-11-07 16:41:23,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:41:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 99149 states and 118438 transitions. [2021-11-07 16:41:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-07 16:41:23,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:41:23,722 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:41:23,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:41:23,723 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:41:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:41:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1160277176, now seen corresponding path program 1 times [2021-11-07 16:41:23,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:41:23,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660748389] [2021-11-07 16:41:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:41:23,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:41:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:41:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:41:24,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:41:24,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660748389] [2021-11-07 16:41:24,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660748389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:41:24,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:41:24,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:41:24,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578011891] [2021-11-07 16:41:24,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:41:24,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:41:24,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:41:24,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:41:24,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:41:24,189 INFO L87 Difference]: Start difference. First operand 99149 states and 118438 transitions. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:41:26,241 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 [] [2021-11-07 16:41:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:41:30,193 INFO L93 Difference]: Finished difference Result 285357 states and 340937 transitions. [2021-11-07 16:41:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:41:30,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 465 [2021-11-07 16:41:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:41:30,771 INFO L225 Difference]: With dead ends: 285357 [2021-11-07 16:41:30,771 INFO L226 Difference]: Without dead ends: 186356 [2021-11-07 16:41:30,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:41:30,993 INFO L933 BasicCegarLoop]: 61979 mSDtfsCounter, 53041 mSDsluCounter, 60417 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2237.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53041 SdHoareTripleChecker+Valid, 122396 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 115.47ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2411.98ms IncrementalHoareTripleChecker+Time [2021-11-07 16:41:30,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53041 Valid, 122396 Invalid, 88 Unknown, 0 Unchecked, 115.47ms Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2411.98ms Time] [2021-11-07 16:41:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186356 states. [2021-11-07 16:41:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186356 to 186346. [2021-11-07 16:41:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186346 states, 186345 states have (on average 1.1946872736054093) internal successors, (222624), 186345 states have internal predecessors, (222624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:41:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186346 states to 186346 states and 222624 transitions. [2021-11-07 16:41:34,991 INFO L78 Accepts]: Start accepts. Automaton has 186346 states and 222624 transitions. Word has length 465 [2021-11-07 16:41:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:41:34,992 INFO L470 AbstractCegarLoop]: Abstraction has 186346 states and 222624 transitions. [2021-11-07 16:41:34,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:41:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 186346 states and 222624 transitions. [2021-11-07 16:41:35,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-11-07 16:41:35,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:41:35,539 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:41:35,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:41:35,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:41:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:41:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash 40408307, now seen corresponding path program 1 times [2021-11-07 16:41:35,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:41:35,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632809385] [2021-11-07 16:41:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:41:35,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:41:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:41:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:41:35,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:41:35,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632809385] [2021-11-07 16:41:35,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632809385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:41:35,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:41:35,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:41:35,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612222611] [2021-11-07 16:41:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:41:35,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:41:35,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:41:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:41:35,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:41:35,920 INFO L87 Difference]: Start difference. First operand 186346 states and 222624 transitions. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:41:37,972 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 []