./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-irda-via-ircc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-usb-dev_drivers-net-irda-via-ircc.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 bc34b562a518e1962cb00b051353e0f6c91b97d77e3b06d95f31a41553709599 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 01:20:28,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 01:20:28,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 01:20:28,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 01:20:28,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 01:20:28,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 01:20:28,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 01:20:28,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 01:20:28,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 01:20:28,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 01:20:28,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 01:20:28,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 01:20:28,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 01:20:28,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 01:20:28,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 01:20:28,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 01:20:28,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 01:20:28,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 01:20:28,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 01:20:28,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 01:20:28,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 01:20:28,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 01:20:28,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 01:20:28,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 01:20:28,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 01:20:28,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 01:20:28,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 01:20:28,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 01:20:28,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 01:20:28,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 01:20:28,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 01:20:28,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 01:20:28,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 01:20:28,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 01:20:28,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 01:20:28,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 01:20:28,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 01:20:28,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 01:20:28,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 01:20:28,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 01:20:28,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 01:20:28,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 01:20:28,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 01:20:28,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 01:20:28,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 01:20:28,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 01:20:28,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 01:20:28,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 01:20:28,465 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 01:20:28,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 01:20:28,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 01:20:28,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 01:20:28,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 01:20:28,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 01:20:28,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 01:20:28,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 01:20:28,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 01:20:28,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 01:20:28,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 01:20:28,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 01:20:28,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 01:20:28,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 01:20:28,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 01:20:28,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 01:20:28,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 01:20:28,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 01:20:28,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 01:20:28,469 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 01:20:28,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 01:20:28,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 01:20:28,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 01:20:28,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc34b562a518e1962cb00b051353e0f6c91b97d77e3b06d95f31a41553709599 [2021-11-03 01:20:28,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 01:20:28,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 01:20:28,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 01:20:28,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 01:20:28,906 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 01:20:28,907 INFO L432 ainManager$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-usb-dev_drivers-net-irda-via-ircc.cil.i [2021-11-03 01:20:29,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d635dea5d/9da1d3b0f53840d9828d07154f3f15de/FLAGf88d5c0bf [2021-11-03 01:20:30,086 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 01:20:30,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-irda-via-ircc.cil.i [2021-11-03 01:20:30,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d635dea5d/9da1d3b0f53840d9828d07154f3f15de/FLAGf88d5c0bf [2021-11-03 01:20:30,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d635dea5d/9da1d3b0f53840d9828d07154f3f15de [2021-11-03 01:20:30,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 01:20:30,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 01:20:30,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 01:20:30,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 01:20:30,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 01:20:30,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:20:30" (1/1) ... [2021-11-03 01:20:30,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d77d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:30, skipping insertion in model container [2021-11-03 01:20:30,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:20:30" (1/1) ... [2021-11-03 01:20:30,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 01:20:30,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 01:20:31,926 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-usb-dev_drivers-net-irda-via-ircc.cil.i[295458,295471] [2021-11-03 01:20:31,943 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-usb-dev_drivers-net-irda-via-ircc.cil.i[295605,295618] [2021-11-03 01:20:31,944 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-usb-dev_drivers-net-irda-via-ircc.cil.i[295744,295757] [2021-11-03 01:20:31,944 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-usb-dev_drivers-net-irda-via-ircc.cil.i[295902,295915] [2021-11-03 01:20:31,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 01:20:31,986 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 01:20:32,234 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-usb-dev_drivers-net-irda-via-ircc.cil.i[295458,295471] [2021-11-03 01:20:32,235 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-usb-dev_drivers-net-irda-via-ircc.cil.i[295605,295618] [2021-11-03 01:20:32,235 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-usb-dev_drivers-net-irda-via-ircc.cil.i[295744,295757] [2021-11-03 01:20:32,235 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-usb-dev_drivers-net-irda-via-ircc.cil.i[295902,295915] [2021-11-03 01:20:32,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 01:20:32,348 INFO L208 MainTranslator]: Completed translation [2021-11-03 01:20:32,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32 WrapperNode [2021-11-03 01:20:32,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 01:20:32,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 01:20:32,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 01:20:32,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 01:20:32,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:32,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:36,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 01:20:36,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 01:20:36,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 01:20:36,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 01:20:36,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:36,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:37,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:37,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:38,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:39,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:39,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:40,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 01:20:40,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 01:20:40,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 01:20:40,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 01:20:40,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (1/1) ... [2021-11-03 01:20:40,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 01:20:40,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 01:20:40,238 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) [2021-11-03 01:20:40,255 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 [2021-11-03 01:20:40,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 01:20:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 01:20:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 01:20:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 01:20:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 01:20:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 01:20:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 01:20:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 01:20:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 01:20:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 01:20:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 01:20:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 01:20:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 01:20:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 01:20:40,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 01:20:48,049 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-03 01:20:48,049 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 01:20:48,050 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 01:20:48,052 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 01:20:48,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 01:20:48,112 INFO L299 CfgBuilder]: Removed 28663 assume(true) statements. [2021-11-03 01:20:48,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:20:48 BoogieIcfgContainer [2021-11-03 01:20:48,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 01:20:48,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 01:20:48,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 01:20:48,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 01:20:48,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:20:30" (1/3) ... [2021-11-03 01:20:48,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d2738a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:20:48, skipping insertion in model container [2021-11-03 01:20:48,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:20:32" (2/3) ... [2021-11-03 01:20:48,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d2738a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:20:48, skipping insertion in model container [2021-11-03 01:20:48,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:20:48" (3/3) ... [2021-11-03 01:20:48,139 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-irda-via-ircc.cil.i [2021-11-03 01:20:48,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 01:20:48,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-03 01:20:48,249 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 01:20:48,253 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 [2021-11-03 01:20:48,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-03 01:20:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 21926 states, 21923 states have (on average 1.3656890024175523) internal successors, (29940), 21925 states have internal predecessors, (29940), 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) [2021-11-03 01:20:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 01:20:48,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:20:48,474 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] [2021-11-03 01:20:48,475 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 01:20:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:20:48,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1787303992, now seen corresponding path program 1 times [2021-11-03 01:20:48,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:20:48,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501037388] [2021-11-03 01:20:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:20:48,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:20:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:20:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 01:20:49,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:20:49,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501037388] [2021-11-03 01:20:49,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501037388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:20:49,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:20:49,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:20:49,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563213826] [2021-11-03 01:20:49,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 01:20:49,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:20:49,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 01:20:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:20:49,184 INFO L87 Difference]: Start difference. First operand has 21926 states, 21923 states have (on average 1.3656890024175523) internal successors, (29940), 21925 states have internal predecessors, (29940), 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 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-03 01:20:51,249 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 [] [2021-11-03 01:20:54,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:21:07,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:21:21,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:22:18,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:24:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:24:20,709 INFO L93 Difference]: Finished difference Result 65613 states and 89609 transitions. [2021-11-03 01:24:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 01:24:20,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-03 01:24:20,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:24:20,916 INFO L225 Difference]: With dead ends: 65613 [2021-11-03 01:24:20,917 INFO L226 Difference]: Without dead ends: 43534 [2021-11-03 01:24:20,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:24:20,974 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 29819 mSDsluCounter, 29881 mSDsCounter, 0 mSdLazyCounter, 59593 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169190.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29819 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 59597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 206.11ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207473.50ms IncrementalHoareTripleChecker+Time [2021-11-03 01:24:20,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29819 Valid, 223 Invalid, 59597 Unknown, 0 Unchecked, 206.11ms Time], IncrementalHoareTripleChecker [3 Valid, 59593 Invalid, 1 Unknown, 0 Unchecked, 207473.50ms Time] [2021-11-03 01:24:21,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43534 states. [2021-11-03 01:24:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43534 to 43532. [2021-11-03 01:24:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43532 states, 43529 states have (on average 1.3623101840152543) internal successors, (59300), 43531 states have internal predecessors, (59300), 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) [2021-11-03 01:24:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43532 states to 43532 states and 59300 transitions. [2021-11-03 01:24:22,036 INFO L78 Accepts]: Start accepts. Automaton has 43532 states and 59300 transitions. Word has length 30 [2021-11-03 01:24:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:24:22,037 INFO L470 AbstractCegarLoop]: Abstraction has 43532 states and 59300 transitions. [2021-11-03 01:24:22,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-03 01:24:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 43532 states and 59300 transitions. [2021-11-03 01:24:22,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 01:24:22,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:24:22,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 01:24:22,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 01:24:22,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 01:24:22,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:24:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1199983, now seen corresponding path program 1 times [2021-11-03 01:24:22,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:24:22,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898607349] [2021-11-03 01:24:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:24:22,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:24:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:24:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 01:24:22,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:24:22,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898607349] [2021-11-03 01:24:22,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898607349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:24:22,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:24:22,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:24:22,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449373734] [2021-11-03 01:24:22,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 01:24:22,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:24:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 01:24:22,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:24:22,185 INFO L87 Difference]: Start difference. First operand 43532 states and 59300 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 01:24:24,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:24:26,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:24:47,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:25:01,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:25:13,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:25:14,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:25:18,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:25:19,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:25:48,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:26:31,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:26:38,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:26:45,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:27:32,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:28:01,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:30:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:30:44,242 INFO L93 Difference]: Finished difference Result 97783 states and 133408 transitions. [2021-11-03 01:30:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 01:30:44,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 01:30:44,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:30:44,362 INFO L225 Difference]: With dead ends: 97783 [2021-11-03 01:30:44,362 INFO L226 Difference]: Without dead ends: 54295 [2021-11-03 01:30:44,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:30:44,434 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22218 mSDsluCounter, 29638 mSDsCounter, 0 mSdLazyCounter, 59391 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280643.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 259.45ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 59391 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377663.50ms IncrementalHoareTripleChecker+Time [2021-11-03 01:30:44,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22218 Valid, 0 Invalid, 59411 Unknown, 0 Unchecked, 259.45ms Time], IncrementalHoareTripleChecker [18 Valid, 59391 Invalid, 2 Unknown, 0 Unchecked, 377663.50ms Time] [2021-11-03 01:30:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54295 states. [2021-11-03 01:30:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54295 to 54275. [2021-11-03 01:30:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54275 states, 54272 states have (on average 1.3654739091981132) internal successors, (74107), 54274 states have internal predecessors, (74107), 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) [2021-11-03 01:30:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54275 states to 54275 states and 74107 transitions. [2021-11-03 01:30:45,561 INFO L78 Accepts]: Start accepts. Automaton has 54275 states and 74107 transitions. Word has length 52 [2021-11-03 01:30:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:30:45,562 INFO L470 AbstractCegarLoop]: Abstraction has 54275 states and 74107 transitions. [2021-11-03 01:30:45,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 01:30:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 54275 states and 74107 transitions. [2021-11-03 01:30:45,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 01:30:45,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:30:45,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 01:30:45,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 01:30:45,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 01:30:45,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:30:45,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1697863686, now seen corresponding path program 1 times [2021-11-03 01:30:45,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:30:45,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824427914] [2021-11-03 01:30:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:30:45,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:30:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:30:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 01:30:45,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:30:45,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824427914] [2021-11-03 01:30:45,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824427914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:30:45,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:30:45,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:30:45,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933174086] [2021-11-03 01:30:45,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 01:30:45,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:30:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 01:30:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:30:45,755 INFO L87 Difference]: Start difference. First operand 54275 states and 74107 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-03 01:30:47,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:31:57,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:32:19,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:32:20,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:33:22,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15