./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-ethernet-dec-tulip-tulip.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-usb-dev_drivers-net-ethernet-dec-tulip-tulip.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 b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:40:16,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:40:16,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:40:16,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:40:16,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:40:16,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:40:16,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:40:16,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:40:16,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:40:16,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:40:16,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:40:16,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:40:16,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:40:16,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:40:16,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:40:16,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:40:16,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:40:16,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:40:16,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:40:16,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:40:16,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:40:16,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:40:16,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:40:16,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:40:16,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:40:16,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:40:16,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:40:16,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:40:16,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:40:16,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:40:16,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:40:16,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:40:16,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:40:16,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:40:16,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:40:16,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:40:16,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:40:16,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:40:16,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:40:16,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:40:16,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:40:16,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:40:16,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:40:16,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:40:16,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:40:16,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:40:16,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:40:16,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:40:16,634 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:40:16,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:40:16,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:40:16,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:40:16,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:40:16,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:40:16,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:40:16,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:40:16,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:40:16,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:40:16,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:40:16,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:40:16,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:40:16,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:40:16,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:40:16,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:40:16,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:40:16,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:40:16,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:40:16,638 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:40:16,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:40:16,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:40:16,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:40:16,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 [2021-11-07 17:40:16,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:40:16,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:40:16,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:40:16,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:40:16,886 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:40:16,887 INFO L432 ainManager$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-ethernet-dec-tulip-tulip.cil.i [2021-11-07 17:40:16,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ddac4c7/deb4fbfe3c164124a861533a7c49e493/FLAG7985e7424 [2021-11-07 17:40:17,625 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:40:17,626 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-ethernet-dec-tulip-tulip.cil.i [2021-11-07 17:40:17,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ddac4c7/deb4fbfe3c164124a861533a7c49e493/FLAG7985e7424 [2021-11-07 17:40:17,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ddac4c7/deb4fbfe3c164124a861533a7c49e493 [2021-11-07 17:40:17,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:40:17,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:40:17,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:40:17,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:40:17,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:40:17,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:40:17" (1/1) ... [2021-11-07 17:40:17,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4cde40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:17, skipping insertion in model container [2021-11-07 17:40:17,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:40:17" (1/1) ... [2021-11-07 17:40:17,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:40:18,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:40:20,650 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-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2021-11-07 17:40:20,652 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-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2021-11-07 17:40:20,653 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-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2021-11-07 17:40:20,653 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-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2021-11-07 17:40:20,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:40:20,740 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:40:21,053 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-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2021-11-07 17:40:21,054 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-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2021-11-07 17:40:21,054 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-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2021-11-07 17:40:21,054 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-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2021-11-07 17:40:21,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:40:21,212 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:40:21,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21 WrapperNode [2021-11-07 17:40:21,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:40:21,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:40:21,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:40:21,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:40:21,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:21,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:23,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:40:23,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:40:23,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:40:23,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:40:23,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:23,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:23,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:23,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:24,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:24,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:24,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:25,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:40:25,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:40:25,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:40:25,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:40:25,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (1/1) ... [2021-11-07 17:40:25,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:40:25,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:40:25,157 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 17:40:25,173 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 17:40:25,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:40:25,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:40:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:40:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:40:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:40:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:40:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:40:25,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:40:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:40:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:40:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:40:25,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:40:25,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:40:25,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:40:25,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:43:17,563 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:43:17,563 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:43:17,563 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,563 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,563 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,564 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,564 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,564 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,564 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,564 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#9: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,564 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:43:17,565 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:43:17,566 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,567 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:43:17,568 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#10: ldv_switch_2_#res := 0; [2021-11-07 17:43:17,568 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:43:17,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:43:17,625 INFO L299 CfgBuilder]: Removed 16021 assume(true) statements. [2021-11-07 17:43:17,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:43:17 BoogieIcfgContainer [2021-11-07 17:43:17,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:43:17,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:43:17,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:43:17,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:43:17,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:40:17" (1/3) ... [2021-11-07 17:43:17,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f256854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:43:17, skipping insertion in model container [2021-11-07 17:43:17,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:40:21" (2/3) ... [2021-11-07 17:43:17,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f256854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:43:17, skipping insertion in model container [2021-11-07 17:43:17,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:43:17" (3/3) ... [2021-11-07 17:43:17,656 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-07 17:43:17,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:43:17,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 17:43:17,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:43:17,736 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 17:43:17,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 17:43:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 14905 states, 14901 states have (on average 1.35098315549292) internal successors, (20131), 14904 states have internal predecessors, (20131), 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 17:43:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 17:43:17,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:43:17,913 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] [2021-11-07 17:43:17,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:43:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:43:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash 461028898, now seen corresponding path program 1 times [2021-11-07 17:43:17,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:43:17,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527906999] [2021-11-07 17:43:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:43:17,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:43:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:43:18,855 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 17:43:18,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:43:18,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527906999] [2021-11-07 17:43:18,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527906999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:43:18,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:43:18,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:43:18,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678245728] [2021-11-07 17:43:18,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:43:18,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:43:18,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:43:18,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:43:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:18,921 INFO L87 Difference]: Start difference. First operand has 14905 states, 14901 states have (on average 1.35098315549292) internal successors, (20131), 14904 states have internal predecessors, (20131), 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 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 17:43:21,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:43:22,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:43:22,286 INFO L93 Difference]: Finished difference Result 44253 states and 59798 transitions. [2021-11-07 17:43:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:43:22,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-07 17:43:22,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:43:22,437 INFO L225 Difference]: With dead ends: 44253 [2021-11-07 17:43:22,437 INFO L226 Difference]: Without dead ends: 29066 [2021-11-07 17:43:22,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:22,479 INFO L933 BasicCegarLoop]: 19983 mSDtfsCounter, 19737 mSDsluCounter, 19935 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2313.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19737 SdHoareTripleChecker+Valid, 39918 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.27ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2455.43ms IncrementalHoareTripleChecker+Time [2021-11-07 17:43:22,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19737 Valid, 39918 Invalid, 34 Unknown, 0 Unchecked, 70.27ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2455.43ms Time] [2021-11-07 17:43:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29066 states. [2021-11-07 17:43:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29066 to 29064. [2021-11-07 17:43:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29064 states, 29060 states have (on average 1.3374053682037164) internal successors, (38865), 29063 states have internal predecessors, (38865), 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 17:43:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29064 states to 29064 states and 38865 transitions. [2021-11-07 17:43:23,322 INFO L78 Accepts]: Start accepts. Automaton has 29064 states and 38865 transitions. Word has length 57 [2021-11-07 17:43:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:43:23,324 INFO L470 AbstractCegarLoop]: Abstraction has 29064 states and 38865 transitions. [2021-11-07 17:43:23,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 17:43:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 29064 states and 38865 transitions. [2021-11-07 17:43:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 17:43:23,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:43:23,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:43:23,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:43:23,342 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:43:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:43:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash 656236002, now seen corresponding path program 1 times [2021-11-07 17:43:23,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:43:23,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541160426] [2021-11-07 17:43:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:43:23,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:43:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:43:23,873 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 17:43:23,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:43:23,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541160426] [2021-11-07 17:43:23,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541160426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:43:23,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:43:23,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:43:23,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707587690] [2021-11-07 17:43:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:43:23,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:43:23,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:43:23,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:43:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:23,876 INFO L87 Difference]: Start difference. First operand 29064 states and 38865 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:43:26,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:43:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:43:27,274 INFO L93 Difference]: Finished difference Result 54695 states and 73172 transitions. [2021-11-07 17:43:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:43:27,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 17:43:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:43:27,333 INFO L225 Difference]: With dead ends: 54695 [2021-11-07 17:43:27,333 INFO L226 Difference]: Without dead ends: 25739 [2021-11-07 17:43:27,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:27,376 INFO L933 BasicCegarLoop]: 19510 mSDtfsCounter, 7450 mSDsluCounter, 19464 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2697.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7450 SdHoareTripleChecker+Valid, 38974 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.83ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2890.76ms IncrementalHoareTripleChecker+Time [2021-11-07 17:43:27,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7450 Valid, 38974 Invalid, 100 Unknown, 0 Unchecked, 25.83ms Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2890.76ms Time] [2021-11-07 17:43:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25739 states. [2021-11-07 17:43:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25739 to 25717. [2021-11-07 17:43:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25717 states, 25713 states have (on average 1.3368723991755143) internal successors, (34375), 25716 states have internal predecessors, (34375), 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 17:43:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25717 states to 25717 states and 34375 transitions. [2021-11-07 17:43:28,003 INFO L78 Accepts]: Start accepts. Automaton has 25717 states and 34375 transitions. Word has length 73 [2021-11-07 17:43:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:43:28,003 INFO L470 AbstractCegarLoop]: Abstraction has 25717 states and 34375 transitions. [2021-11-07 17:43:28,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:43:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 25717 states and 34375 transitions. [2021-11-07 17:43:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 17:43:28,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:43:28,012 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] [2021-11-07 17:43:28,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:43:28,012 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:43:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:43:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash -179454734, now seen corresponding path program 1 times [2021-11-07 17:43:28,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:43:28,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877215478] [2021-11-07 17:43:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:43:28,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:43:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:43:28,573 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 17:43:28,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:43:28,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877215478] [2021-11-07 17:43:28,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877215478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:43:28,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:43:28,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:43:28,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050474875] [2021-11-07 17:43:28,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:43:28,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:43:28,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:43:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:43:28,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:28,575 INFO L87 Difference]: Start difference. First operand 25717 states and 34375 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 17:43:30,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:43:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:43:31,513 INFO L93 Difference]: Finished difference Result 65766 states and 87969 transitions. [2021-11-07 17:43:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:43:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2021-11-07 17:43:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:43:31,632 INFO L225 Difference]: With dead ends: 65766 [2021-11-07 17:43:31,632 INFO L226 Difference]: Without dead ends: 45685 [2021-11-07 17:43:31,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:31,695 INFO L933 BasicCegarLoop]: 26921 mSDtfsCounter, 19332 mSDsluCounter, 19506 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2264.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19332 SdHoareTripleChecker+Valid, 46427 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.92ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2346.36ms IncrementalHoareTripleChecker+Time [2021-11-07 17:43:31,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19332 Valid, 46427 Invalid, 30 Unknown, 0 Unchecked, 30.92ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2346.36ms Time] [2021-11-07 17:43:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45685 states. [2021-11-07 17:43:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45685 to 45683. [2021-11-07 17:43:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45683 states, 45679 states have (on average 1.3376168480045536) internal successors, (61101), 45682 states have internal predecessors, (61101), 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 17:43:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45683 states to 45683 states and 61101 transitions. [2021-11-07 17:43:32,890 INFO L78 Accepts]: Start accepts. Automaton has 45683 states and 61101 transitions. Word has length 86 [2021-11-07 17:43:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:43:32,890 INFO L470 AbstractCegarLoop]: Abstraction has 45683 states and 61101 transitions. [2021-11-07 17:43:32,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 17:43:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 45683 states and 61101 transitions. [2021-11-07 17:43:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 17:43:32,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:43:32,899 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] [2021-11-07 17:43:32,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:43:32,900 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:43:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:43:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1459318412, now seen corresponding path program 1 times [2021-11-07 17:43:32,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:43:32,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712968918] [2021-11-07 17:43:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:43:32,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:43:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:43:33,470 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 17:43:33,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:43:33,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712968918] [2021-11-07 17:43:33,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712968918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:43:33,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:43:33,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:43:33,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42616716] [2021-11-07 17:43:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:43:33,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:43:33,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:43:33,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:43:33,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:33,472 INFO L87 Difference]: Start difference. First operand 45683 states and 61101 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 17:43:35,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:43:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:43:36,705 INFO L93 Difference]: Finished difference Result 105700 states and 141425 transitions. [2021-11-07 17:43:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:43:36,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2021-11-07 17:43:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:43:36,820 INFO L225 Difference]: With dead ends: 105700 [2021-11-07 17:43:36,820 INFO L226 Difference]: Without dead ends: 65653 [2021-11-07 17:43:36,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:36,878 INFO L933 BasicCegarLoop]: 38858 mSDtfsCounter, 19334 mSDsluCounter, 19505 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2259.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19334 SdHoareTripleChecker+Valid, 58363 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.94ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2364.64ms IncrementalHoareTripleChecker+Time [2021-11-07 17:43:36,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19334 Valid, 58363 Invalid, 32 Unknown, 0 Unchecked, 31.94ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2364.64ms Time] [2021-11-07 17:43:36,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65653 states. [2021-11-07 17:43:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65653 to 65644. [2021-11-07 17:43:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65644 states, 65640 states have (on average 1.3379341864716636) internal successors, (87822), 65643 states have internal predecessors, (87822), 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 17:43:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65644 states to 65644 states and 87822 transitions. [2021-11-07 17:43:38,156 INFO L78 Accepts]: Start accepts. Automaton has 65644 states and 87822 transitions. Word has length 86 [2021-11-07 17:43:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:43:38,156 INFO L470 AbstractCegarLoop]: Abstraction has 65644 states and 87822 transitions. [2021-11-07 17:43:38,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 17:43:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 65644 states and 87822 transitions. [2021-11-07 17:43:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 17:43:38,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:43:38,166 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:43:38,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:43:38,166 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:43:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:43:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash -782100417, now seen corresponding path program 1 times [2021-11-07 17:43:38,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:43:38,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068052936] [2021-11-07 17:43:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:43:38,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:43:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:43:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:43:38,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:43:38,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068052936] [2021-11-07 17:43:38,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068052936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:43:38,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:43:38,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:43:38,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821445458] [2021-11-07 17:43:38,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:43:38,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:43:38,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:43:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:43:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:43:38,819 INFO L87 Difference]: Start difference. First operand 65644 states and 87822 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:43:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:43:39,952 INFO L93 Difference]: Finished difference Result 65644 states and 87822 transitions. [2021-11-07 17:43:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:43:39,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 17:43:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:43:40,066 INFO L225 Difference]: With dead ends: 65644 [2021-11-07 17:43:40,067 INFO L226 Difference]: Without dead ends: 60088 [2021-11-07 17:43:40,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 118.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:43:40,100 INFO L933 BasicCegarLoop]: 19522 mSDtfsCounter, 19451 mSDsluCounter, 19522 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19451 SdHoareTripleChecker+Valid, 39044 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.91ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 159.00ms IncrementalHoareTripleChecker+Time [2021-11-07 17:43:40,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19451 Valid, 39044 Invalid, 10 Unknown, 0 Unchecked, 40.91ms Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 159.00ms Time] [2021-11-07 17:43:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60088 states. [2021-11-07 17:43:41,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60088 to 60088. [2021-11-07 17:43:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60088 states, 60087 states have (on average 1.337893387920848) internal successors, (80390), 60087 states have internal predecessors, (80390), 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 17:43:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60088 states to 60088 states and 80390 transitions. [2021-11-07 17:43:41,394 INFO L78 Accepts]: Start accepts. Automaton has 60088 states and 80390 transitions. Word has length 87 [2021-11-07 17:43:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:43:41,394 INFO L470 AbstractCegarLoop]: Abstraction has 60088 states and 80390 transitions. [2021-11-07 17:43:41,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:43:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 60088 states and 80390 transitions. [2021-11-07 17:43:41,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 17:43:41,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:43:41,420 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:43:41,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:43:41,421 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:43:41,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:43:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash 514365731, now seen corresponding path program 1 times [2021-11-07 17:43:41,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:43:41,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579791362] [2021-11-07 17:43:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:43:41,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:43:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:43:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:43:41,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:43:41,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579791362] [2021-11-07 17:43:41,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579791362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:43:41,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:43:41,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:43:41,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396084712] [2021-11-07 17:43:41,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:43:41,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:43:41,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:43:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:43:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:41,867 INFO L87 Difference]: Start difference. First operand 60088 states and 80390 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 17:43:43,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:43:46,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:43:46,063 INFO L93 Difference]: Finished difference Result 131154 states and 175533 transitions. [2021-11-07 17:43:46,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:43:46,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-07 17:43:46,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:43:46,195 INFO L225 Difference]: With dead ends: 131154 [2021-11-07 17:43:46,195 INFO L226 Difference]: Without dead ends: 76702 [2021-11-07 17:43:46,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:46,285 INFO L933 BasicCegarLoop]: 26933 mSDtfsCounter, 7429 mSDsluCounter, 19435 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2756.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7429 SdHoareTripleChecker+Valid, 46368 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.85ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2880.67ms IncrementalHoareTripleChecker+Time [2021-11-07 17:43:46,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7429 Valid, 46368 Invalid, 86 Unknown, 0 Unchecked, 27.85ms Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2880.67ms Time] [2021-11-07 17:43:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76702 states. [2021-11-07 17:43:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76702 to 76698. [2021-11-07 17:43:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76698 states, 76697 states have (on average 1.3379010913073524) internal successors, (102613), 76697 states have internal predecessors, (102613), 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 17:43:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76698 states to 76698 states and 102613 transitions. [2021-11-07 17:43:48,052 INFO L78 Accepts]: Start accepts. Automaton has 76698 states and 102613 transitions. Word has length 105 [2021-11-07 17:43:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:43:48,052 INFO L470 AbstractCegarLoop]: Abstraction has 76698 states and 102613 transitions. [2021-11-07 17:43:48,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 17:43:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 76698 states and 102613 transitions. [2021-11-07 17:43:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 17:43:48,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:43:48,104 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:48,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 17:43:48,105 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:43:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:43:48,105 INFO L85 PathProgramCache]: Analyzing trace with hash 435860946, now seen corresponding path program 1 times [2021-11-07 17:43:48,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:43:48,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305146473] [2021-11-07 17:43:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:43:48,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:43:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:43:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 17:43:48,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:43:48,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305146473] [2021-11-07 17:43:48,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305146473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:43:48,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:43:48,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:43:48,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899049308] [2021-11-07 17:43:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:43:48,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:43:48,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:43:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:43:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:43:48,478 INFO L87 Difference]: Start difference. First operand 76698 states and 102613 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 17:43:50,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []