./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.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 484c71f67ef44adda28419ba4f7367133d47a44b7b25589681c020e12726250b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:31:40,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:31:40,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:31:40,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:31:40,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:31:40,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:31:40,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:31:40,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:31:40,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:31:40,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:31:40,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:31:40,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:31:40,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:31:40,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:31:40,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:31:40,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:31:40,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:31:40,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:31:40,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:31:40,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:31:40,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:31:40,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:31:40,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:31:40,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:31:40,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:31:40,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:31:40,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:31:40,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:31:40,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:31:40,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:31:40,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:31:40,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:31:40,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:31:40,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:31:40,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:31:40,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:31:40,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:31:40,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:31:40,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:31:40,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:31:40,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:31:40,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:31:40,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:31:40,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:31:40,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:31:40,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:31:40,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:31:40,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:31:40,651 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:31:40,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:31:40,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:31:40,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:31:40,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:31:40,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:31:40,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:31:40,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:31:40,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:31:40,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:31:40,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:31:40,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:31:40,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:31:40,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:31:40,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:31:40,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:31:40,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:31:40,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:31:40,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:31:40,656 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:31:40,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:31:40,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:31:40,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:31:40,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484c71f67ef44adda28419ba4f7367133d47a44b7b25589681c020e12726250b [2021-11-07 19:31:40,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:31:40,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:31:40,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:31:40,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:31:40,904 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:31:40,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-07 19:31:40,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac3ed311c/886147de749a4f02b129df814b723239/FLAG115fab165 [2021-11-07 19:31:41,775 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:31:41,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-07 19:31:41,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac3ed311c/886147de749a4f02b129df814b723239/FLAG115fab165 [2021-11-07 19:31:42,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac3ed311c/886147de749a4f02b129df814b723239 [2021-11-07 19:31:42,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:31:42,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:31:42,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:31:42,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:31:42,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:31:42,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:31:42" (1/1) ... [2021-11-07 19:31:42,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331251c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:42, skipping insertion in model container [2021-11-07 19:31:42,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:31:42" (1/1) ... [2021-11-07 19:31:42,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:31:42,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:31:45,298 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486836,486849] [2021-11-07 19:31:45,302 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486983,486996] [2021-11-07 19:31:45,302 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487122,487135] [2021-11-07 19:31:45,303 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487280,487293] [2021-11-07 19:31:45,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:31:45,410 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:31:45,775 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486836,486849] [2021-11-07 19:31:45,776 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486983,486996] [2021-11-07 19:31:45,776 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487122,487135] [2021-11-07 19:31:45,776 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487280,487293] [2021-11-07 19:31:45,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:31:46,046 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:31:46,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46 WrapperNode [2021-11-07 19:31:46,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:31:46,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:31:46,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:31:46,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:31:46,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:46,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:52,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:31:52,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:31:52,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:31:52,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:31:52,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:52,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:53,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:53,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:55,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:56,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:56,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:57,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:31:57,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:31:57,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:31:57,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:31:57,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (1/1) ... [2021-11-07 19:31:57,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:31:57,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:31:57,083 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 19:31:57,086 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 19:31:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:31:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:31:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:31:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:31:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:31:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:31:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:31:57,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:31:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:31:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:31:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:31:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:31:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:31:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:31:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:31:57,114 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 19:37:50,058 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:37:50,059 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:37:50,059 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:37:50,060 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:37:50,068 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:37:50,070 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:37:50,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:37:50,193 INFO L299 CfgBuilder]: Removed 35063 assume(true) statements. [2021-11-07 19:37:50,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:37:50 BoogieIcfgContainer [2021-11-07 19:37:50,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:37:50,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:37:50,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:37:50,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:37:50,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:31:42" (1/3) ... [2021-11-07 19:37:50,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3fcbae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:37:50, skipping insertion in model container [2021-11-07 19:37:50,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:46" (2/3) ... [2021-11-07 19:37:50,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3fcbae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:37:50, skipping insertion in model container [2021-11-07 19:37:50,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:37:50" (3/3) ... [2021-11-07 19:37:50,237 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-07 19:37:50,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:37:50,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 19:37:50,364 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:37:50,372 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 19:37:50,372 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 19:37:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 32936 states, 32933 states have (on average 1.27483071691009) internal successors, (41984), 32935 states have internal predecessors, (41984), 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 19:37:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 19:37:50,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:37:50,899 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] [2021-11-07 19:37:50,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 19:37:50,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:37:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1428556317, now seen corresponding path program 1 times [2021-11-07 19:37:50,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:37:50,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332359438] [2021-11-07 19:37:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:37:50,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:37:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:37:52,083 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 19:37:52,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:37:52,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332359438] [2021-11-07 19:37:52,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332359438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:37:52,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:37:52,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:37:52,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458134629] [2021-11-07 19:37:52,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:37:52,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:37:52,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:37:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:37:52,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:37:52,187 INFO L87 Difference]: Start difference. First operand has 32936 states, 32933 states have (on average 1.27483071691009) internal successors, (41984), 32935 states have internal predecessors, (41984), 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 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:37:54,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:37:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:37:56,737 INFO L93 Difference]: Finished difference Result 98428 states and 125463 transitions. [2021-11-07 19:37:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:37:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-07 19:37:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:37:57,034 INFO L225 Difference]: With dead ends: 98428 [2021-11-07 19:37:57,034 INFO L226 Difference]: Without dead ends: 64949 [2021-11-07 19:37:57,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:37:57,142 INFO L933 BasicCegarLoop]: 40027 mSDtfsCounter, 39782 mSDsluCounter, 39988 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2248.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39782 SdHoareTripleChecker+Valid, 80015 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 424.52ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2394.40ms IncrementalHoareTripleChecker+Time [2021-11-07 19:37:57,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39782 Valid, 80015 Invalid, 14 Unknown, 0 Unchecked, 424.52ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2394.40ms Time] [2021-11-07 19:37:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64949 states. [2021-11-07 19:37:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64949 to 64947. [2021-11-07 19:37:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64947 states, 64944 states have (on average 1.2101810790835181) internal successors, (78594), 64946 states have internal predecessors, (78594), 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 19:37:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64947 states to 64947 states and 78594 transitions. [2021-11-07 19:37:59,437 INFO L78 Accepts]: Start accepts. Automaton has 64947 states and 78594 transitions. Word has length 63 [2021-11-07 19:37:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:37:59,439 INFO L470 AbstractCegarLoop]: Abstraction has 64947 states and 78594 transitions. [2021-11-07 19:37:59,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:37:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand 64947 states and 78594 transitions. [2021-11-07 19:37:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 19:37:59,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:37:59,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:37:59,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:37:59,451 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 19:37:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:37:59,454 INFO L85 PathProgramCache]: Analyzing trace with hash 488007885, now seen corresponding path program 1 times [2021-11-07 19:37:59,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:37:59,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123556170] [2021-11-07 19:37:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:37:59,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:37:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:38:00,094 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 19:38:00,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:38:00,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123556170] [2021-11-07 19:38:00,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123556170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:38:00,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:38:00,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:38:00,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346673308] [2021-11-07 19:38:00,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:38:00,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:38:00,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:38:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:38:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:38:00,097 INFO L87 Difference]: Start difference. First operand 64947 states and 78594 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:38:02,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:38:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:38:05,060 INFO L93 Difference]: Finished difference Result 127218 states and 153894 transitions. [2021-11-07 19:38:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:38:05,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-07 19:38:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:38:05,288 INFO L225 Difference]: With dead ends: 127218 [2021-11-07 19:38:05,288 INFO L226 Difference]: Without dead ends: 62403 [2021-11-07 19:38:05,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:38:05,426 INFO L933 BasicCegarLoop]: 39373 mSDtfsCounter, 18012 mSDsluCounter, 39325 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2800.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18012 SdHoareTripleChecker+Valid, 78698 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.21ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2975.29ms IncrementalHoareTripleChecker+Time [2021-11-07 19:38:05,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18012 Valid, 78698 Invalid, 100 Unknown, 0 Unchecked, 89.21ms Time], IncrementalHoareTripleChecker [19 Valid, 80 Invalid, 1 Unknown, 0 Unchecked, 2975.29ms Time] [2021-11-07 19:38:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62403 states. [2021-11-07 19:38:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62403 to 62385. [2021-11-07 19:38:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62385 states, 62382 states have (on average 1.2086659613350004) internal successors, (75399), 62384 states have internal predecessors, (75399), 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 19:38:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62385 states to 62385 states and 75399 transitions. [2021-11-07 19:38:07,094 INFO L78 Accepts]: Start accepts. Automaton has 62385 states and 75399 transitions. Word has length 83 [2021-11-07 19:38:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:38:07,095 INFO L470 AbstractCegarLoop]: Abstraction has 62385 states and 75399 transitions. [2021-11-07 19:38:07,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:38:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 62385 states and 75399 transitions. [2021-11-07 19:38:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 19:38:07,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:38:07,098 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, 1, 1, 1, 1, 1, 1, 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 19:38:07,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:38:07,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 19:38:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:38:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 393373670, now seen corresponding path program 1 times [2021-11-07 19:38:07,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:38:07,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074483313] [2021-11-07 19:38:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:38:07,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:38:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:38:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 19:38:08,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:38:08,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074483313] [2021-11-07 19:38:08,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074483313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:38:08,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:38:08,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 19:38:08,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725777390] [2021-11-07 19:38:08,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:38:08,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:38:08,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:38:08,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:38:08,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:38:08,034 INFO L87 Difference]: Start difference. First operand 62385 states and 75399 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 19:38:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:38:09,341 INFO L93 Difference]: Finished difference Result 62385 states and 75399 transitions. [2021-11-07 19:38:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:38:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 88 [2021-11-07 19:38:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:38:09,476 INFO L225 Difference]: With dead ends: 62385 [2021-11-07 19:38:09,477 INFO L226 Difference]: Without dead ends: 62367 [2021-11-07 19:38:09,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 135.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:38:09,506 INFO L933 BasicCegarLoop]: 39386 mSDtfsCounter, 39309 mSDsluCounter, 39386 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39309 SdHoareTripleChecker+Valid, 78772 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 83.00ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.25ms IncrementalHoareTripleChecker+Time [2021-11-07 19:38:09,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39309 Valid, 78772 Invalid, 7 Unknown, 0 Unchecked, 83.00ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 193.25ms Time] [2021-11-07 19:38:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62367 states. [2021-11-07 19:38:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62367 to 47464. [2021-11-07 19:38:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47464 states, 47463 states have (on average 1.2090891852600973) internal successors, (57387), 47463 states have internal predecessors, (57387), 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 19:38:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47464 states to 47464 states and 57387 transitions. [2021-11-07 19:38:10,840 INFO L78 Accepts]: Start accepts. Automaton has 47464 states and 57387 transitions. Word has length 88 [2021-11-07 19:38:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:38:10,841 INFO L470 AbstractCegarLoop]: Abstraction has 47464 states and 57387 transitions. [2021-11-07 19:38:10,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 19:38:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 47464 states and 57387 transitions. [2021-11-07 19:38:10,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 19:38:10,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:38:10,848 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, 1, 1, 1, 1, 1, 1] [2021-11-07 19:38:10,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:38:10,849 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 19:38:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:38:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2015849977, now seen corresponding path program 1 times [2021-11-07 19:38:10,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:38:10,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324807947] [2021-11-07 19:38:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:38:10,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:38:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:38:11,703 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 19:38:11,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:38:11,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324807947] [2021-11-07 19:38:11,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324807947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:38:11,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:38:11,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:38:11,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939928743] [2021-11-07 19:38:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:38:11,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:38:11,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:38:11,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:38:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:38:11,706 INFO L87 Difference]: Start difference. First operand 47464 states and 57387 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 19:38:13,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:38:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:38:15,472 INFO L93 Difference]: Finished difference Result 109720 states and 132656 transitions. [2021-11-07 19:38:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:38:15,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2021-11-07 19:38:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:38:15,598 INFO L225 Difference]: With dead ends: 109720 [2021-11-07 19:38:15,598 INFO L226 Difference]: Without dead ends: 62388 [2021-11-07 19:38:15,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:38:15,692 INFO L933 BasicCegarLoop]: 57372 mSDtfsCounter, 17998 mSDsluCounter, 39298 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2663.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17998 SdHoareTripleChecker+Valid, 96670 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.56ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2776.14ms IncrementalHoareTripleChecker+Time [2021-11-07 19:38:15,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17998 Valid, 96670 Invalid, 92 Unknown, 0 Unchecked, 45.56ms Time], IncrementalHoareTripleChecker [15 Valid, 76 Invalid, 1 Unknown, 0 Unchecked, 2776.14ms Time] [2021-11-07 19:38:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62388 states. [2021-11-07 19:38:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62388 to 62384. [2021-11-07 19:38:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62384 states, 62383 states have (on average 1.2086305564015838) internal successors, (75398), 62383 states have internal predecessors, (75398), 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 19:38:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62384 states to 62384 states and 75398 transitions. [2021-11-07 19:38:17,241 INFO L78 Accepts]: Start accepts. Automaton has 62384 states and 75398 transitions. Word has length 111 [2021-11-07 19:38:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:38:17,241 INFO L470 AbstractCegarLoop]: Abstraction has 62384 states and 75398 transitions. [2021-11-07 19:38:17,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 19:38:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 62384 states and 75398 transitions. [2021-11-07 19:38:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 19:38:17,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:38:17,258 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, 1, 1, 1, 1, 1, 1] [2021-11-07 19:38:17,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:38:17,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 19:38:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:38:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2125629348, now seen corresponding path program 1 times [2021-11-07 19:38:17,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:38:17,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450062301] [2021-11-07 19:38:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:38:17,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:38:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:38:18,154 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 19:38:18,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:38:18,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450062301] [2021-11-07 19:38:18,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450062301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:38:18,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:38:18,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:38:18,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794284254] [2021-11-07 19:38:18,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:38:18,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:38:18,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:38:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:38:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:38:18,156 INFO L87 Difference]: Start difference. First operand 62384 states and 75398 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 19:38:20,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:38:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:38:22,357 INFO L93 Difference]: Finished difference Result 139556 states and 168670 transitions. [2021-11-07 19:38:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:38:22,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 148 [2021-11-07 19:38:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:38:22,489 INFO L225 Difference]: With dead ends: 139556 [2021-11-07 19:38:22,490 INFO L226 Difference]: Without dead ends: 77304 [2021-11-07 19:38:22,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:38:22,557 INFO L933 BasicCegarLoop]: 57372 mSDtfsCounter, 17995 mSDsluCounter, 39311 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2646.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17995 SdHoareTripleChecker+Valid, 96683 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.53ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2751.90ms IncrementalHoareTripleChecker+Time [2021-11-07 19:38:22,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17995 Valid, 96683 Invalid, 85 Unknown, 0 Unchecked, 51.53ms Time], IncrementalHoareTripleChecker [13 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 2751.90ms Time] [2021-11-07 19:38:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77304 states. [2021-11-07 19:38:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77304 to 77300. [2021-11-07 19:38:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77300 states, 77299 states have (on average 1.2083597459216808) internal successors, (93405), 77299 states have internal predecessors, (93405), 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 19:38:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77300 states to 77300 states and 93405 transitions. [2021-11-07 19:38:24,241 INFO L78 Accepts]: Start accepts. Automaton has 77300 states and 93405 transitions. Word has length 148 [2021-11-07 19:38:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:38:24,241 INFO L470 AbstractCegarLoop]: Abstraction has 77300 states and 93405 transitions. [2021-11-07 19:38:24,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 19:38:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 77300 states and 93405 transitions. [2021-11-07 19:38:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 19:38:24,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:38:24,258 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, 1, 1, 1, 1, 1, 1] [2021-11-07 19:38:24,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 19:38:24,258 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 19:38:24,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:38:24,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1850869734, now seen corresponding path program 1 times [2021-11-07 19:38:24,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:38:24,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621287338] [2021-11-07 19:38:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:38:24,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:38:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:38:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 19:38:25,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:38:25,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621287338] [2021-11-07 19:38:25,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621287338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:38:25,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:38:25,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 19:38:25,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890566461] [2021-11-07 19:38:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:38:25,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:38:25,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:38:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:38:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:38:25,109 INFO L87 Difference]: Start difference. First operand 77300 states and 93405 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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)