./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 173e3943 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-dev-173e394 [2021-11-06 20:59:21,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:59:21,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:59:21,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:59:21,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:59:21,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:59:21,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:59:21,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:59:21,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:59:21,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:59:21,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:59:21,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:59:21,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:59:21,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:59:21,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:59:21,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:59:21,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:59:21,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:59:21,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:59:21,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:59:21,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:59:21,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:59:21,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:59:21,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:59:21,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:59:21,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:59:21,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:59:21,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:59:21,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:59:21,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:59:21,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:59:21,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:59:21,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:59:21,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:59:21,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:59:21,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:59:21,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:59:21,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:59:21,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:59:21,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:59:21,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:59:21,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:59:21,535 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:59:21,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:59:21,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:59:21,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:59:21,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:59:21,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:59:21,537 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:59:21,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:59:21,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:59:21,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:59:21,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:59:21,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:59:21,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:59:21,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:59:21,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:59:21,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:59:21,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:59:21,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:59:21,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:59:21,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:59:21,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:59:21,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:59:21,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:59:21,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:59:21,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:59:21,540 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:59:21,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:59:21,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:59:21,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:59:21,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484c71f67ef44adda28419ba4f7367133d47a44b7b25589681c020e12726250b [2021-11-06 20:59:21,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:59:21,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:59:21,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:59:21,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:59:21,747 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:59:21,747 INFO L432 ainManager$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 [2021-11-06 20:59:21,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/568c3eca2/b3b276e3a65b465e9d572bc973ecd67d/FLAG5032e2d3b [2021-11-06 20:59:22,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:59:22,485 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 [2021-11-06 20:59:22,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/568c3eca2/b3b276e3a65b465e9d572bc973ecd67d/FLAG5032e2d3b [2021-11-06 20:59:22,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/568c3eca2/b3b276e3a65b465e9d572bc973ecd67d [2021-11-06 20:59:22,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:59:22,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:59:22,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:59:22,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:59:22,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:59:22,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:22" (1/1) ... [2021-11-06 20:59:22,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c61b5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:22, skipping insertion in model container [2021-11-06 20:59:22,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:22" (1/1) ... [2021-11-06 20:59:22,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:59:22,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:59:25,587 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] [2021-11-06 20:59:25,589 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] [2021-11-06 20:59:25,589 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] [2021-11-06 20:59:25,589 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] [2021-11-06 20:59:25,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:59:25,652 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:59:25,962 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] [2021-11-06 20:59:25,963 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] [2021-11-06 20:59:25,964 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] [2021-11-06 20:59:25,964 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] [2021-11-06 20:59:25,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:59:26,175 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:59:26,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26 WrapperNode [2021-11-06 20:59:26,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:59:26,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:59:26,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:59:26,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:59:26,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:26,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:31,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:59:31,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:59:31,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:59:31,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:59:31,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:31,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:32,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:32,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:33,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:34,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:34,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:35,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:59:35,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:59:35,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:59:35,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:59:35,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (1/1) ... [2021-11-06 20:59:35,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:59:35,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:59:35,091 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) [2021-11-06 20:59:35,099 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 [2021-11-06 20:59:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:59:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:59:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:59:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:59:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:59:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:59:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:59:35,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:59:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:59:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:59:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:59:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:59:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:59:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:59:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:59:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 21:05:02,511 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 21:05:02,512 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 21:05:02,512 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 21:05:02,513 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 21:05:02,519 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 21:05:02,520 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 21:05:02,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 21:05:02,599 INFO L299 CfgBuilder]: Removed 35063 assume(true) statements. [2021-11-06 21:05:02,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:05:02 BoogieIcfgContainer [2021-11-06 21:05:02,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 21:05:02,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 21:05:02,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 21:05:02,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 21:05:02,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:59:22" (1/3) ... [2021-11-06 21:05:02,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72996e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:05:02, skipping insertion in model container [2021-11-06 21:05:02,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:26" (2/3) ... [2021-11-06 21:05:02,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72996e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:05:02, skipping insertion in model container [2021-11-06 21:05:02,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:05:02" (3/3) ... [2021-11-06 21:05:02,629 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2021-11-06 21:05:02,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 21:05:02,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 21:05:02,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 21:05:02,731 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 [2021-11-06 21:05:02,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 21:05:03,018 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) [2021-11-06 21:05:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 21:05:03,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:05:03,032 INFO L513 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] [2021-11-06 21:05:03,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 21:05:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:05:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1428556317, now seen corresponding path program 1 times [2021-11-06 21:05:03,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:05:03,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417304287] [2021-11-06 21:05:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:05:03,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:05:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:05:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:05:04,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:05:04,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417304287] [2021-11-06 21:05:04,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417304287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:05:04,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:05:04,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:05:04,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384893740] [2021-11-06 21:05:04,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:05:04,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:05:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:05:04,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:05:04,174 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) [2021-11-06 21:05:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:05:08,006 INFO L93 Difference]: Finished difference Result 98428 states and 125463 transitions. [2021-11-06 21:05:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:05:08,007 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 [2021-11-06 21:05:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:05:08,225 INFO L225 Difference]: With dead ends: 98428 [2021-11-06 21:05:08,225 INFO L226 Difference]: Without dead ends: 64949 [2021-11-06 21:05:08,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:05:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64949 states. [2021-11-06 21:05:09,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64949 to 64947. [2021-11-06 21:05:09,657 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) [2021-11-06 21:05:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64947 states to 64947 states and 78594 transitions. [2021-11-06 21:05:09,880 INFO L78 Accepts]: Start accepts. Automaton has 64947 states and 78594 transitions. Word has length 63 [2021-11-06 21:05:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:05:09,882 INFO L470 AbstractCegarLoop]: Abstraction has 64947 states and 78594 transitions. [2021-11-06 21:05:09,882 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) [2021-11-06 21:05:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 64947 states and 78594 transitions. [2021-11-06 21:05:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 21:05:09,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:05:09,891 INFO L513 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] [2021-11-06 21:05:09,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 21:05:09,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 21:05:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:05:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash 488007885, now seen corresponding path program 1 times [2021-11-06 21:05:09,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:05:09,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745293875] [2021-11-06 21:05:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:05:09,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:05:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:05:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:05:10,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:05:10,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745293875] [2021-11-06 21:05:10,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745293875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:05:10,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:05:10,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:05:10,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042789715] [2021-11-06 21:05:10,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:05:10,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:05:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:05:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:05:10,548 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) [2021-11-06 21:05:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:05:14,532 INFO L93 Difference]: Finished difference Result 127218 states and 153894 transitions. [2021-11-06 21:05:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:05:14,532 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 [2021-11-06 21:05:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:05:14,695 INFO L225 Difference]: With dead ends: 127218 [2021-11-06 21:05:14,695 INFO L226 Difference]: Without dead ends: 62403 [2021-11-06 21:05:14,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:05:14,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62403 states. [2021-11-06 21:05:16,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62403 to 62385. [2021-11-06 21:05:16,120 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) [2021-11-06 21:05:16,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62385 states to 62385 states and 75399 transitions. [2021-11-06 21:05:16,225 INFO L78 Accepts]: Start accepts. Automaton has 62385 states and 75399 transitions. Word has length 83 [2021-11-06 21:05:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:05:16,228 INFO L470 AbstractCegarLoop]: Abstraction has 62385 states and 75399 transitions. [2021-11-06 21:05:16,229 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) [2021-11-06 21:05:16,229 INFO L276 IsEmpty]: Start isEmpty. Operand 62385 states and 75399 transitions. [2021-11-06 21:05:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 21:05:16,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:05:16,233 INFO L513 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] [2021-11-06 21:05:16,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 21:05:16,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 21:05:16,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:05:16,234 INFO L85 PathProgramCache]: Analyzing trace with hash 393373670, now seen corresponding path program 1 times [2021-11-06 21:05:16,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:05:16,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927076726] [2021-11-06 21:05:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:05:16,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:05:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:05:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 21:05:16,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:05:16,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927076726] [2021-11-06 21:05:16,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927076726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:05:16,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:05:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 21:05:16,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688876928] [2021-11-06 21:05:16,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:05:16,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:05:16,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:05:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:05:16,798 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) [2021-11-06 21:05:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:05:18,003 INFO L93 Difference]: Finished difference Result 62385 states and 75399 transitions. [2021-11-06 21:05:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:05:18,004 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 [2021-11-06 21:05:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:05:18,120 INFO L225 Difference]: With dead ends: 62385 [2021-11-06 21:05:18,120 INFO L226 Difference]: Without dead ends: 62367 [2021-11-06 21:05:18,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 21:05:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62367 states. [2021-11-06 21:05:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62367 to 47464. [2021-11-06 21:05:19,048 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) [2021-11-06 21:05:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47464 states to 47464 states and 57387 transitions. [2021-11-06 21:05:19,126 INFO L78 Accepts]: Start accepts. Automaton has 47464 states and 57387 transitions. Word has length 88 [2021-11-06 21:05:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:05:19,127 INFO L470 AbstractCegarLoop]: Abstraction has 47464 states and 57387 transitions. [2021-11-06 21:05:19,127 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) [2021-11-06 21:05:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 47464 states and 57387 transitions. [2021-11-06 21:05:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 21:05:19,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:05:19,132 INFO L513 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] [2021-11-06 21:05:19,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 21:05:19,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 21:05:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:05:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2015849977, now seen corresponding path program 1 times [2021-11-06 21:05:19,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:05:19,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980871074] [2021-11-06 21:05:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:05:19,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:05:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:05:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:05:19,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:05:19,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980871074] [2021-11-06 21:05:19,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980871074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:05:19,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:05:19,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:05:19,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175333950] [2021-11-06 21:05:19,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:05:19,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:05:19,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:05:19,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:05:19,732 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) [2021-11-06 21:05:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:05:23,575 INFO L93 Difference]: Finished difference Result 109720 states and 132656 transitions. [2021-11-06 21:05:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:05:23,577 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 [2021-11-06 21:05:23,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:05:23,690 INFO L225 Difference]: With dead ends: 109720 [2021-11-06 21:05:23,691 INFO L226 Difference]: Without dead ends: 62388 [2021-11-06 21:05:23,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:05:23,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62388 states. [2021-11-06 21:05:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62388 to 62384. [2021-11-06 21:05:24,939 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) [2021-11-06 21:05:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62384 states to 62384 states and 75398 transitions. [2021-11-06 21:05:25,214 INFO L78 Accepts]: Start accepts. Automaton has 62384 states and 75398 transitions. Word has length 111 [2021-11-06 21:05:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:05:25,215 INFO L470 AbstractCegarLoop]: Abstraction has 62384 states and 75398 transitions. [2021-11-06 21:05:25,215 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) [2021-11-06 21:05:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 62384 states and 75398 transitions. [2021-11-06 21:05:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 21:05:25,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:05:25,231 INFO L513 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] [2021-11-06 21:05:25,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 21:05:25,231 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 21:05:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:05:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2125629348, now seen corresponding path program 1 times [2021-11-06 21:05:25,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:05:25,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781509598] [2021-11-06 21:05:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:05:25,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:05:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:05:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 21:05:25,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:05:25,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781509598] [2021-11-06 21:05:25,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781509598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:05:25,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:05:25,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:05:25,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592761119] [2021-11-06 21:05:25,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:05:25,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:05:25,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:05:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:05:25,756 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) [2021-11-06 21:05:29,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:05:29,752 INFO L93 Difference]: Finished difference Result 139556 states and 168670 transitions. [2021-11-06 21:05:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:05:29,753 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 [2021-11-06 21:05:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:05:29,907 INFO L225 Difference]: With dead ends: 139556 [2021-11-06 21:05:29,908 INFO L226 Difference]: Without dead ends: 77304 [2021-11-06 21:05:29,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6