./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.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 05e3ebea4820703b3259b4b6dd440513670562ea5166f99f8e3aabd0be2e3f32 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 03:58:15,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:58:15,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:58:15,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:58:15,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:58:15,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:58:15,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:58:15,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:58:15,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:58:15,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:58:15,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:58:15,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:58:15,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:58:15,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:58:15,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:58:15,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:58:15,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:58:15,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:58:15,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:58:15,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:58:15,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:58:15,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:58:15,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:58:15,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:58:15,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:58:15,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:58:15,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:58:15,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:58:15,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:58:15,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:58:15,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:58:15,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:58:15,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:58:15,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:58:15,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:58:15,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:58:15,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:58:15,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:58:15,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:58:15,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:58:15,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:58:15,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 03:58:15,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:58:15,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:58:15,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:58:15,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:58:15,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:58:15,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:58:15,680 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 03:58:15,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:58:15,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:58:15,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:58:15,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:58:15,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:58:15,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:58:15,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:58:15,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:58:15,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:58:15,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:58:15,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:58:15,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:58:15,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:58:15,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:58:15,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:58:15,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:58:15,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 03:58:15,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:58:15,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 03:58:15,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 03:58:15,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:58:15,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:58:15,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05e3ebea4820703b3259b4b6dd440513670562ea5166f99f8e3aabd0be2e3f32 [2021-11-23 03:58:15,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:58:15,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:58:15,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:58:15,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:58:15,960 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:58:15,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-23 03:58:16,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315879406/c6d0d18838dd487087ade9566a324a0f/FLAGbb410b376 [2021-11-23 03:58:16,883 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:58:16,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-23 03:58:16,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315879406/c6d0d18838dd487087ade9566a324a0f/FLAGbb410b376 [2021-11-23 03:58:17,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/315879406/c6d0d18838dd487087ade9566a324a0f [2021-11-23 03:58:17,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:58:17,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:58:17,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:58:17,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:58:17,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:58:17,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:17" (1/1) ... [2021-11-23 03:58:17,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f24010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:17, skipping insertion in model container [2021-11-23 03:58:17,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:17" (1/1) ... [2021-11-23 03:58:17,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:58:17,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:58:21,162 WARN L230 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460236,460249] [2021-11-23 03:58:21,165 WARN L230 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460405,460418] [2021-11-23 03:58:21,171 WARN L230 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460572,460585] [2021-11-23 03:58:21,172 WARN L230 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460740,460753] [2021-11-23 03:58:21,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:58:21,307 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:58:21,641 WARN L230 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460236,460249] [2021-11-23 03:58:21,643 WARN L230 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460405,460418] [2021-11-23 03:58:21,643 WARN L230 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460572,460585] [2021-11-23 03:58:21,643 WARN L230 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-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i[460740,460753] [2021-11-23 03:58:21,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:58:21,934 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:58:21,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21 WrapperNode [2021-11-23 03:58:21,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:58:21,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:58:21,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:58:21,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:58:21,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:22,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:29,638 INFO L137 Inliner]: procedures = 676, calls = 4362, calls flagged for inlining = 1471, calls inlined = 43761, statements flattened = 372883 [2021-11-23 03:58:29,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:58:29,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:58:29,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:58:29,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:58:29,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:29,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:31,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:31,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:35,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:36,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:36,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:38,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:58:38,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:58:38,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:58:38,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:58:38,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (1/1) ... [2021-11-23 03:58:38,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:58:38,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 03:58:38,129 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) [2021-11-23 03:58:38,147 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 [2021-11-23 03:58:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:58:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2021-11-23 03:58:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:58:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:58:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:58:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:58:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:58:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:58:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:58:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:58:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:58:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:58:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:58:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 03:58:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:58:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:58:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:58:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:58:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:58:40,156 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:58:40,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 04:00:09,592 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#1: ldv_switch_2_#res#1 := 0; [2021-11-23 04:00:09,592 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res#1 := 0; [2021-11-23 04:00:09,592 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res#1 := 0; [2021-11-23 04:00:09,592 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res#1 := 0; [2021-11-23 04:00:09,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#1: ldv_switch_4_#res#1 := 0; [2021-11-23 04:00:09,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res#1 := 0; [2021-11-23 04:00:09,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 04:00:09,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 04:00:09,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-23 04:00:09,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 04:00:09,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#1: ldv_switch_3_#res#1 := 0; [2021-11-23 04:00:09,603 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 04:00:09,628 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 04:00:09,802 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 04:00:09,802 INFO L301 CfgBuilder]: Removed 270 assume(true) statements. [2021-11-23 04:00:09,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:09 BoogieIcfgContainer [2021-11-23 04:00:09,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 04:00:09,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 04:00:09,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 04:00:09,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 04:00:09,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:58:17" (1/3) ... [2021-11-23 04:00:09,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa88368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:00:09, skipping insertion in model container [2021-11-23 04:00:09,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:21" (2/3) ... [2021-11-23 04:00:09,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa88368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:00:09, skipping insertion in model container [2021-11-23 04:00:09,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:09" (3/3) ... [2021-11-23 04:00:09,863 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-23 04:00:09,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 04:00:09,868 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1281 error locations. [2021-11-23 04:00:10,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 04:00:10,243 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 [2021-11-23 04:00:10,243 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1281 error locations. [2021-11-23 04:00:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 73604 states, 72323 states have (on average 1.2573316925459397) internal successors, (90934), 73603 states have internal predecessors, (90934), 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) [2021-11-23 04:00:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 04:00:11,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:11,003 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] [2021-11-23 04:00:11,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1278 more)] === [2021-11-23 04:00:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash -590043920, now seen corresponding path program 1 times [2021-11-23 04:00:11,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 04:00:11,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182548656] [2021-11-23 04:00:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:11,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:11,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 04:00:11,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182548656] [2021-11-23 04:00:11,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182548656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:11,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:11,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 04:00:11,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569722383] [2021-11-23 04:00:11,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:11,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 04:00:11,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 04:00:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 04:00:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:00:11,893 INFO L87 Difference]: Start difference. First operand has 73604 states, 72323 states have (on average 1.2573316925459397) internal successors, (90934), 73603 states have internal predecessors, (90934), 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 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-23 04:00:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:17,023 INFO L93 Difference]: Finished difference Result 216020 states and 265967 transitions. [2021-11-23 04:00:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 04:00:17,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-23 04:00:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:17,606 INFO L225 Difference]: With dead ends: 216020 [2021-11-23 04:00:17,606 INFO L226 Difference]: Without dead ends: 138545 [2021-11-23 04:00:17,798 INFO L932 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 [2021-11-23 04:00:17,803 INFO L933 BasicCegarLoop]: 86815 mSDtfsCounter, 84206 mSDsluCounter, 86696 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84206 SdHoareTripleChecker+Valid, 173511 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:17,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84206 Valid, 173511 Invalid, 104 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 04:00:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138545 states. [2021-11-23 04:00:21,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138545 to 134832. [2021-11-23 04:00:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134832 states, 133551 states have (on average 1.1999386002351162) internal successors, (160253), 134831 states have internal predecessors, (160253), 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) [2021-11-23 04:00:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134832 states to 134832 states and 160253 transitions. [2021-11-23 04:00:22,288 INFO L78 Accepts]: Start accepts. Automaton has 134832 states and 160253 transitions. Word has length 67 [2021-11-23 04:00:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:22,289 INFO L470 AbstractCegarLoop]: Abstraction has 134832 states and 160253 transitions. [2021-11-23 04:00:22,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-23 04:00:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 134832 states and 160253 transitions. [2021-11-23 04:00:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 04:00:22,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:22,293 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] [2021-11-23 04:00:22,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 04:00:22,293 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1278 more)] === [2021-11-23 04:00:22,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:22,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1644630060, now seen corresponding path program 1 times [2021-11-23 04:00:22,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 04:00:22,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890665410] [2021-11-23 04:00:22,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:22,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:22,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 04:00:22,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890665410] [2021-11-23 04:00:22,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890665410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:22,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:22,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 04:00:22,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564968390] [2021-11-23 04:00:22,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:22,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 04:00:22,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 04:00:22,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 04:00:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:00:22,639 INFO L87 Difference]: Start difference. First operand 134832 states and 160253 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-23 04:00:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:28,473 INFO L93 Difference]: Finished difference Result 403821 states and 480026 transitions. [2021-11-23 04:00:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 04:00:28,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-23 04:00:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:29,211 INFO L225 Difference]: With dead ends: 403821 [2021-11-23 04:00:29,212 INFO L226 Difference]: Without dead ends: 269122 [2021-11-23 04:00:29,521 INFO L932 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 [2021-11-23 04:00:29,523 INFO L933 BasicCegarLoop]: 82611 mSDtfsCounter, 82263 mSDsluCounter, 82394 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82263 SdHoareTripleChecker+Valid, 165005 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:29,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82263 Valid, 165005 Invalid, 488 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [98 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 04:00:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269122 states. [2021-11-23 04:00:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269122 to 266438. [2021-11-23 04:00:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266438 states, 265157 states have (on average 1.2010280701622058) internal successors, (318461), 266437 states have internal predecessors, (318461), 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) [2021-11-23 04:00:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266438 states to 266438 states and 318461 transitions. [2021-11-23 04:00:35,526 INFO L78 Accepts]: Start accepts. Automaton has 266438 states and 318461 transitions. Word has length 68 [2021-11-23 04:00:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:35,527 INFO L470 AbstractCegarLoop]: Abstraction has 266438 states and 318461 transitions. [2021-11-23 04:00:35,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-23 04:00:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 266438 states and 318461 transitions. [2021-11-23 04:00:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 04:00:35,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:35,530 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] [2021-11-23 04:00:35,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 04:00:35,530 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1278 more)] === [2021-11-23 04:00:35,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 894973989, now seen corresponding path program 1 times [2021-11-23 04:00:35,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 04:00:35,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373966938] [2021-11-23 04:00:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:35,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:00:36,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 04:00:36,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373966938] [2021-11-23 04:00:36,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373966938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:36,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:36,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 04:00:36,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887651861] [2021-11-23 04:00:36,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:36,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 04:00:36,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 04:00:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 04:00:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:00:36,343 INFO L87 Difference]: Start difference. First operand 266438 states and 318461 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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)