./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:29:23,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:29:23,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:29:23,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:29:23,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:29:23,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:29:23,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:29:23,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:29:23,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:29:23,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:29:23,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:29:23,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:29:23,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:29:23,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:29:23,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:29:23,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:29:23,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:29:23,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:29:23,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:29:23,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:29:23,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:29:23,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:29:23,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:29:23,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:29:23,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:29:23,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:29:23,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:29:23,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:29:23,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:29:23,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:29:23,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:29:23,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:29:23,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:29:23,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:29:23,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:29:23,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:29:23,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:29:23,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:29:23,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:29:23,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:29:23,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:29:23,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:29:23,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:29:23,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:29:23,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:29:23,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:29:23,775 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:29:23,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:29:23,775 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:29:23,776 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:29:23,782 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:29:23,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:29:23,783 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:29:23,783 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:29:23,783 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:29:23,784 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:29:23,784 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:29:23,784 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:29:23,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:29:23,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:29:23,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:29:23,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:29:23,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:29:23,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:29:23,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:29:23,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:29:23,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:29:23,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:29:23,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:29:23,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:29:23,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:29:23,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:29:23,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:29:23,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:29:23,789 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:29:23,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:29:23,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:29:23,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:29:23,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:29:23,790 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 [2021-11-13 02:29:24,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:29:24,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:29:24,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:29:24,045 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:29:24,046 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:29:24,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-13 02:29:24,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data/4725919bf/33c82f94916f4fb189fcc0537de1da78/FLAG30fc91062 [2021-11-13 02:29:25,071 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:29:25,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-13 02:29:25,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data/4725919bf/33c82f94916f4fb189fcc0537de1da78/FLAG30fc91062 [2021-11-13 02:29:25,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data/4725919bf/33c82f94916f4fb189fcc0537de1da78 [2021-11-13 02:29:25,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:29:25,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:29:25,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:29:25,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:29:25,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:29:25,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:25" (1/1) ... [2021-11-13 02:29:25,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a940bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:25, skipping insertion in model container [2021-11-13 02:29:25,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:25" (1/1) ... [2021-11-13 02:29:25,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:29:25,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:29:28,052 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:29:28,251 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:29:28,253 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:29:29,639 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-13 02:29:29,642 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-13 02:29:29,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:29:29,730 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 02:29:29,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e3cdbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:29, skipping insertion in model container [2021-11-13 02:29:29,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:29:29,731 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:29:29,734 INFO L158 Benchmark]: Toolchain (without parser) took 4316.14ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 88.7MB in the beginning and 83.4MB in the end (delta: 5.2MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2021-11-13 02:29:29,734 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:29:29,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4313.72ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 88.7MB in the beginning and 83.4MB in the end (delta: 5.2MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2021-11-13 02:29:29,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4313.72ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 88.7MB in the beginning and 83.4MB in the end (delta: 5.2MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6616]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:29:31,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:29:31,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:29:31,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:29:31,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:29:31,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:29:31,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:29:31,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:29:31,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:29:31,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:29:31,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:29:31,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:29:31,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:29:31,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:29:31,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:29:31,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:29:31,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:29:31,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:29:31,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:29:31,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:29:31,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:29:31,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:29:31,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:29:31,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:29:31,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:29:31,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:29:31,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:29:31,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:29:31,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:29:31,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:29:31,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:29:31,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:29:32,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:29:32,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:29:32,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:29:32,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:29:32,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:29:32,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:29:32,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:29:32,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:29:32,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:29:32,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:29:32,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:29:32,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:29:32,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:29:32,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:29:32,056 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:29:32,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:29:32,056 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:29:32,057 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:29:32,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:29:32,057 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:29:32,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:29:32,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:29:32,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:29:32,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:29:32,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:29:32,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:29:32,061 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:29:32,061 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:29:32,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:29:32,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:29:32,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:29:32,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:29:32,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:29:32,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:29:32,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:29:32,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:29:32,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:29:32,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:29:32,064 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:29:32,064 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:29:32,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:29:32,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:29:32,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:29:32,065 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 [2021-11-13 02:29:32,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:29:32,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:29:32,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:29:32,498 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:29:32,498 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:29:32,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-13 02:29:32,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data/5fd8056a0/ce33180eac5642ccbd578149f0f30f2a/FLAG223c3a7d7 [2021-11-13 02:29:33,574 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:29:33,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-13 02:29:33,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data/5fd8056a0/ce33180eac5642ccbd578149f0f30f2a/FLAG223c3a7d7 [2021-11-13 02:29:33,926 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/data/5fd8056a0/ce33180eac5642ccbd578149f0f30f2a [2021-11-13 02:29:33,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:29:33,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:29:33,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:29:33,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:29:33,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:29:33,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:33" (1/1) ... [2021-11-13 02:29:33,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0222da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:33, skipping insertion in model container [2021-11-13 02:29:33,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:33" (1/1) ... [2021-11-13 02:29:33,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:29:34,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:29:38,027 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-13 02:29:38,030 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-13 02:29:38,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:29:38,092 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:29:38,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:29:38,713 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-13 02:29:38,714 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-13 02:29:38,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:29:38,784 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:29:39,401 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-13 02:29:39,401 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-13 02:29:39,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:29:39,847 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:29:39,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39 WrapperNode [2021-11-13 02:29:39,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:29:39,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:29:39,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:29:39,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:29:39,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:29:40,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:29:40,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:29:40,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:29:40,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:29:40,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:29:40,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:29:40,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:29:40,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (1/1) ... [2021-11-13 02:29:40,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:29:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:29:40,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:29:40,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:29:40,870 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-13 02:29:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-13 02:29:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 02:29:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 02:29:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-13 02:29:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-13 02:29:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 02:29:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 02:29:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_86 [2021-11-13 02:29:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_86 [2021-11-13 02:29:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:29:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:29:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 02:29:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 02:29:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 02:29:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 02:29:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 02:29:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 02:29:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_interrupt [2021-11-13 02:29:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_interrupt [2021-11-13 02:29:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 02:29:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 02:29:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 02:29:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 02:29:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 02:29:40,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 02:29:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 02:29:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 02:29:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 02:29:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 02:29:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 02:29:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 02:29:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 02:29:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 02:29:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:29:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:29:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:29:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_bcr [2021-11-13 02:29:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_bcr [2021-11-13 02:29:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:29:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 02:29:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 02:29:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 02:29:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 02:29:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~X~C_INT~TO~~u16~0 [2021-11-13 02:29:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~X~C_INT~TO~~u16~0 [2021-11-13 02:29:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2021-11-13 02:29:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2021-11-13 02:29:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 02:29:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 02:29:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-13 02:29:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-13 02:29:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 02:29:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 02:29:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_tx_ring [2021-11-13 02:29:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_tx_ring [2021-11-13 02:29:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 02:29:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 02:29:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-13 02:29:40,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-13 02:29:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 02:29:40,883 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 02:29:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_bcr [2021-11-13 02:29:40,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_bcr [2021-11-13 02:29:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-13 02:29:40,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-13 02:29:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 02:29:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 02:29:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 02:29:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 02:29:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 02:29:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 02:29:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 02:29:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 02:29:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 02:29:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 02:29:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_start [2021-11-13 02:29:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_start [2021-11-13 02:29:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-13 02:29:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-13 02:29:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:29:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 02:29:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 02:29:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-13 02:29:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-13 02:29:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-13 02:29:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2021-11-13 02:29:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-13 02:29:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-13 02:29:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-13 02:29:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-13 02:29:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-13 02:29:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-13 02:29:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_open [2021-11-13 02:29:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_open [2021-11-13 02:29:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-13 02:29:40,891 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-13 02:29:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 02:29:40,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 02:29:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 02:29:40,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 02:29:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:29:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 02:29:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 02:29:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 02:29:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:29:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:29:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_reset [2021-11-13 02:29:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_reset [2021-11-13 02:29:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 02:29:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-13 02:29:40,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-13 02:29:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-13 02:29:40,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-13 02:29:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_pcnet32_private [2021-11-13 02:29:40,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_pcnet32_private [2021-11-13 02:29:40,899 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-13 02:29:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-13 02:29:40,900 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_restart [2021-11-13 02:29:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_restart [2021-11-13 02:29:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-13 02:29:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-13 02:29:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-13 02:29:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-13 02:29:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 02:29:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 02:29:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 02:29:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 02:29:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 02:29:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 02:29:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_csr [2021-11-13 02:29:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_csr [2021-11-13 02:29:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 02:29:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 02:29:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 02:29:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_reset [2021-11-13 02:29:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_reset [2021-11-13 02:29:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-13 02:29:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-13 02:29:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:29:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:29:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:29:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 02:29:40,910 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 02:29:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:29:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:29:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 02:29:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:29:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 02:29:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 02:29:40,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 02:29:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_pm_resume [2021-11-13 02:29:40,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_pm_resume [2021-11-13 02:29:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_check_media [2021-11-13 02:29:40,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_check_media [2021-11-13 02:29:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_get_regs_len [2021-11-13 02:29:40,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_get_regs_len [2021-11-13 02:29:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-13 02:29:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-13 02:29:40,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-13 02:29:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_poll_controller [2021-11-13 02:29:40,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_poll_controller [2021-11-13 02:29:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_free_ring [2021-11-13 02:29:40,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_free_ring [2021-11-13 02:29:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 02:29:40,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 02:29:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:29:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:29:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-13 02:29:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-13 02:29:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 02:29:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 02:29:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-13 02:29:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-13 02:29:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2021-11-13 02:29:40,915 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2021-11-13 02:29:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_rx_ring [2021-11-13 02:29:40,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_rx_ring [2021-11-13 02:29:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_csr [2021-11-13 02:29:40,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_csr [2021-11-13 02:29:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_tx_timeout [2021-11-13 02:29:40,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_tx_timeout [2021-11-13 02:29:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-13 02:29:40,916 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-13 02:29:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_stop [2021-11-13 02:29:40,916 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_stop [2021-11-13 02:29:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:29:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 02:29:40,916 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 02:29:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:29:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_pcnet32_private [2021-11-13 02:29:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_pcnet32_private [2021-11-13 02:29:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:29:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:29:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:29:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:29:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:29:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_csr [2021-11-13 02:29:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_csr [2021-11-13 02:29:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_set_multicast_list [2021-11-13 02:29:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_set_multicast_list [2021-11-13 02:29:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-13 02:29:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-13 02:29:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 02:29:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 02:29:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2021-11-13 02:29:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2021-11-13 02:29:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 02:29:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 02:29:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_probe1 [2021-11-13 02:29:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_probe1 [2021-11-13 02:29:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-13 02:29:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-13 02:29:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-13 02:29:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-13 02:29:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_remove_one [2021-11-13 02:29:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_remove_one [2021-11-13 02:29:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2021-11-13 02:29:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2021-11-13 02:29:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_bcr [2021-11-13 02:29:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_bcr [2021-11-13 02:29:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-13 02:29:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-13 02:29:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-13 02:29:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-13 02:29:40,922 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 02:29:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 02:29:40,922 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_bcr [2021-11-13 02:29:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_bcr [2021-11-13 02:29:40,922 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 02:29:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 02:29:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_init_ring [2021-11-13 02:29:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_init_ring [2021-11-13 02:29:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_close [2021-11-13 02:29:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_close [2021-11-13 02:29:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-13 02:29:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-13 02:29:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 02:29:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 02:29:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_suspend [2021-11-13 02:29:40,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_suspend [2021-11-13 02:29:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 02:29:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 02:29:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 02:29:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 02:29:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 02:29:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 02:29:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 02:29:40,931 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 02:29:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 02:29:40,932 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 02:29:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_csr [2021-11-13 02:29:40,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_csr [2021-11-13 02:29:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_load_multicast [2021-11-13 02:29:40,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_load_multicast [2021-11-13 02:29:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-13 02:29:40,933 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-13 02:29:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_nway_reset [2021-11-13 02:29:40,933 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_nway_reset [2021-11-13 02:29:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~X~C_INT~X~~u16~0~TO~VOID [2021-11-13 02:29:40,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~X~C_INT~X~~u16~0~TO~VOID [2021-11-13 02:29:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 02:29:40,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 02:29:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-13 02:29:40,934 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-13 02:29:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 02:29:40,934 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 02:29:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-13 02:29:40,934 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-13 02:29:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-13 02:29:40,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-13 02:29:40,935 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-13 02:29:40,935 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-13 02:29:40,935 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-11-13 02:29:40,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-11-13 02:29:40,935 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-11-13 02:29:40,935 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-11-13 02:29:40,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 02:29:40,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 02:29:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-13 02:29:40,936 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-13 02:29:44,150 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 02:31:01,315 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 02:31:01,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:31:01,726 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-13 02:31:01,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:31:01 BoogieIcfgContainer [2021-11-13 02:31:01,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:31:01,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:31:01,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:31:01,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:31:01,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:29:33" (1/3) ... [2021-11-13 02:31:01,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679a1482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:31:01, skipping insertion in model container [2021-11-13 02:31:01,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:39" (2/3) ... [2021-11-13 02:31:01,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679a1482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:31:01, skipping insertion in model container [2021-11-13 02:31:01,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:31:01" (3/3) ... [2021-11-13 02:31:01,744 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-13 02:31:01,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:31:01,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:31:01,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:31:01,855 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=FINITE_AUTOMATA, 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 [2021-11-13 02:31:01,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:31:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 2696 states, 1873 states have (on average 1.3027229044313935) internal successors, (2440), 1913 states have internal predecessors, (2440), 700 states have call successors, (700), 125 states have call predecessors, (700), 124 states have return successors, (692), 679 states have call predecessors, (692), 692 states have call successors, (692) [2021-11-13 02:31:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-13 02:31:02,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:02,025 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:02,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:31:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash 530235293, now seen corresponding path program 1 times [2021-11-13 02:31:02,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:31:02,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808528629] [2021-11-13 02:31:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:02,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:31:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:31:02,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:31:02,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:31:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:10,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:31:10,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:31:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2021-11-13 02:31:11,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:31:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2021-11-13 02:31:13,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:31:13,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808528629] [2021-11-13 02:31:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808528629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:31:13,163 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:31:13,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:31:13,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677079717] [2021-11-13 02:31:13,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:31:13,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:31:13,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:31:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:31:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:31:13,209 INFO L87 Difference]: Start difference. First operand has 2696 states, 1873 states have (on average 1.3027229044313935) internal successors, (2440), 1913 states have internal predecessors, (2440), 700 states have call successors, (700), 125 states have call predecessors, (700), 124 states have return successors, (692), 679 states have call predecessors, (692), 692 states have call successors, (692) Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2021-11-13 02:31:15,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:32,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:32,317 INFO L93 Difference]: Finished difference Result 10155 states and 14630 transitions. [2021-11-13 02:31:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:31:32,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 258 [2021-11-13 02:31:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:32,401 INFO L225 Difference]: With dead ends: 10155 [2021-11-13 02:31:32,402 INFO L226 Difference]: Without dead ends: 7272 [2021-11-13 02:31:32,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:31:32,432 INFO L933 BasicCegarLoop]: 5591 mSDtfsCounter, 8841 mSDsluCounter, 5762 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 1174 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16665.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8841 SdHoareTripleChecker+Valid, 11353 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 93.10ms SdHoareTripleChecker+Time, 1174 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18092.61ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:32,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8841 Valid, 11353 Invalid, 2622 Unknown, 0 Unchecked, 93.10ms Time], IncrementalHoareTripleChecker [1174 Valid, 1447 Invalid, 1 Unknown, 0 Unchecked, 18092.61ms Time] [2021-11-13 02:31:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2021-11-13 02:31:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7266. [2021-11-13 02:31:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 5098 states have (on average 1.2928599450765006) internal successors, (6591), 5200 states have internal predecessors, (6591), 1817 states have call successors, (1817), 350 states have call predecessors, (1817), 350 states have return successors, (1817), 1782 states have call predecessors, (1817), 1817 states have call successors, (1817) [2021-11-13 02:31:33,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 10225 transitions. [2021-11-13 02:31:33,048 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 10225 transitions. Word has length 258 [2021-11-13 02:31:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:33,053 INFO L470 AbstractCegarLoop]: Abstraction has 7266 states and 10225 transitions. [2021-11-13 02:31:33,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2021-11-13 02:31:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 10225 transitions. [2021-11-13 02:31:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-13 02:31:33,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:33,076 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:33,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:31:33,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:31:33,302 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:31:33,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1237833833, now seen corresponding path program 1 times [2021-11-13 02:31:33,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:31:33,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787348344] [2021-11-13 02:31:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:33,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:31:33,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:31:33,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:31:33,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:31:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:40,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:31:40,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:31:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2021-11-13 02:31:42,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:31:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2021-11-13 02:31:43,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:31:43,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787348344] [2021-11-13 02:31:43,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787348344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:31:43,191 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:31:43,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:31:43,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516784862] [2021-11-13 02:31:43,191 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:31:43,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:31:43,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:31:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:31:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:31:43,195 INFO L87 Difference]: Start difference. First operand 7266 states and 10225 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-13 02:31:45,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:46,824 INFO L93 Difference]: Finished difference Result 19433 states and 27253 transitions. [2021-11-13 02:31:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:31:46,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 268 [2021-11-13 02:31:46,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:46,965 INFO L225 Difference]: With dead ends: 19433 [2021-11-13 02:31:46,965 INFO L226 Difference]: Without dead ends: 12198 [2021-11-13 02:31:47,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:31:47,022 INFO L933 BasicCegarLoop]: 4151 mSDtfsCounter, 2677 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2963.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 7713 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.89ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3079.63ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:47,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2677 Valid, 7713 Invalid, 95 Unknown, 0 Unchecked, 25.89ms Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 1 Unknown, 0 Unchecked, 3079.63ms Time] [2021-11-13 02:31:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12198 states. [2021-11-13 02:31:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12198 to 12191. [2021-11-13 02:31:47,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12191 states, 8556 states have (on average 1.2952314165497896) internal successors, (11082), 8711 states have internal predecessors, (11082), 2981 states have call successors, (2981), 655 states have call predecessors, (2981), 653 states have return successors, (2988), 2910 states have call predecessors, (2988), 2981 states have call successors, (2988) [2021-11-13 02:31:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 17051 transitions. [2021-11-13 02:31:47,941 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 17051 transitions. Word has length 268 [2021-11-13 02:31:47,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:47,942 INFO L470 AbstractCegarLoop]: Abstraction has 12191 states and 17051 transitions. [2021-11-13 02:31:47,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-13 02:31:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 17051 transitions. [2021-11-13 02:31:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-13 02:31:47,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:47,972 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 13, 13, 13, 13, 13, 13, 5, 5, 5, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:31:48,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 02:31:48,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:31:48,197 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:31:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:48,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1073062096, now seen corresponding path program 1 times [2021-11-13 02:31:48,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:31:48,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925429317] [2021-11-13 02:31:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:48,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:31:48,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:31:48,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:31:48,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:31:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:56,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:31:56,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2021-11-13 02:32:00,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2021-11-13 02:32:02,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:02,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925429317] [2021-11-13 02:32:02,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925429317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:02,839 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:02,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-13 02:32:02,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903562792] [2021-11-13 02:32:02,840 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:02,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:02,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:02,843 INFO L87 Difference]: Start difference. First operand 12191 states and 17051 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) [2021-11-13 02:32:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:03,449 INFO L93 Difference]: Finished difference Result 24351 states and 34058 transitions. [2021-11-13 02:32:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:32:03,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) Word has length 358 [2021-11-13 02:32:03,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:03,564 INFO L225 Difference]: With dead ends: 24351 [2021-11-13 02:32:03,564 INFO L226 Difference]: Without dead ends: 12191 [2021-11-13 02:32:03,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:03,636 INFO L933 BasicCegarLoop]: 3665 mSDtfsCounter, 3603 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3603 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.51ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.95ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:03,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3603 Valid, 3665 Invalid, 18 Unknown, 0 Unchecked, 12.51ms Time], IncrementalHoareTripleChecker [17 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 36.95ms Time] [2021-11-13 02:32:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12191 states. [2021-11-13 02:32:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12191 to 12191. [2021-11-13 02:32:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12191 states, 8556 states have (on average 1.2945301542777) internal successors, (11076), 8711 states have internal predecessors, (11076), 2981 states have call successors, (2981), 655 states have call predecessors, (2981), 653 states have return successors, (2988), 2910 states have call predecessors, (2988), 2981 states have call successors, (2988) [2021-11-13 02:32:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 17045 transitions. [2021-11-13 02:32:04,371 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 17045 transitions. Word has length 358 [2021-11-13 02:32:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:04,373 INFO L470 AbstractCegarLoop]: Abstraction has 12191 states and 17045 transitions. [2021-11-13 02:32:04,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) [2021-11-13 02:32:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 17045 transitions. [2021-11-13 02:32:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-13 02:32:04,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:04,395 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 13, 13, 13, 13, 13, 13, 5, 5, 5, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:04,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:04,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:32:04,596 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1147672046, now seen corresponding path program 1 times [2021-11-13 02:32:04,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:04,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147026848] [2021-11-13 02:32:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:04,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:04,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:04,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:04,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:32:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:11,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:32:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-11-13 02:32:13,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2021-11-13 02:32:15,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:15,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147026848] [2021-11-13 02:32:15,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147026848] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:15,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:15,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:32:15,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635773681] [2021-11-13 02:32:15,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:15,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:15,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:15,013 INFO L87 Difference]: Start difference. First operand 12191 states and 17045 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-13 02:32:17,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:32:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:30,714 INFO L93 Difference]: Finished difference Result 33034 states and 46040 transitions. [2021-11-13 02:32:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 358 [2021-11-13 02:32:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:30,833 INFO L225 Difference]: With dead ends: 33034 [2021-11-13 02:32:30,833 INFO L226 Difference]: Without dead ends: 20874 [2021-11-13 02:32:30,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:30,884 INFO L933 BasicCegarLoop]: 6124 mSDtfsCounter, 7820 mSDsluCounter, 5513 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 870 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13431.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7820 SdHoareTripleChecker+Valid, 11637 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.51ms SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14524.29ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:30,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7820 Valid, 11637 Invalid, 2281 Unknown, 0 Unchecked, 45.51ms Time], IncrementalHoareTripleChecker [870 Valid, 1410 Invalid, 1 Unknown, 0 Unchecked, 14524.29ms Time] [2021-11-13 02:32:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20874 states. [2021-11-13 02:32:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20874 to 20866. [2021-11-13 02:32:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20866 states, 14648 states have (on average 1.2927362097214636) internal successors, (18936), 14907 states have internal predecessors, (18936), 5029 states have call successors, (5029), 1190 states have call predecessors, (5029), 1188 states have return successors, (5038), 4910 states have call predecessors, (5038), 5029 states have call successors, (5038) [2021-11-13 02:32:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20866 states to 20866 states and 29003 transitions. [2021-11-13 02:32:32,308 INFO L78 Accepts]: Start accepts. Automaton has 20866 states and 29003 transitions. Word has length 358 [2021-11-13 02:32:32,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:32,309 INFO L470 AbstractCegarLoop]: Abstraction has 20866 states and 29003 transitions. [2021-11-13 02:32:32,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2021-11-13 02:32:32,310 INFO L276 IsEmpty]: Start isEmpty. Operand 20866 states and 29003 transitions. [2021-11-13 02:32:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-13 02:32:32,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:32,343 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 13, 13, 13, 13, 13, 13, 9, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:32,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:32,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:32:32,557 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:32,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash -623826835, now seen corresponding path program 1 times [2021-11-13 02:32:32,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:32,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127503246] [2021-11-13 02:32:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:32:32,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:32,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:32,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:32,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:32:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:32:39,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:32:39,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2021-11-13 02:32:41,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2021-11-13 02:32:42,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:32:42,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127503246] [2021-11-13 02:32:42,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127503246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:32:42,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:32:42,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:32:42,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702028555] [2021-11-13 02:32:42,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:32:42,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:32:42,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:32:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:42,985 INFO L87 Difference]: Start difference. First operand 20866 states and 29003 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-13 02:32:45,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:32:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:58,463 INFO L93 Difference]: Finished difference Result 49207 states and 68472 transitions. [2021-11-13 02:32:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:32:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 437 [2021-11-13 02:32:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:58,594 INFO L225 Difference]: With dead ends: 49207 [2021-11-13 02:32:58,595 INFO L226 Difference]: Without dead ends: 28372 [2021-11-13 02:32:58,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:32:58,662 INFO L933 BasicCegarLoop]: 7423 mSDtfsCounter, 6829 mSDsluCounter, 5518 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 604 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13232.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6829 SdHoareTripleChecker+Valid, 12941 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.87ms SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14237.38ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:58,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6829 Valid, 12941 Invalid, 2018 Unknown, 0 Unchecked, 36.87ms Time], IncrementalHoareTripleChecker [604 Valid, 1413 Invalid, 1 Unknown, 0 Unchecked, 14237.38ms Time] [2021-11-13 02:32:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28372 states. [2021-11-13 02:33:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28372 to 28364. [2021-11-13 02:33:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28364 states, 19958 states have (on average 1.295019541036176) internal successors, (25846), 20305 states have internal predecessors, (25846), 6815 states have call successors, (6815), 1592 states have call predecessors, (6815), 1590 states have return successors, (6826), 6656 states have call predecessors, (6826), 6815 states have call successors, (6826) [2021-11-13 02:33:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28364 states to 28364 states and 39487 transitions. [2021-11-13 02:33:00,517 INFO L78 Accepts]: Start accepts. Automaton has 28364 states and 39487 transitions. Word has length 437 [2021-11-13 02:33:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:00,521 INFO L470 AbstractCegarLoop]: Abstraction has 28364 states and 39487 transitions. [2021-11-13 02:33:00,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 4 states have call successors, (70), 3 states have call predecessors, (70), 3 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2021-11-13 02:33:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 28364 states and 39487 transitions. [2021-11-13 02:33:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-13 02:33:00,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:00,560 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 13, 13, 13, 13, 13, 13, 10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:00,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:00,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:00,774 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:00,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash 152672314, now seen corresponding path program 1 times [2021-11-13 02:33:00,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:00,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101369671] [2021-11-13 02:33:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:00,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:00,780 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:00,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:33:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:07,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:33:07,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2021-11-13 02:33:09,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 1313 trivial. 0 not checked. [2021-11-13 02:33:11,338 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:11,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101369671] [2021-11-13 02:33:11,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101369671] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:33:11,339 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:33:11,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:33:11,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555613928] [2021-11-13 02:33:11,339 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:11,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:33:11,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:33:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:11,341 INFO L87 Difference]: Start difference. First operand 28364 states and 39487 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 4 states have call successors, (72), 3 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-13 02:33:13,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:33:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:26,406 INFO L93 Difference]: Finished difference Result 64206 states and 89456 transitions. [2021-11-13 02:33:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:33:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 4 states have call successors, (72), 3 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 446 [2021-11-13 02:33:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:26,595 INFO L225 Difference]: With dead ends: 64206 [2021-11-13 02:33:26,596 INFO L226 Difference]: Without dead ends: 35873 [2021-11-13 02:33:26,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:33:26,813 INFO L933 BasicCegarLoop]: 7413 mSDtfsCounter, 6820 mSDsluCounter, 6049 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12725.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6820 SdHoareTripleChecker+Valid, 13462 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.20ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13513.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:26,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6820 Valid, 13462 Invalid, 1458 Unknown, 0 Unchecked, 34.20ms Time], IncrementalHoareTripleChecker [42 Valid, 1415 Invalid, 1 Unknown, 0 Unchecked, 13513.23ms Time] [2021-11-13 02:33:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35873 states. [2021-11-13 02:33:28,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35873 to 35865. [2021-11-13 02:33:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35865 states, 25274 states have (on average 1.2966685130964628) internal successors, (32772), 25709 states have internal predecessors, (32772), 8599 states have call successors, (8599), 1993 states have call predecessors, (8599), 1991 states have return successors, (8612), 8400 states have call predecessors, (8612), 8599 states have call successors, (8612) [2021-11-13 02:33:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35865 states to 35865 states and 49983 transitions. [2021-11-13 02:33:28,883 INFO L78 Accepts]: Start accepts. Automaton has 35865 states and 49983 transitions. Word has length 446 [2021-11-13 02:33:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:28,884 INFO L470 AbstractCegarLoop]: Abstraction has 35865 states and 49983 transitions. [2021-11-13 02:33:28,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 4 states have call successors, (72), 3 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-13 02:33:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 35865 states and 49983 transitions. [2021-11-13 02:33:28,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-13 02:33:28,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:28,923 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:28,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:29,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:29,145 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:29,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2039562479, now seen corresponding path program 1 times [2021-11-13 02:33:29,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:29,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499915349] [2021-11-13 02:33:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:29,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:29,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:29,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:29,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:33:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:33:36,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:33:36,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2021-11-13 02:33:39,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:33:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2021-11-13 02:33:41,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:41,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499915349] [2021-11-13 02:33:41,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499915349] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:33:41,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:33:41,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-11-13 02:33:41,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611931919] [2021-11-13 02:33:41,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:33:41,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:33:41,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:33:41,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:33:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:33:41,557 INFO L87 Difference]: Start difference. First operand 35865 states and 49983 transitions. Second operand has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 8 states have internal predecessors, (253), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (77), 3 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-13 02:33:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:33:51,805 INFO L93 Difference]: Finished difference Result 90701 states and 128884 transitions. [2021-11-13 02:33:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:33:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 8 states have internal predecessors, (253), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (77), 3 states have call predecessors, (77), 2 states have call successors, (77) Word has length 480 [2021-11-13 02:33:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:33:52,130 INFO L225 Difference]: With dead ends: 90701 [2021-11-13 02:33:52,130 INFO L226 Difference]: Without dead ends: 54867 [2021-11-13 02:33:52,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:33:52,424 INFO L933 BasicCegarLoop]: 5697 mSDtfsCounter, 3882 mSDsluCounter, 35432 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6668.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4140 SdHoareTripleChecker+Valid, 41129 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 146.93ms SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7034.81ms IncrementalHoareTripleChecker+Time [2021-11-13 02:33:52,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4140 Valid, 41129 Invalid, 1927 Unknown, 0 Unchecked, 146.93ms Time], IncrementalHoareTripleChecker [1033 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 7034.81ms Time] [2021-11-13 02:33:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54867 states. [2021-11-13 02:33:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54867 to 35871. [2021-11-13 02:33:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35871 states, 25280 states have (on average 1.2959651898734177) internal successors, (32762), 25715 states have internal predecessors, (32762), 8599 states have call successors, (8599), 1993 states have call predecessors, (8599), 1991 states have return successors, (8612), 8400 states have call predecessors, (8612), 8599 states have call successors, (8612) [2021-11-13 02:33:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35871 states to 35871 states and 49973 transitions. [2021-11-13 02:33:55,687 INFO L78 Accepts]: Start accepts. Automaton has 35871 states and 49973 transitions. Word has length 480 [2021-11-13 02:33:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:33:55,688 INFO L470 AbstractCegarLoop]: Abstraction has 35871 states and 49973 transitions. [2021-11-13 02:33:55,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.11111111111111) internal successors, (253), 8 states have internal predecessors, (253), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (77), 3 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-13 02:33:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 35871 states and 49973 transitions. [2021-11-13 02:33:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-13 02:33:55,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:55,733 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:55,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:33:55,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:33:55,957 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1143331309, now seen corresponding path program 1 times [2021-11-13 02:33:55,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:55,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547148344] [2021-11-13 02:33:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:55,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:55,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:55,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:56,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:34:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:03,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 3130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:34:03,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2021-11-13 02:34:08,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2021-11-13 02:34:10,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:10,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547148344] [2021-11-13 02:34:10,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547148344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:10,227 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:10,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-13 02:34:10,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599974570] [2021-11-13 02:34:10,229 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:10,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:34:10,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:10,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:34:10,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:34:10,232 INFO L87 Difference]: Start difference. First operand 35871 states and 49973 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 3 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2021-11-13 02:34:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:11,983 INFO L93 Difference]: Finished difference Result 59864 states and 82984 transitions. [2021-11-13 02:34:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:34:11,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 3 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 480 [2021-11-13 02:34:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:12,112 INFO L225 Difference]: With dead ends: 59864 [2021-11-13 02:34:12,112 INFO L226 Difference]: Without dead ends: 24024 [2021-11-13 02:34:12,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 957 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:34:12,235 INFO L933 BasicCegarLoop]: 3637 mSDtfsCounter, 3553 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.96ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:12,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3553 Valid, 3637 Invalid, 1 Unknown, 0 Unchecked, 7.49ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 7.96ms Time] [2021-11-13 02:34:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24024 states. [2021-11-13 02:34:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24024 to 24024. [2021-11-13 02:34:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24024 states, 16829 states have (on average 1.281537821617446) internal successors, (21567), 17168 states have internal predecessors, (21567), 5733 states have call successors, (5733), 1463 states have call predecessors, (5733), 1461 states have return successors, (5737), 5590 states have call predecessors, (5737), 5733 states have call successors, (5737) [2021-11-13 02:34:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24024 states to 24024 states and 33037 transitions. [2021-11-13 02:34:14,420 INFO L78 Accepts]: Start accepts. Automaton has 24024 states and 33037 transitions. Word has length 480 [2021-11-13 02:34:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:14,422 INFO L470 AbstractCegarLoop]: Abstraction has 24024 states and 33037 transitions. [2021-11-13 02:34:14,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 3 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2021-11-13 02:34:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 24024 states and 33037 transitions. [2021-11-13 02:34:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-13 02:34:14,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:14,458 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 13, 13, 13, 13, 13, 13, 12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:34:14,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:14,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:14,673 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:34:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:14,673 INFO L85 PathProgramCache]: Analyzing trace with hash 211757486, now seen corresponding path program 1 times [2021-11-13 02:34:14,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:14,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207753577] [2021-11-13 02:34:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:14,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:14,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:14,683 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:14,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:34:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:22,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 02:34:22,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 407 proven. 0 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2021-11-13 02:34:25,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1634 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2021-11-13 02:34:29,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:29,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207753577] [2021-11-13 02:34:29,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207753577] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:34:29,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:34:29,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2021-11-13 02:34:29,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3629691] [2021-11-13 02:34:29,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:29,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:34:29,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:29,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:34:29,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:34:29,391 INFO L87 Difference]: Start difference. First operand 24024 states and 33037 transitions. Second operand has 13 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 5 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2021-11-13 02:34:31,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:35:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:24,442 INFO L93 Difference]: Finished difference Result 99498 states and 140749 transitions. [2021-11-13 02:35:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 02:35:24,443 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 5 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) Word has length 502 [2021-11-13 02:35:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:24,957 INFO L225 Difference]: With dead ends: 99498 [2021-11-13 02:35:24,958 INFO L226 Difference]: Without dead ends: 75501 [2021-11-13 02:35:25,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 986 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=350, Invalid=1812, Unknown=0, NotChecked=0, Total=2162 [2021-11-13 02:35:25,065 INFO L933 BasicCegarLoop]: 5878 mSDtfsCounter, 19888 mSDsluCounter, 51397 mSDsCounter, 0 mSdLazyCounter, 5792 mSolverCounterSat, 5100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43768.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19918 SdHoareTripleChecker+Valid, 57275 SdHoareTripleChecker+Invalid, 10893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 184.77ms SdHoareTripleChecker+Time, 5100 IncrementalHoareTripleChecker+Valid, 5792 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46098.43ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:25,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19918 Valid, 57275 Invalid, 10893 Unknown, 0 Unchecked, 184.77ms Time], IncrementalHoareTripleChecker [5100 Valid, 5792 Invalid, 1 Unknown, 0 Unchecked, 46098.43ms Time] [2021-11-13 02:35:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75501 states. [2021-11-13 02:35:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75501 to 47886. [2021-11-13 02:35:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47886 states, 33527 states have (on average 1.2813254988516718) internal successors, (42959), 34208 states have internal predecessors, (42959), 11441 states have call successors, (11441), 2921 states have call predecessors, (11441), 2917 states have return successors, (11449), 11148 states have call predecessors, (11449), 11441 states have call successors, (11449) [2021-11-13 02:35:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47886 states to 47886 states and 65849 transitions. [2021-11-13 02:35:29,434 INFO L78 Accepts]: Start accepts. Automaton has 47886 states and 65849 transitions. Word has length 502 [2021-11-13 02:35:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:29,436 INFO L470 AbstractCegarLoop]: Abstraction has 47886 states and 65849 transitions. [2021-11-13 02:35:29,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 5 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2021-11-13 02:35:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 47886 states and 65849 transitions. [2021-11-13 02:35:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-11-13 02:35:29,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:29,482 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 13, 13, 13, 13, 13, 13, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:29,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:29,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:29,688 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2141258047, now seen corresponding path program 1 times [2021-11-13 02:35:29,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:29,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966266480] [2021-11-13 02:35:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:29,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:29,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:29,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:29,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:35:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:37,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 2911 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:37,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2021-11-13 02:35:38,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1591 trivial. 0 not checked. [2021-11-13 02:35:40,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:40,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966266480] [2021-11-13 02:35:40,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966266480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:40,413 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:40,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:35:40,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977697529] [2021-11-13 02:35:40,414 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:40,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:35:40,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:35:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:35:40,415 INFO L87 Difference]: Start difference. First operand 47886 states and 65849 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2021-11-13 02:35:42,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:35:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:58,539 INFO L93 Difference]: Finished difference Result 100079 states and 137658 transitions. [2021-11-13 02:35:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:35:58,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 515 [2021-11-13 02:35:58,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:58,783 INFO L225 Difference]: With dead ends: 100079 [2021-11-13 02:35:58,783 INFO L226 Difference]: Without dead ends: 52224 [2021-11-13 02:35:59,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:35:59,162 INFO L933 BasicCegarLoop]: 5630 mSDtfsCounter, 6358 mSDsluCounter, 4543 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 583 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13031.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6358 SdHoareTripleChecker+Valid, 10173 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.95ms SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13941.05ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:59,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6358 Valid, 10173 Invalid, 1991 Unknown, 0 Unchecked, 32.95ms Time], IncrementalHoareTripleChecker [583 Valid, 1407 Invalid, 1 Unknown, 0 Unchecked, 13941.05ms Time] [2021-11-13 02:35:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52224 states. [2021-11-13 02:36:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52224 to 52212. [2021-11-13 02:36:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52212 states, 36581 states have (on average 1.2814029140810803) internal successors, (46875), 37326 states have internal predecessors, (46875), 12459 states have call successors, (12459), 3175 states have call predecessors, (12459), 3171 states have return successors, (12467), 12140 states have call predecessors, (12467), 12459 states have call successors, (12467) [2021-11-13 02:36:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52212 states to 52212 states and 71801 transitions. [2021-11-13 02:36:03,063 INFO L78 Accepts]: Start accepts. Automaton has 52212 states and 71801 transitions. Word has length 515 [2021-11-13 02:36:03,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:03,064 INFO L470 AbstractCegarLoop]: Abstraction has 52212 states and 71801 transitions. [2021-11-13 02:36:03,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 4 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2021-11-13 02:36:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 52212 states and 71801 transitions. [2021-11-13 02:36:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2021-11-13 02:36:03,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:03,122 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 13, 13, 13, 13, 13, 13, 13, 13, 13, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:03,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:03,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:03,344 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:36:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash 915330537, now seen corresponding path program 1 times [2021-11-13 02:36:03,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:03,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856435757] [2021-11-13 02:36:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:03,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:03,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:03,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:03,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:36:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:11,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 3284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:36:11,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2021-11-13 02:36:14,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1655 trivial. 0 not checked. [2021-11-13 02:36:16,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:16,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856435757] [2021-11-13 02:36:16,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856435757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:16,758 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:16,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:36:16,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821111282] [2021-11-13 02:36:16,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:16,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:36:16,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:16,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:36:16,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:16,761 INFO L87 Difference]: Start difference. First operand 52212 states and 71801 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) [2021-11-13 02:36:19,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:36:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:33,696 INFO L93 Difference]: Finished difference Result 93791 states and 129075 transitions. [2021-11-13 02:36:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:36:33,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) Word has length 619 [2021-11-13 02:36:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:33,981 INFO L225 Difference]: With dead ends: 93791 [2021-11-13 02:36:33,981 INFO L226 Difference]: Without dead ends: 41582 [2021-11-13 02:36:34,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1234 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:36:34,090 INFO L933 BasicCegarLoop]: 6602 mSDtfsCounter, 5871 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12634.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5871 SdHoareTripleChecker+Valid, 12333 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.95ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13398.03ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:34,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5871 Valid, 12333 Invalid, 1439 Unknown, 0 Unchecked, 33.95ms Time], IncrementalHoareTripleChecker [32 Valid, 1406 Invalid, 1 Unknown, 0 Unchecked, 13398.03ms Time] [2021-11-13 02:36:34,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41582 states. [2021-11-13 02:36:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41582 to 41572. [2021-11-13 02:36:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41572 states, 29201 states have (on average 1.282387589466114) internal successors, (37447), 29774 states have internal predecessors, (37447), 9895 states have call successors, (9895), 2477 states have call predecessors, (9895), 2475 states have return successors, (9900), 9653 states have call predecessors, (9900), 9895 states have call successors, (9900) [2021-11-13 02:36:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41572 states to 41572 states and 57242 transitions. [2021-11-13 02:36:37,308 INFO L78 Accepts]: Start accepts. Automaton has 41572 states and 57242 transitions. Word has length 619 [2021-11-13 02:36:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:37,309 INFO L470 AbstractCegarLoop]: Abstraction has 41572 states and 57242 transitions. [2021-11-13 02:36:37,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 4 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (95), 4 states have call predecessors, (95), 4 states have call successors, (95) [2021-11-13 02:36:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 41572 states and 57242 transitions. [2021-11-13 02:36:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2021-11-13 02:36:37,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:37,347 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:37,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:37,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:37,561 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:36:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1588727656, now seen corresponding path program 1 times [2021-11-13 02:36:37,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:37,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202256198] [2021-11-13 02:36:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:37,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:37,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:37,569 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:37,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:36:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:45,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 02:36:45,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2021-11-13 02:36:48,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2021-11-13 02:36:51,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:51,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202256198] [2021-11-13 02:36:51,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202256198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:51,216 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:51,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-13 02:36:51,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752429568] [2021-11-13 02:36:51,216 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:51,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:36:51,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:51,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:36:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:36:51,218 INFO L87 Difference]: Start difference. First operand 41572 states and 57242 transitions. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 8 states have internal predecessors, (301), 2 states have call successors, (102), 2 states have call predecessors, (102), 6 states have return successors, (98), 6 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-13 02:36:59,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:59,447 INFO L93 Difference]: Finished difference Result 102669 states and 143985 transitions. [2021-11-13 02:36:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:36:59,449 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 8 states have internal predecessors, (301), 2 states have call successors, (102), 2 states have call predecessors, (102), 6 states have return successors, (98), 6 states have call predecessors, (98), 2 states have call successors, (98) Word has length 585 [2021-11-13 02:36:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:59,705 INFO L225 Difference]: With dead ends: 102669 [2021-11-13 02:36:59,705 INFO L226 Difference]: Without dead ends: 61128 [2021-11-13 02:36:59,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1168 GetRequests, 1158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:36:59,814 INFO L933 BasicCegarLoop]: 5118 mSDtfsCounter, 2387 mSDsluCounter, 40475 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2726.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 45593 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.88ms SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3005.20ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:59,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2847 Valid, 45593 Invalid, 496 Unknown, 0 Unchecked, 62.88ms Time], IncrementalHoareTripleChecker [231 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 3005.20ms Time] [2021-11-13 02:36:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61128 states. [2021-11-13 02:37:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61128 to 41596. [2021-11-13 02:37:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41596 states, 29217 states have (on average 1.282232946572201) internal successors, (37463), 29792 states have internal predecessors, (37463), 9895 states have call successors, (9895), 2477 states have call predecessors, (9895), 2483 states have return successors, (9916), 9659 states have call predecessors, (9916), 9895 states have call successors, (9916) [2021-11-13 02:37:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41596 states to 41596 states and 57274 transitions. [2021-11-13 02:37:03,879 INFO L78 Accepts]: Start accepts. Automaton has 41596 states and 57274 transitions. Word has length 585 [2021-11-13 02:37:03,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:03,880 INFO L470 AbstractCegarLoop]: Abstraction has 41596 states and 57274 transitions. [2021-11-13 02:37:03,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 8 states have internal predecessors, (301), 2 states have call successors, (102), 2 states have call predecessors, (102), 6 states have return successors, (98), 6 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-13 02:37:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 41596 states and 57274 transitions. [2021-11-13 02:37:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2021-11-13 02:37:03,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:03,915 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 14, 14, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:03,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:04,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:04,140 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash -678710406, now seen corresponding path program 1 times [2021-11-13 02:37:04,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:04,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247846078] [2021-11-13 02:37:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:04,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:04,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:04,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:04,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f87b4ccb-00fb-4502-ab1d-ccbdbb945cc2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:37:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:12,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 3168 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:37:12,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 1448 trivial. 0 not checked. [2021-11-13 02:37:14,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 1831 trivial. 0 not checked. [2021-11-13 02:37:16,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:16,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247846078] [2021-11-13 02:37:16,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247846078] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:16,380 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:16,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 02:37:16,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343431367] [2021-11-13 02:37:16,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:16,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:37:16,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:37:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:16,383 INFO L87 Difference]: Start difference. First operand 41596 states and 57274 transitions. Second operand has 10 states, 10 states have (on average 27.8) internal successors, (278), 8 states have internal predecessors, (278), 4 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (93), 6 states have call predecessors, (93), 4 states have call successors, (93)