./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:39,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:39,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:39,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:39,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:39,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:39,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:39,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:39,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:39,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:39,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:39,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:39,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:39,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:39,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:39,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:39,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:39,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:39,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:39,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:39,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:39,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:39,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:39,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:39,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:39,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:39,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:39,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:39,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:39,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:39,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:39,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:39,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:39,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:39,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:39,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:39,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:39,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:39,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:39,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:39,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:39,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:30:39,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:39,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:39,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:39,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:39,749 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:39,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:39,749 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:39,750 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:30:39,750 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:39,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:39,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:30:39,751 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:30:39,751 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:39,751 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:30:39,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:30:39,752 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:30:39,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:39,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:30:39,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:39,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:39,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:39,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:39,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:39,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:39,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:39,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:39,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:39,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:39,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:39,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:39,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:39,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:39,757 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:30:39,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:30:39,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:39,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:39,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:39,758 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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2021-11-13 01:30:40,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:40,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:40,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:40,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:40,056 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:40,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-13 01:30:40,145 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data/25c4d89fa/4c07d28c1dfd4560b0eba69e8ee1f0dd/FLAG984c078ef [2021-11-13 01:30:41,051 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:41,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-13 01:30:41,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data/25c4d89fa/4c07d28c1dfd4560b0eba69e8ee1f0dd/FLAG984c078ef [2021-11-13 01:30:41,488 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data/25c4d89fa/4c07d28c1dfd4560b0eba69e8ee1f0dd [2021-11-13 01:30:41,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:41,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:41,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:41,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:41,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:41,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:41" (1/1) ... [2021-11-13 01:30:41,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c627276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:41, skipping insertion in model container [2021-11-13 01:30:41,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:41" (1/1) ... [2021-11-13 01:30:41,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:41,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:43,950 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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-13 01:30:44,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:44,071 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 01:30:44,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b29de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:44, skipping insertion in model container [2021-11-13 01:30:44,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:44,072 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:30:44,075 INFO L158 Benchmark]: Toolchain (without parser) took 2581.31ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 56.1MB in the beginning and 83.4MB in the end (delta: -27.4MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2021-11-13 01:30:44,075 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 102.8MB. Free memory was 55.9MB in the beginning and 55.8MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:30:44,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2576.65ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 55.9MB in the beginning and 83.4MB in the end (delta: -27.6MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2021-11-13 01:30:44,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 102.8MB. Free memory was 55.9MB in the beginning and 55.8MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2576.65ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 55.9MB in the beginning and 83.4MB in the end (delta: -27.6MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5853]: 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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:46,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:46,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:46,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:46,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:46,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:46,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:46,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:46,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:46,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:46,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:46,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:46,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:46,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:46,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:46,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:46,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:46,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:46,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:46,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:46,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:46,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:46,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:46,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:46,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:46,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:46,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:46,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:46,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:46,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:46,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:46,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:46,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:46,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:46,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:46,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:46,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:46,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:46,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:46,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:46,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:46,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:30:46,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:46,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:46,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:46,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:46,768 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:46,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:46,769 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:46,769 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:46,769 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:46,769 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:46,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:46,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:46,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:30:46,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:46,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:30:46,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:46,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:30:46,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:30:46,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:30:46,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:46,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:30:46,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:46,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:30:46,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:46,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:46,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:46,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:46,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:30:46,777 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:30:46,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:46,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:30:46,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:46,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:46,778 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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2021-11-13 01:30:47,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:47,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:47,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:47,204 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:47,204 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:47,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-13 01:30:47,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data/c9a2a3a40/6b64c9cecc2a427498ab1692801c3c40/FLAG2091d769d [2021-11-13 01:30:48,476 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:48,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-13 01:30:48,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data/c9a2a3a40/6b64c9cecc2a427498ab1692801c3c40/FLAG2091d769d [2021-11-13 01:30:48,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/data/c9a2a3a40/6b64c9cecc2a427498ab1692801c3c40 [2021-11-13 01:30:48,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:48,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:48,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:48,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:48,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:48,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:48" (1/1) ... [2021-11-13 01:30:48,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4bcbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:48, skipping insertion in model container [2021-11-13 01:30:48,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:48" (1/1) ... [2021-11-13 01:30:48,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:48,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:51,461 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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-13 01:30:51,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:51,589 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:30:51,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:52,115 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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-13 01:30:52,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:52,187 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:30:52,889 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_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-11-13 01:30:52,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:52,985 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:30:52,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52 WrapperNode [2021-11-13 01:30:52,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:52,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:30:52,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:30:52,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:30:52,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:30:53,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:30:53,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:30:53,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:30:53,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:30:53,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:30:53,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:30:53,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:30:53,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (1/1) ... [2021-11-13 01:30:53,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:53,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:30:53,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:30:53,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:30:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_running_reset [2021-11-13 01:30:53,757 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_running_reset [2021-11-13 01:30:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_open [2021-11-13 01:30:53,757 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_open [2021-11-13 01:30:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:30:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:30:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:30:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:30:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 01:30:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:30:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 01:30:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 01:30:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 01:30:53,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 01:30:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 01:30:53,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 01:30:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_dec_reset [2021-11-13 01:30:53,759 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_dec_reset [2021-11-13 01:30:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_get_link_status [2021-11-13 01:30:53,759 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_get_link_status [2021-11-13 01:30:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 01:30:53,760 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 01:30:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-13 01:30:53,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-13 01:30:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 01:30:53,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 01:30:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_set_circuit_type [2021-11-13 01:30:53,760 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_set_circuit_type [2021-11-13 01:30:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkinput [2021-11-13 01:30:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkinput [2021-11-13 01:30:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 01:30:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 01:30:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:30:53,761 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:30:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:30:53,762 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:30:53,762 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_100ft [2021-11-13 01:30:53,762 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_100ft [2021-11-13 01:30:53,762 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 01:30:53,762 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 01:30:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_scram [2021-11-13 01:30:53,763 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_scram [2021-11-13 01:30:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-11-13 01:30:53,763 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-11-13 01:30:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_close [2021-11-13 01:30:53,763 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_close [2021-11-13 01:30:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkoutput [2021-11-13 01:30:53,764 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkoutput [2021-11-13 01:30:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_reset [2021-11-13 01:30:53,764 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_reset [2021-11-13 01:30:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-13 01:30:53,765 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-13 01:30:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_get_stats [2021-11-13 01:30:53,766 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_get_stats [2021-11-13 01:30:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:30:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_sc [2021-11-13 01:30:53,767 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_sc [2021-11-13 01:30:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_driver_timeout [2021-11-13 01:30:53,768 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_driver_timeout [2021-11-13 01:30:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_netif [2021-11-13 01:30:53,768 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_netif [2021-11-13 01:30:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:30:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 01:30:53,769 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 01:30:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-13 01:30:53,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-13 01:30:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 01:30:53,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 01:30:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_trace [2021-11-13 01:30:53,769 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_trace [2021-11-13 01:30:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:30:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:30:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 01:30:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:30:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110 [2021-11-13 01:30:53,771 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110 [2021-11-13 01:30:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:30:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:30:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:30:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-13 01:30:53,771 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-13 01:30:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:30:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:30:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-13 01:30:53,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-13 01:30:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 01:30:53,773 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 01:30:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_type [2021-11-13 01:30:53,773 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_type [2021-11-13 01:30:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 01:30:53,773 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 01:30:53,774 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_remove_one [2021-11-13 01:30:53,774 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_remove_one [2021-11-13 01:30:53,775 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-13 01:30:53,775 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-13 01:30:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_write [2021-11-13 01:30:53,776 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_write [2021-11-13 01:30:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_close [2021-11-13 01:30:53,776 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_close [2021-11-13 01:30:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_off [2021-11-13 01:30:53,776 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_off [2021-11-13 01:30:53,776 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 01:30:53,777 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 01:30:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-13 01:30:53,777 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-13 01:30:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 01:30:53,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 01:30:53,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 01:30:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 01:30:53,778 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 01:30:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 01:30:53,778 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_softreset [2021-11-13 01:30:53,778 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_softreset [2021-11-13 01:30:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110_bit [2021-11-13 01:30:53,781 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110_bit [2021-11-13 01:30:53,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 01:30:53,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 01:30:53,782 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 01:30:53,782 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 01:30:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:30:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:30:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:30:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:30:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-13 01:30:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-13 01:30:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 01:30:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 01:30:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_writereg [2021-11-13 01:30:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_writereg [2021-11-13 01:30:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ioctl [2021-11-13 01:30:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ioctl [2021-11-13 01:30:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 01:30:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 01:30:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_attach [2021-11-13 01:30:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_attach [2021-11-13 01:30:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-11-13 01:30:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-11-13 01:30:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_set_status [2021-11-13 01:30:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_set_status [2021-11-13 01:30:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:30:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 01:30:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 01:30:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 01:30:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 01:30:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 01:30:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 01:30:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:30:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_readreg [2021-11-13 01:30:53,794 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_readreg [2021-11-13 01:30:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:30:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-13 01:30:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-13 01:30:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:30:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 01:30:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 01:30:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-11-13 01:30:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-11-13 01:30:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:30:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:30:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:30:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_open [2021-11-13 01:30:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_open [2021-11-13 01:30:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 01:30:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 01:30:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_on [2021-11-13 01:30:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_on [2021-11-13 01:30:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-13 01:30:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-13 01:30:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:30:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_set_protocol [2021-11-13 01:30:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_set_protocol [2021-11-13 01:30:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 01:30:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 01:30:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-13 01:30:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-13 01:30:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-13 01:30:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-13 01:30:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:30:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:30:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-13 01:30:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-13 01:31:00,532 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 01:31:59,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:31:59,948 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:31:59,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:59 BoogieIcfgContainer [2021-11-13 01:31:59,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:31:59,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:31:59,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:31:59,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:31:59,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:48" (1/3) ... [2021-11-13 01:31:59,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0086e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:59, skipping insertion in model container [2021-11-13 01:31:59,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:52" (2/3) ... [2021-11-13 01:31:59,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0086e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:59, skipping insertion in model container [2021-11-13 01:31:59,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:59" (3/3) ... [2021-11-13 01:31:59,966 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-11-13 01:31:59,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:31:59,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:32:00,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:32:00,065 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 01:32:00,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:32:00,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 1794 states, 1154 states have (on average 1.3223570190641247) internal successors, (1526), 1202 states have internal predecessors, (1526), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) [2021-11-13 01:32:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:32:00,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:00,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:32:00,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:00,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1228848163, now seen corresponding path program 1 times [2021-11-13 01:32:00,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:00,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175671438] [2021-11-13 01:32:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:00,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:00,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:00,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:00,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:32:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:03,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:32:03,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 01:32:03,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 01:32:04,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:04,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175671438] [2021-11-13 01:32:04,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175671438] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:04,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:04,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:32:04,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2978964] [2021-11-13 01:32:04,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:04,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:32:04,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:04,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:32:04,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:32:04,511 INFO L87 Difference]: Start difference. First operand has 1794 states, 1154 states have (on average 1.3223570190641247) internal successors, (1526), 1202 states have internal predecessors, (1526), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:32:04,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:04,869 INFO L93 Difference]: Finished difference Result 3583 states and 5334 transitions. [2021-11-13 01:32:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:32:04,872 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 92 [2021-11-13 01:32:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:04,933 INFO L225 Difference]: With dead ends: 3583 [2021-11-13 01:32:04,933 INFO L226 Difference]: Without dead ends: 1777 [2021-11-13 01:32:04,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:32:04,976 INFO L933 BasicCegarLoop]: 2642 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:04,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 26.96ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:32:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2021-11-13 01:32:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1777. [2021-11-13 01:32:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1145 states have (on average 1.3161572052401747) internal successors, (1507), 1185 states have internal predecessors, (1507), 557 states have call successors, (557), 75 states have call predecessors, (557), 74 states have return successors, (556), 541 states have call predecessors, (556), 556 states have call successors, (556) [2021-11-13 01:32:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2620 transitions. [2021-11-13 01:32:05,234 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2620 transitions. Word has length 92 [2021-11-13 01:32:05,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:05,235 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 2620 transitions. [2021-11-13 01:32:05,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:32:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2620 transitions. [2021-11-13 01:32:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 01:32:05,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:05,243 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:32:05,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:05,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:05,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:05,468 INFO L85 PathProgramCache]: Analyzing trace with hash 306582499, now seen corresponding path program 1 times [2021-11-13 01:32:05,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:05,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911729225] [2021-11-13 01:32:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:05,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:05,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:05,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:05,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:32:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:08,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:32:08,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 01:32:09,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-13 01:32:10,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:10,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911729225] [2021-11-13 01:32:10,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911729225] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:10,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:10,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:32:10,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513175881] [2021-11-13 01:32:10,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:10,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:10,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:32:10,686 INFO L87 Difference]: Start difference. First operand 1777 states and 2620 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 01:32:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:11,482 INFO L93 Difference]: Finished difference Result 3550 states and 5239 transitions. [2021-11-13 01:32:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:32:11,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 92 [2021-11-13 01:32:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:11,520 INFO L225 Difference]: With dead ends: 3550 [2021-11-13 01:32:11,520 INFO L226 Difference]: Without dead ends: 1778 [2021-11-13 01:32:11,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:32:11,548 INFO L933 BasicCegarLoop]: 2615 mSDtfsCounter, 6 mSDsluCounter, 10448 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13063 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.25ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:11,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 13063 Invalid, 35 Unknown, 0 Unchecked, 64.25ms Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 333.96ms Time] [2021-11-13 01:32:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2021-11-13 01:32:11,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1778. [2021-11-13 01:32:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1146 states have (on average 1.3158813263525306) internal successors, (1508), 1186 states have internal predecessors, (1508), 557 states have call successors, (557), 75 states have call predecessors, (557), 74 states have return successors, (556), 541 states have call predecessors, (556), 556 states have call successors, (556) [2021-11-13 01:32:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2621 transitions. [2021-11-13 01:32:11,732 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2621 transitions. Word has length 92 [2021-11-13 01:32:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:11,737 INFO L470 AbstractCegarLoop]: Abstraction has 1778 states and 2621 transitions. [2021-11-13 01:32:11,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 01:32:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2621 transitions. [2021-11-13 01:32:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 01:32:11,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:11,743 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 01:32:11,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:11,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:11,959 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1335818877, now seen corresponding path program 1 times [2021-11-13 01:32:11,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:11,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965902424] [2021-11-13 01:32:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:11,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:11,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:11,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:12,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:32:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:14,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:14,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-13 01:32:15,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 01:32:17,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:17,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965902424] [2021-11-13 01:32:17,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965902424] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:17,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061596328] [2021-11-13 01:32:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:17,460 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:17,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:17,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:17,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-13 01:32:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:19,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:32:19,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-13 01:32:19,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-13 01:32:20,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1061596328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:20,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:32:20,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-13 01:32:20,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822638691] [2021-11-13 01:32:20,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:20,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:32:20,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:32:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:32:20,089 INFO L87 Difference]: Start difference. First operand 1778 states and 2621 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 01:32:20,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:20,841 INFO L93 Difference]: Finished difference Result 5215 states and 7694 transitions. [2021-11-13 01:32:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:32:20,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 94 [2021-11-13 01:32:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:20,898 INFO L225 Difference]: With dead ends: 5215 [2021-11-13 01:32:20,898 INFO L226 Difference]: Without dead ends: 3455 [2021-11-13 01:32:20,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:32:20,927 INFO L933 BasicCegarLoop]: 3444 mSDtfsCounter, 2488 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 346.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 6029 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.76ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 411.65ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:20,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 6029 Invalid, 14 Unknown, 0 Unchecked, 27.76ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 411.65ms Time] [2021-11-13 01:32:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2021-11-13 01:32:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3451. [2021-11-13 01:32:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 2216 states have (on average 1.3172382671480145) internal successors, (2919), 2294 states have internal predecessors, (2919), 1087 states have call successors, (1087), 148 states have call predecessors, (1087), 147 states have return successors, (1086), 1056 states have call predecessors, (1086), 1086 states have call successors, (1086) [2021-11-13 01:32:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 5092 transitions. [2021-11-13 01:32:21,249 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 5092 transitions. Word has length 94 [2021-11-13 01:32:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:21,251 INFO L470 AbstractCegarLoop]: Abstraction has 3451 states and 5092 transitions. [2021-11-13 01:32:21,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 01:32:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 5092 transitions. [2021-11-13 01:32:21,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 01:32:21,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:21,272 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 01:32:21,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:21,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:21,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:21,697 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1550797196, now seen corresponding path program 1 times [2021-11-13 01:32:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:21,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359770360] [2021-11-13 01:32:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:21,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:21,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:21,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:21,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:32:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:24,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:24,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-13 01:32:25,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 01:32:27,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:27,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359770360] [2021-11-13 01:32:27,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359770360] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:27,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [65015168] [2021-11-13 01:32:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:27,489 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:27,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:27,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:27,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-13 01:32:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:32:29,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-13 01:32:31,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-13 01:32:31,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [65015168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:31,858 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:32:31,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [7, 7] total 12 [2021-11-13 01:32:31,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841394030] [2021-11-13 01:32:31,859 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:31,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:32:31,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:32:31,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:32:31,860 INFO L87 Difference]: Start difference. First operand 3451 states and 5092 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 01:32:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:32,217 INFO L93 Difference]: Finished difference Result 5776 states and 8514 transitions. [2021-11-13 01:32:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:32:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2021-11-13 01:32:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:32,365 INFO L225 Difference]: With dead ends: 5776 [2021-11-13 01:32:32,365 INFO L226 Difference]: Without dead ends: 5773 [2021-11-13 01:32:32,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:32:32,374 INFO L933 BasicCegarLoop]: 3733 mSDtfsCounter, 2251 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 5742 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.81ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.22ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:32,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2251 Valid, 5742 Invalid, 5 Unknown, 0 Unchecked, 22.81ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 34.22ms Time] [2021-11-13 01:32:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5773 states. [2021-11-13 01:32:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5773 to 5745. [2021-11-13 01:32:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5745 states, 3674 states have (on average 1.3105606967882417) internal successors, (4815), 3812 states have internal predecessors, (4815), 1815 states have call successors, (1815), 258 states have call predecessors, (1815), 255 states have return successors, (1838), 1754 states have call predecessors, (1838), 1814 states have call successors, (1838) [2021-11-13 01:32:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5745 states to 5745 states and 8468 transitions. [2021-11-13 01:32:32,878 INFO L78 Accepts]: Start accepts. Automaton has 5745 states and 8468 transitions. Word has length 124 [2021-11-13 01:32:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:32,883 INFO L470 AbstractCegarLoop]: Abstraction has 5745 states and 8468 transitions. [2021-11-13 01:32:32,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 01:32:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5745 states and 8468 transitions. [2021-11-13 01:32:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-13 01:32:32,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:32,908 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:32:32,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:33,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:33,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:33,324 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1893426314, now seen corresponding path program 1 times [2021-11-13 01:32:33,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:33,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818226147] [2021-11-13 01:32:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:33,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:33,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:33,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:33,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:32:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:36,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:36,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-13 01:32:37,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-13 01:32:39,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:39,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818226147] [2021-11-13 01:32:39,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818226147] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:39,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1824751390] [2021-11-13 01:32:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:39,704 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:39,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:39,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:39,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-13 01:32:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:41,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:41,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:32:43,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:32:44,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1824751390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:44,382 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:32:44,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [7, 7] total 14 [2021-11-13 01:32:44,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862994769] [2021-11-13 01:32:44,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:44,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:44,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:44,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:44,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:32:44,385 INFO L87 Difference]: Start difference. First operand 5745 states and 8468 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 01:32:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:45,845 INFO L93 Difference]: Finished difference Result 17191 states and 25434 transitions. [2021-11-13 01:32:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 182 [2021-11-13 01:32:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:46,034 INFO L225 Difference]: With dead ends: 17191 [2021-11-13 01:32:46,034 INFO L226 Difference]: Without dead ends: 11479 [2021-11-13 01:32:46,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:32:46,129 INFO L933 BasicCegarLoop]: 3201 mSDtfsCounter, 2585 mSDsluCounter, 8988 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 339.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2589 SdHoareTripleChecker+Valid, 12189 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.38ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 351.55ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:46,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2589 Valid, 12189 Invalid, 34 Unknown, 0 Unchecked, 52.38ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 351.55ms Time] [2021-11-13 01:32:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11479 states. [2021-11-13 01:32:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11479 to 11464. [2021-11-13 01:32:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11464 states, 7334 states have (on average 1.30992637032997) internal successors, (9607), 7610 states have internal predecessors, (9607), 3621 states have call successors, (3621), 513 states have call predecessors, (3621), 508 states have return successors, (3710), 3500 states have call predecessors, (3710), 3620 states have call successors, (3710) [2021-11-13 01:32:47,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11464 states to 11464 states and 16938 transitions. [2021-11-13 01:32:47,352 INFO L78 Accepts]: Start accepts. Automaton has 11464 states and 16938 transitions. Word has length 182 [2021-11-13 01:32:47,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:47,352 INFO L470 AbstractCegarLoop]: Abstraction has 11464 states and 16938 transitions. [2021-11-13 01:32:47,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 01:32:47,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11464 states and 16938 transitions. [2021-11-13 01:32:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-13 01:32:47,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:47,377 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:32:47,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:47,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:47,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:47,790 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:47,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash 641500446, now seen corresponding path program 1 times [2021-11-13 01:32:47,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:47,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733453199] [2021-11-13 01:32:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:47,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:47,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:47,797 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:47,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:32:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:50,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:50,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-13 01:32:52,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-13 01:32:54,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:54,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733453199] [2021-11-13 01:32:54,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733453199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:54,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [714432562] [2021-11-13 01:32:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:54,041 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:54,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:54,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:54,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-13 01:32:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:55,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:55,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:32:57,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:32:58,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [714432562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:58,603 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:32:58,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [7, 7] total 14 [2021-11-13 01:32:58,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390757599] [2021-11-13 01:32:58,604 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:58,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:58,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:32:58,606 INFO L87 Difference]: Start difference. First operand 11464 states and 16938 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 01:33:00,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:00,695 INFO L93 Difference]: Finished difference Result 34338 states and 50894 transitions. [2021-11-13 01:33:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:33:00,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 179 [2021-11-13 01:33:00,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:00,951 INFO L225 Difference]: With dead ends: 34338 [2021-11-13 01:33:00,951 INFO L226 Difference]: Without dead ends: 22907 [2021-11-13 01:33:01,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:33:01,074 INFO L933 BasicCegarLoop]: 3288 mSDtfsCounter, 2584 mSDsluCounter, 9164 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 276.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 12452 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.65ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 289.75ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:01,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 12452 Invalid, 37 Unknown, 0 Unchecked, 48.65ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 289.75ms Time] [2021-11-13 01:33:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22907 states. [2021-11-13 01:33:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22907 to 22852. [2021-11-13 01:33:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22852 states, 14606 states have (on average 1.3087087498288374) internal successors, (19115), 15172 states have internal predecessors, (19115), 7231 states have call successors, (7231), 1023 states have call predecessors, (7231), 1014 states have return successors, (7470), 6976 states have call predecessors, (7470), 7230 states have call successors, (7470) [2021-11-13 01:33:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22852 states to 22852 states and 33816 transitions. [2021-11-13 01:33:03,221 INFO L78 Accepts]: Start accepts. Automaton has 22852 states and 33816 transitions. Word has length 179 [2021-11-13 01:33:03,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:03,225 INFO L470 AbstractCegarLoop]: Abstraction has 22852 states and 33816 transitions. [2021-11-13 01:33:03,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 01:33:03,225 INFO L276 IsEmpty]: Start isEmpty. Operand 22852 states and 33816 transitions. [2021-11-13 01:33:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-13 01:33:03,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:03,268 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:03,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:03,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:03,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:03,683 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:03,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1352839717, now seen corresponding path program 1 times [2021-11-13 01:33:03,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:03,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492326498] [2021-11-13 01:33:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:03,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:03,687 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:03,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:33:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:06,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:33:06,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-13 01:33:07,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-13 01:33:09,573 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:09,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492326498] [2021-11-13 01:33:09,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492326498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:09,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [496454153] [2021-11-13 01:33:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:09,574 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:09,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:33:09,586 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:33:09,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 01:33:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:11,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:11,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:33:13,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:33:14,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [496454153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:14,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:33:14,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [7, 7] total 14 [2021-11-13 01:33:14,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618858880] [2021-11-13 01:33:14,454 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:14,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:14,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:33:14,456 INFO L87 Difference]: Start difference. First operand 22852 states and 33816 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 01:33:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:17,313 INFO L93 Difference]: Finished difference Result 68570 states and 101684 transitions. [2021-11-13 01:33:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:33:17,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 181 [2021-11-13 01:33:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:17,765 INFO L225 Difference]: With dead ends: 68570 [2021-11-13 01:33:17,765 INFO L226 Difference]: Without dead ends: 45751 [2021-11-13 01:33:18,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:33:18,171 INFO L933 BasicCegarLoop]: 3203 mSDtfsCounter, 2584 mSDsluCounter, 8992 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 12195 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.74ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.16ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:18,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 12195 Invalid, 34 Unknown, 0 Unchecked, 37.74ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 238.16ms Time] [2021-11-13 01:33:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45751 states. [2021-11-13 01:33:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45751 to 45676. [2021-11-13 01:33:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45676 states, 29198 states have (on average 1.3078635522981026) internal successors, (38187), 30326 states have internal predecessors, (38187), 14449 states have call successors, (14449), 2045 states have call predecessors, (14449), 2028 states have return successors, (15024), 13944 states have call predecessors, (15024), 14448 states have call successors, (15024) [2021-11-13 01:33:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45676 states to 45676 states and 67660 transitions. [2021-11-13 01:33:22,453 INFO L78 Accepts]: Start accepts. Automaton has 45676 states and 67660 transitions. Word has length 181 [2021-11-13 01:33:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:22,454 INFO L470 AbstractCegarLoop]: Abstraction has 45676 states and 67660 transitions. [2021-11-13 01:33:22,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 01:33:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 45676 states and 67660 transitions. [2021-11-13 01:33:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 01:33:22,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:22,494 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:22,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-13 01:33:22,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:22,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:22,911 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1136912857, now seen corresponding path program 1 times [2021-11-13 01:33:22,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:22,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69384823] [2021-11-13 01:33:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:22,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:22,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:22,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:22,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:33:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:25,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:33:25,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-13 01:33:27,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-13 01:33:29,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:29,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69384823] [2021-11-13 01:33:29,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69384823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:29,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290610164] [2021-11-13 01:33:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:29,267 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:29,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:33:29,268 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:33:29,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-13 01:33:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:30,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:30,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:33:33,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:33:33,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1290610164] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:33,977 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:33:33,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [7, 7] total 14 [2021-11-13 01:33:33,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082826506] [2021-11-13 01:33:33,978 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:33,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:33,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:33,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:33,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:33:33,980 INFO L87 Difference]: Start difference. First operand 45676 states and 67660 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 01:33:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:38,847 INFO L93 Difference]: Finished difference Result 136438 states and 202502 transitions. [2021-11-13 01:33:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:33:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 180 [2021-11-13 01:33:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:39,890 INFO L225 Difference]: With dead ends: 136438 [2021-11-13 01:33:39,890 INFO L226 Difference]: Without dead ends: 90795 [2021-11-13 01:33:40,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:33:40,401 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 2583 mSDsluCounter, 8994 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 12198 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.68ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.15ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:40,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2587 Valid, 12198 Invalid, 34 Unknown, 0 Unchecked, 23.68ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 207.15ms Time] [2021-11-13 01:33:40,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90795 states. [2021-11-13 01:33:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90795 to 90654. [2021-11-13 01:33:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90654 states, 57888 states have (on average 1.3062638197899392) internal successors, (75617), 60120 states have internal predecessors, (75617), 28727 states have call successors, (28727), 4069 states have call predecessors, (28727), 4038 states have return successors, (30042), 27730 states have call predecessors, (30042), 28726 states have call successors, (30042) [2021-11-13 01:33:47,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90654 states to 90654 states and 134386 transitions. [2021-11-13 01:33:47,464 INFO L78 Accepts]: Start accepts. Automaton has 90654 states and 134386 transitions. Word has length 180 [2021-11-13 01:33:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:47,465 INFO L470 AbstractCegarLoop]: Abstraction has 90654 states and 134386 transitions. [2021-11-13 01:33:47,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 01:33:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 90654 states and 134386 transitions. [2021-11-13 01:33:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-13 01:33:47,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:47,514 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:47,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:47,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:47,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:47,927 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash 695532250, now seen corresponding path program 1 times [2021-11-13 01:33:47,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:47,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816453785] [2021-11-13 01:33:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:47,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:47,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:47,934 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:47,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:33:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:50,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:33:50,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 01:33:52,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 01:33:54,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:54,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816453785] [2021-11-13 01:33:54,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816453785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:33:54,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1806208315] [2021-11-13 01:33:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:54,116 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:54,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:33:54,117 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:33:54,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-13 01:33:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:33:56,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-13 01:33:59,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-13 01:34:00,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1806208315] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:34:00,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:34:00,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7, 7] total 19 [2021-11-13 01:34:00,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582473102] [2021-11-13 01:34:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:00,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:34:00,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:34:00,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:34:00,966 INFO L87 Difference]: Start difference. First operand 90654 states and 134386 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-13 01:34:03,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:34:05,222 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 01:34:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:35,423 INFO L93 Difference]: Finished difference Result 227508 states and 337582 transitions. [2021-11-13 01:34:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:34:35,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2021-11-13 01:34:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:36,898 INFO L225 Difference]: With dead ends: 227508 [2021-11-13 01:34:36,898 INFO L226 Difference]: Without dead ends: 136887 [2021-11-13 01:34:37,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-11-13 01:34:37,790 INFO L933 BasicCegarLoop]: 3639 mSDtfsCounter, 2902 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 204 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23811.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2909 SdHoareTripleChecker+Valid, 21298 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.57ms SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25091.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:37,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2909 Valid, 21298 Invalid, 2926 Unknown, 0 Unchecked, 76.57ms Time], IncrementalHoareTripleChecker [204 Valid, 2720 Invalid, 2 Unknown, 0 Unchecked, 25091.68ms Time] [2021-11-13 01:34:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136887 states. [2021-11-13 01:34:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136887 to 136432. [2021-11-13 01:34:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136432 states, 87042 states have (on average 1.3050136715608556) internal successors, (113591), 90402 states have internal predecessors, (113591), 43333 states have call successors, (43333), 6069 states have call predecessors, (43333), 6056 states have return successors, (45308), 41852 states have call predecessors, (45308), 43332 states have call successors, (45308) [2021-11-13 01:34:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136432 states to 136432 states and 202232 transitions. [2021-11-13 01:34:47,297 INFO L78 Accepts]: Start accepts. Automaton has 136432 states and 202232 transitions. Word has length 192 [2021-11-13 01:34:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:47,298 INFO L470 AbstractCegarLoop]: Abstraction has 136432 states and 202232 transitions. [2021-11-13 01:34:47,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-13 01:34:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 136432 states and 202232 transitions. [2021-11-13 01:34:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-13 01:34:47,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:47,350 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-11-13 01:34:47,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:47,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-13 01:34:47,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:34:47,779 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1654565030, now seen corresponding path program 1 times [2021-11-13 01:34:47,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:47,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505226191] [2021-11-13 01:34:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:47,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:47,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:47,784 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:47,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 01:34:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:50,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:34:50,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-13 01:34:51,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-13 01:34:53,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:53,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505226191] [2021-11-13 01:34:53,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505226191] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:53,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [343988451] [2021-11-13 01:34:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:53,936 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:34:53,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:34:53,937 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:34:53,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-13 01:34:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:55,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:34:55,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:34:58,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:35:00,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [343988451] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:00,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948368656] [2021-11-13 01:35:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:00,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:35:00,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:35:00,567 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:35:00,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab46b823-1a9e-4aa0-9e35-c9900efefb9c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 01:35:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:01,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:35:01,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:35:03,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:35:05,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948368656] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:35:05,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:35:05,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 9, 8, 9] total 20 [2021-11-13 01:35:05,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643411224] [2021-11-13 01:35:05,505 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:35:05,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 01:35:05,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:35:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 01:35:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:35:05,508 INFO L87 Difference]: Start difference. First operand 136432 states and 202232 transitions. Second operand has 20 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 6 states have call successors, (58), 4 states have call predecessors, (58), 8 states have return successors, (54), 6 states have call predecessors, (54), 5 states have call successors, (54) [2021-11-13 01:35:07,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:35:09,745 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 01:36:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:22,023 INFO L93 Difference]: Finished difference Result 296117 states and 439084 transitions. [2021-11-13 01:36:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-13 01:36:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 6 states have call successors, (58), 4 states have call predecessors, (58), 8 states have return successors, (54), 6 states have call predecessors, (54), 5 states have call successors, (54) Word has length 193 [2021-11-13 01:36:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:24,146 INFO L225 Difference]: With dead ends: 296117 [2021-11-13 01:36:24,146 INFO L226 Difference]: Without dead ends: 159588 [2021-11-13 01:36:25,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1140 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=364, Invalid=2606, Unknown=0, NotChecked=0, Total=2970 [2021-11-13 01:36:25,095 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 8002 mSDsluCounter, 60370 mSDsCounter, 0 mSdLazyCounter, 7395 mSolverCounterSat, 2467 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57914.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8016 SdHoareTripleChecker+Valid, 65225 SdHoareTripleChecker+Invalid, 9864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 200.79ms SdHoareTripleChecker+Time, 2467 IncrementalHoareTripleChecker+Valid, 7395 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60609.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:25,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8016 Valid, 65225 Invalid, 9864 Unknown, 0 Unchecked, 200.79ms Time], IncrementalHoareTripleChecker [2467 Valid, 7395 Invalid, 2 Unknown, 0 Unchecked, 60609.51ms Time] [2021-11-13 01:36:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159588 states.