./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/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 f25e8d9a29012500b38126aa22b2b7d181aad99a845cece264158253e2ec92e3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:26:31,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:26:31,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:26:31,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:26:31,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:26:31,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:26:31,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:26:31,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:26:31,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:26:31,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:26:31,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:26:31,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:26:31,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:26:31,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:26:32,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:26:32,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:26:32,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:26:32,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:26:32,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:26:32,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:26:32,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:26:32,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:26:32,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:26:32,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:26:32,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:26:32,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:26:32,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:26:32,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:26:32,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:26:32,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:26:32,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:26:32,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:26:32,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:26:32,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:26:32,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:26:32,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:26:32,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:26:32,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:26:32,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:26:32,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:26:32,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:26:32,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:26:32,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:26:32,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:26:32,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:26:32,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:26:32,104 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:26:32,105 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:26:32,105 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:26:32,105 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:26:32,105 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:26:32,106 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:26:32,113 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:26:32,113 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:26:32,114 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:26:32,114 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:26:32,114 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:26:32,114 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:26:32,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:26:32,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:26:32,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:26:32,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:26:32,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:26:32,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:26:32,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:26:32,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:26:32,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:26:32,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:26:32,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:26:32,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:26:32,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:26:32,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:26:32,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:26:32,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:26:32,121 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:26:32,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:26:32,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:26:32,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:26:32,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:26:32,122 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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f25e8d9a29012500b38126aa22b2b7d181aad99a845cece264158253e2ec92e3 [2021-11-13 02:26:32,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:26:32,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:26:32,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:26:32,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:26:32,491 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:26:32,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i [2021-11-13 02:26:32,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data/61bac4c0e/2e5cd30e04e44eb396ea2e67908ac576/FLAG553067b1b [2021-11-13 02:26:33,548 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:26:33,549 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i [2021-11-13 02:26:33,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data/61bac4c0e/2e5cd30e04e44eb396ea2e67908ac576/FLAG553067b1b [2021-11-13 02:26:33,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data/61bac4c0e/2e5cd30e04e44eb396ea2e67908ac576 [2021-11-13 02:26:33,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:26:33,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:26:34,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:26:34,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:26:34,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:26:34,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:33" (1/1) ... [2021-11-13 02:26:34,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a5b9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:34, skipping insertion in model container [2021-11-13 02:26:34,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:33" (1/1) ... [2021-11-13 02:26:34,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:26:34,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:26:34,992 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,359 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,403 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,416 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,422 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,460 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,461 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,521 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,646 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,676 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,681 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,685 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,689 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,690 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,694 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,703 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,704 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,712 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,718 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,719 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,720 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,721 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,722 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,726 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,727 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,728 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:26:35,748 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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i[192897,192910] [2021-11-13 02:26:35,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:26:35,820 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 02:26:35,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@315a4620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:35, skipping insertion in model container [2021-11-13 02:26:35,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:26:35,821 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:26:35,824 INFO L158 Benchmark]: Toolchain (without parser) took 1823.79ms. Allocated memory is still 98.6MB. Free memory was 53.0MB in the beginning and 39.4MB in the end (delta: 13.5MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2021-11-13 02:26:35,826 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory was 78.2MB in the beginning and 78.1MB in the end (delta: 50.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:26:35,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1806.65ms. Allocated memory is still 98.6MB. Free memory was 52.8MB in the beginning and 39.4MB in the end (delta: 13.3MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2021-11-13 02:26:35,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory was 78.2MB in the beginning and 78.1MB in the end (delta: 50.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1806.65ms. Allocated memory is still 98.6MB. Free memory was 52.8MB in the beginning and 39.4MB in the end (delta: 13.3MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3767]: 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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/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 f25e8d9a29012500b38126aa22b2b7d181aad99a845cece264158253e2ec92e3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:26:38,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:26:38,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:26:38,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:26:38,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:26:38,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:26:38,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:26:38,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:26:38,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:26:38,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:26:38,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:26:38,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:26:38,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:26:38,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:26:38,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:26:38,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:26:38,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:26:38,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:26:38,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:26:38,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:26:38,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:26:38,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:26:38,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:26:38,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:26:38,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:26:38,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:26:38,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:26:38,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:26:38,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:26:38,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:26:38,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:26:38,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:26:38,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:26:38,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:26:38,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:26:38,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:26:38,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:26:38,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:26:38,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:26:38,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:26:38,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:26:38,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:26:38,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:26:38,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:26:38,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:26:38,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:26:38,296 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:26:38,296 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:26:38,296 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:26:38,296 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:26:38,296 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:26:38,297 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:26:38,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:26:38,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:26:38,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:26:38,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:26:38,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:26:38,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:26:38,300 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:26:38,300 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:26:38,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:26:38,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:26:38,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:26:38,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:26:38,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:26:38,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:26:38,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:26:38,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:26:38,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:26:38,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:26:38,303 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:26:38,303 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:26:38,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:26:38,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:26:38,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:26:38,304 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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f25e8d9a29012500b38126aa22b2b7d181aad99a845cece264158253e2ec92e3 [2021-11-13 02:26:38,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:26:38,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:26:38,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:26:38,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:26:38,814 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:26:38,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i [2021-11-13 02:26:38,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data/83c33fa00/293eabab5d614a1b8953b86e31066e35/FLAGda9b8f1c8 [2021-11-13 02:26:39,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:26:39,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i [2021-11-13 02:26:39,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data/83c33fa00/293eabab5d614a1b8953b86e31066e35/FLAGda9b8f1c8 [2021-11-13 02:26:40,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/data/83c33fa00/293eabab5d614a1b8953b86e31066e35 [2021-11-13 02:26:40,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:26:40,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:26:40,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:26:40,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:26:40,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:26:40,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:40" (1/1) ... [2021-11-13 02:26:40,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27af6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:40, skipping insertion in model container [2021-11-13 02:26:40,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:40" (1/1) ... [2021-11-13 02:26:40,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:26:40,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:26:42,143 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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i[192897,192910] [2021-11-13 02:26:42,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:26:42,250 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:26:42,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:26:42,610 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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i[192897,192910] [2021-11-13 02:26:42,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:26:42,648 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:26:43,006 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_3a28e35a-0d66-40b4-8982-ddf4a3230d09/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-loop.ko.cil.out.i[192897,192910] [2021-11-13 02:26:43,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:26:43,132 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:26:43,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43 WrapperNode [2021-11-13 02:26:43,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:26:43,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:26:43,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:26:43,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:26:43,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:26:43,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:26:43,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:26:43,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:26:43,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:26:43,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:26:43,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:26:43,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:26:43,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (1/1) ... [2021-11-13 02:26:43,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:26:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:26:43,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:26:43,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:26:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:26:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure bio_endio [2021-11-13 02:26:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_endio [2021-11-13 02:26:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:26:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:26:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 02:26:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:26:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 02:26:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure vfs_fsync [2021-11-13 02:26:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure vfs_fsync [2021-11-13 02:26:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-13 02:26:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-13 02:26:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 02:26:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 02:26:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:26:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:26:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure add_disk [2021-11-13 02:26:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure add_disk [2021-11-13 02:26:43,851 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2021-11-13 02:26:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2021-11-13 02:26:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-13 02:26:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-13 02:26:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_xor [2021-11-13 02:26:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_xor [2021-11-13 02:26:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure invalidate_bdev [2021-11-13 02:26:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure invalidate_bdev [2021-11-13 02:26:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-13 02:26:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-13 02:26:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 02:26:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 02:26:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure huge_encode_dev [2021-11-13 02:26:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure huge_encode_dev [2021-11-13 02:26:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure lo_do_transfer [2021-11-13 02:26:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_do_transfer [2021-11-13 02:26:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure loop_sysfs_exit [2021-11-13 02:26:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_sysfs_exit [2021-11-13 02:26:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2021-11-13 02:26:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2021-11-13 02:26:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_should_stop [2021-11-13 02:26:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_should_stop [2021-11-13 02:26:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:26:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:26:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure loop_alloc [2021-11-13 02:26:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_alloc [2021-11-13 02:26:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure loop_make_request [2021-11-13 02:26:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_make_request [2021-11-13 02:26:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure __do_lo_send_write [2021-11-13 02:26:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_lo_send_write [2021-11-13 02:26:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure loop_get_status [2021-11-13 02:26:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_get_status [2021-11-13 02:26:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure loop_clr_fd [2021-11-13 02:26:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_clr_fd [2021-11-13 02:26:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:26:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure figure_loop_size [2021-11-13 02:26:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure figure_loop_size [2021-11-13 02:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl_by_bdev [2021-11-13 02:26:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl_by_bdev [2021-11-13 02:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:26:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:26:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-11-13 02:26:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-11-13 02:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 02:26:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 02:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-13 02:26:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-13 02:26:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:26:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:26:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-13 02:26:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-13 02:26:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 02:26:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 02:26:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_capacity [2021-11-13 02:26:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_capacity [2021-11-13 02:26:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_empty [2021-11-13 02:26:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_empty [2021-11-13 02:26:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-13 02:26:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-13 02:26:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure loop_free [2021-11-13 02:26:43,866 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_free [2021-11-13 02:26:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_none [2021-11-13 02:26:43,866 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_none [2021-11-13 02:26:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure bd_set_size [2021-11-13 02:26:43,867 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_set_size [2021-11-13 02:26:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-13 02:26:43,867 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-13 02:26:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_set_gfp_mask [2021-11-13 02:26:43,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_set_gfp_mask [2021-11-13 02:26:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure xor_init [2021-11-13 02:26:43,870 INFO L138 BoogieDeclarations]: Found implementation of procedure xor_init [2021-11-13 02:26:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure kmap [2021-11-13 02:26:43,870 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap [2021-11-13 02:26:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 02:26:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 02:26:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 02:26:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 02:26:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2021-11-13 02:26:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2021-11-13 02:26:43,871 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-13 02:26:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-13 02:26:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 02:26:43,872 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 02:26:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 02:26:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 02:26:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 02:26:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 02:26:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure __kmap_atomic [2021-11-13 02:26:43,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmap_atomic [2021-11-13 02:26:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-13 02:26:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-13 02:26:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:26:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 02:26:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 02:26:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure get_loop_size [2021-11-13 02:26:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure get_loop_size [2021-11-13 02:26:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:26:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2021-11-13 02:26:43,881 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2021-11-13 02:26:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure loop_set_status [2021-11-13 02:26:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_set_status [2021-11-13 02:26:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 02:26:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 02:26:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure lo_ioctl [2021-11-13 02:26:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure lo_ioctl [2021-11-13 02:26:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 02:26:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 02:26:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-13 02:26:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-13 02:26:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-13 02:26:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-13 02:26:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure loop_release_xfer [2021-11-13 02:26:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_release_xfer [2021-11-13 02:26:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure _cond_resched [2021-11-13 02:26:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure _cond_resched [2021-11-13 02:26:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure kunmap [2021-11-13 02:26:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kunmap [2021-11-13 02:26:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 02:26:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 02:26:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure loop_switch [2021-11-13 02:26:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_switch [2021-11-13 02:26:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure mapping_gfp_mask [2021-11-13 02:26:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mapping_gfp_mask [2021-11-13 02:26:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 02:26:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 02:26:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2021-11-13 02:26:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2021-11-13 02:26:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 02:26:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:26:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:26:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 02:26:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 02:26:55,995 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 02:27:03,865 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-11-13 02:27:03,865 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-11-13 02:27:03,957 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-13 02:27:03,957 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-13 02:27:10,111 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-13 02:27:10,111 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-13 02:27:12,685 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 02:27:12,687 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 02:27:20,888 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##72: assume !false; [2021-11-13 02:27:20,888 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##71: assume false; [2021-11-13 02:27:20,889 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2021-11-13 02:27:20,889 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2021-11-13 02:27:21,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:27:21,020 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 02:27:21,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:27:21 BoogieIcfgContainer [2021-11-13 02:27:21,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:27:21,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:27:21,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:27:21,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:27:21,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:26:40" (1/3) ... [2021-11-13 02:27:21,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:27:21, skipping insertion in model container [2021-11-13 02:27:21,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:43" (2/3) ... [2021-11-13 02:27:21,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:27:21, skipping insertion in model container [2021-11-13 02:27:21,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:27:21" (3/3) ... [2021-11-13 02:27:21,032 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-loop.ko.cil.out.i [2021-11-13 02:27:21,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:27:21,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:27:21,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:27:21,101 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:27:21,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:27:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 1065 states, 783 states have (on average 1.314176245210728) internal successors, (1029), 796 states have internal predecessors, (1029), 217 states have call successors, (217), 63 states have call predecessors, (217), 63 states have return successors, (217), 216 states have call predecessors, (217), 217 states have call successors, (217) [2021-11-13 02:27:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:27:21,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:21,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:21,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:21,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1951091590, now seen corresponding path program 1 times [2021-11-13 02:27:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:21,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242558394] [2021-11-13 02:27:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:21,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:21,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:21,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:21,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:27:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:22,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:27:22,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:22,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:22,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:22,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242558394] [2021-11-13 02:27:22,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242558394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:22,480 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:22,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:27:22,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35621771] [2021-11-13 02:27:22,482 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:22,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:27:22,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:27:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:22,518 INFO L87 Difference]: Start difference. First operand has 1065 states, 783 states have (on average 1.314176245210728) internal successors, (1029), 796 states have internal predecessors, (1029), 217 states have call successors, (217), 63 states have call predecessors, (217), 63 states have return successors, (217), 216 states have call predecessors, (217), 217 states have call successors, (217) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:26,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:27:28,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:27:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:30,704 INFO L93 Difference]: Finished difference Result 4168 states and 5880 transitions. [2021-11-13 02:27:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:27:30,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 02:27:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:30,751 INFO L225 Difference]: With dead ends: 4168 [2021-11-13 02:27:30,751 INFO L226 Difference]: Without dead ends: 3096 [2021-11-13 02:27:30,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:30,773 INFO L933 BasicCegarLoop]: 1916 mSDtfsCounter, 3912 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7090.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.94ms SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7766.11ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:30,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3912 Valid, 4293 Invalid, 884 Unknown, 0 Unchecked, 48.94ms Time], IncrementalHoareTripleChecker [435 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 7766.11ms Time] [2021-11-13 02:27:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2021-11-13 02:27:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 2040. [2021-11-13 02:27:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1497 states have (on average 1.3099532398129592) internal successors, (1961), 1518 states have internal predecessors, (1961), 421 states have call successors, (421), 122 states have call predecessors, (421), 121 states have return successors, (419), 416 states have call predecessors, (419), 419 states have call successors, (419) [2021-11-13 02:27:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2801 transitions. [2021-11-13 02:27:31,045 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2801 transitions. Word has length 11 [2021-11-13 02:27:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:31,045 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 2801 transitions. [2021-11-13 02:27:31,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2801 transitions. [2021-11-13 02:27:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:27:31,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:31,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:31,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:31,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:31,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:31,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1860787978, now seen corresponding path program 1 times [2021-11-13 02:27:31,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:31,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875276441] [2021-11-13 02:27:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:31,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:31,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:31,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:31,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:27:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:32,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:27:32,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:32,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:32,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:32,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875276441] [2021-11-13 02:27:32,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875276441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:32,458 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:32,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:27:32,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299623764] [2021-11-13 02:27:32,458 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:32,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:27:32,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:27:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:27:32,460 INFO L87 Difference]: Start difference. First operand 2040 states and 2801 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:32,601 INFO L93 Difference]: Finished difference Result 3113 states and 4261 transitions. [2021-11-13 02:27:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:27:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:27:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:32,620 INFO L225 Difference]: With dead ends: 3113 [2021-11-13 02:27:32,621 INFO L226 Difference]: Without dead ends: 2040 [2021-11-13 02:27:32,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:27:32,628 INFO L933 BasicCegarLoop]: 1439 mSDtfsCounter, 1437 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:32,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 1439 Invalid, 5 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 18.89ms Time] [2021-11-13 02:27:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-11-13 02:27:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2040. [2021-11-13 02:27:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1497 states have (on average 1.3072812291249165) internal successors, (1957), 1518 states have internal predecessors, (1957), 421 states have call successors, (421), 122 states have call predecessors, (421), 121 states have return successors, (419), 416 states have call predecessors, (419), 419 states have call successors, (419) [2021-11-13 02:27:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2797 transitions. [2021-11-13 02:27:32,801 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2797 transitions. Word has length 12 [2021-11-13 02:27:32,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:32,802 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 2797 transitions. [2021-11-13 02:27:32,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2797 transitions. [2021-11-13 02:27:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:27:32,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:32,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:32,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:33,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:33,027 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:33,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:33,028 INFO L85 PathProgramCache]: Analyzing trace with hash -126069323, now seen corresponding path program 1 times [2021-11-13 02:27:33,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:33,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869040656] [2021-11-13 02:27:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:33,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:33,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:33,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:33,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:27:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:34,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:27:34,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:34,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:34,224 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:34,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869040656] [2021-11-13 02:27:34,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869040656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:34,225 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:34,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 02:27:34,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381991723] [2021-11-13 02:27:34,226 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:34,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:27:34,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:27:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:34,227 INFO L87 Difference]: Start difference. First operand 2040 states and 2797 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:34,370 INFO L93 Difference]: Finished difference Result 3079 states and 4222 transitions. [2021-11-13 02:27:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:27:34,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:27:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:34,380 INFO L225 Difference]: With dead ends: 3079 [2021-11-13 02:27:34,380 INFO L226 Difference]: Without dead ends: 1044 [2021-11-13 02:27:34,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:34,401 INFO L933 BasicCegarLoop]: 1419 mSDtfsCounter, 1420 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:34,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 1419 Invalid, 7 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 25.57ms Time] [2021-11-13 02:27:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-11-13 02:27:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2021-11-13 02:27:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 768 states have (on average 1.2981770833333333) internal successors, (997), 779 states have internal predecessors, (997), 214 states have call successors, (214), 62 states have call predecessors, (214), 61 states have return successors, (212), 211 states have call predecessors, (212), 212 states have call successors, (212) [2021-11-13 02:27:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1423 transitions. [2021-11-13 02:27:34,481 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1423 transitions. Word has length 12 [2021-11-13 02:27:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:34,482 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 1423 transitions. [2021-11-13 02:27:34,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1423 transitions. [2021-11-13 02:27:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 02:27:34,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:34,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:34,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:34,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:34,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:34,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:34,708 INFO L85 PathProgramCache]: Analyzing trace with hash -918530819, now seen corresponding path program 1 times [2021-11-13 02:27:34,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:34,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577479583] [2021-11-13 02:27:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:34,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:34,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:34,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:34,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:27:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:35,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:27:35,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:35,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:36,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:36,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577479583] [2021-11-13 02:27:36,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577479583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:36,030 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:36,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:27:36,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937551466] [2021-11-13 02:27:36,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:36,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:27:36,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:27:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:27:36,032 INFO L87 Difference]: Start difference. First operand 1044 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:36,271 INFO L93 Difference]: Finished difference Result 3000 states and 4121 transitions. [2021-11-13 02:27:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:27:36,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-13 02:27:36,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:36,291 INFO L225 Difference]: With dead ends: 3000 [2021-11-13 02:27:36,291 INFO L226 Difference]: Without dead ends: 2007 [2021-11-13 02:27:36,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:27:36,305 INFO L933 BasicCegarLoop]: 1748 mSDtfsCounter, 1404 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.16ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:36,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 3088 Invalid, 10 Unknown, 0 Unchecked, 13.60ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 44.16ms Time] [2021-11-13 02:27:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-11-13 02:27:36,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2004. [2021-11-13 02:27:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1471 states have (on average 1.301835486063902) internal successors, (1915), 1491 states have internal predecessors, (1915), 413 states have call successors, (413), 120 states have call predecessors, (413), 119 states have return successors, (416), 409 states have call predecessors, (416), 411 states have call successors, (416) [2021-11-13 02:27:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2744 transitions. [2021-11-13 02:27:36,461 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2744 transitions. Word has length 16 [2021-11-13 02:27:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:36,461 INFO L470 AbstractCegarLoop]: Abstraction has 2004 states and 2744 transitions. [2021-11-13 02:27:36,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2744 transitions. [2021-11-13 02:27:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 02:27:36,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:36,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:36,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:36,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:36,700 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash -15146398, now seen corresponding path program 1 times [2021-11-13 02:27:36,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:36,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521550150] [2021-11-13 02:27:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:36,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:36,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:36,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:36,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:27:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:37,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:27:37,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:38,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:38,458 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:38,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521550150] [2021-11-13 02:27:38,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521550150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:38,458 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:38,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:27:38,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025708782] [2021-11-13 02:27:38,459 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:38,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:27:38,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:27:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:27:38,460 INFO L87 Difference]: Start difference. First operand 2004 states and 2744 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 02:27:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:38,749 INFO L93 Difference]: Finished difference Result 3930 states and 5396 transitions. [2021-11-13 02:27:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:27:38,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-11-13 02:27:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:38,766 INFO L225 Difference]: With dead ends: 3930 [2021-11-13 02:27:38,767 INFO L226 Difference]: Without dead ends: 1987 [2021-11-13 02:27:38,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:27:38,780 INFO L933 BasicCegarLoop]: 1421 mSDtfsCounter, 3 mSDsluCounter, 4255 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5676 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.03ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:38,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5676 Invalid, 14 Unknown, 0 Unchecked, 12.60ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 55.03ms Time] [2021-11-13 02:27:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-11-13 02:27:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1987. [2021-11-13 02:27:38,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1460 states have (on average 1.3020547945205478) internal successors, (1901), 1480 states have internal predecessors, (1901), 409 states have call successors, (409), 118 states have call predecessors, (409), 117 states have return successors, (412), 405 states have call predecessors, (412), 407 states have call successors, (412) [2021-11-13 02:27:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2722 transitions. [2021-11-13 02:27:38,921 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2722 transitions. Word has length 51 [2021-11-13 02:27:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:38,922 INFO L470 AbstractCegarLoop]: Abstraction has 1987 states and 2722 transitions. [2021-11-13 02:27:38,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 02:27:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2722 transitions. [2021-11-13 02:27:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 02:27:38,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:38,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:38,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:39,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:39,146 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:39,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:39,146 INFO L85 PathProgramCache]: Analyzing trace with hash 236681878, now seen corresponding path program 1 times [2021-11-13 02:27:39,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:39,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840394762] [2021-11-13 02:27:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:39,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:39,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:39,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:39,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:27:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:40,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:27:40,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:40,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:41,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:41,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840394762] [2021-11-13 02:27:41,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840394762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:41,192 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:41,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:27:41,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467807001] [2021-11-13 02:27:41,192 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:41,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:27:41,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:41,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:27:41,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:27:41,194 INFO L87 Difference]: Start difference. First operand 1987 states and 2722 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 02:27:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:41,815 INFO L93 Difference]: Finished difference Result 3928 states and 5394 transitions. [2021-11-13 02:27:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:27:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2021-11-13 02:27:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:41,833 INFO L225 Difference]: With dead ends: 3928 [2021-11-13 02:27:41,833 INFO L226 Difference]: Without dead ends: 1994 [2021-11-13 02:27:41,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:27:41,845 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 348 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 381.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 3978 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.41ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 422.02ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:41,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 3978 Invalid, 100 Unknown, 0 Unchecked, 12.41ms Time], IncrementalHoareTripleChecker [52 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 422.02ms Time] [2021-11-13 02:27:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-11-13 02:27:41,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1994. [2021-11-13 02:27:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1465 states have (on average 1.301023890784983) internal successors, (1906), 1485 states have internal predecessors, (1906), 411 states have call successors, (411), 118 states have call predecessors, (411), 117 states have return successors, (414), 407 states have call predecessors, (414), 409 states have call successors, (414) [2021-11-13 02:27:41,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2731 transitions. [2021-11-13 02:27:41,984 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2731 transitions. Word has length 63 [2021-11-13 02:27:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:41,985 INFO L470 AbstractCegarLoop]: Abstraction has 1994 states and 2731 transitions. [2021-11-13 02:27:41,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 02:27:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2731 transitions. [2021-11-13 02:27:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-13 02:27:41,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:41,989 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:42,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:42,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:42,202 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:42,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -651991616, now seen corresponding path program 1 times [2021-11-13 02:27:42,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:42,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356952592] [2021-11-13 02:27:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:42,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:42,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:42,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:42,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:27:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:43,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:27:43,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:27:44,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 02:27:44,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:44,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356952592] [2021-11-13 02:27:44,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356952592] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:27:44,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:27:44,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-13 02:27:44,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367096581] [2021-11-13 02:27:44,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:44,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:27:44,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:44,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:27:44,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:27:44,841 INFO L87 Difference]: Start difference. First operand 1994 states and 2731 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 02:27:46,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:27:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:46,773 INFO L93 Difference]: Finished difference Result 3980 states and 5454 transitions. [2021-11-13 02:27:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:27:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2021-11-13 02:27:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:46,792 INFO L225 Difference]: With dead ends: 3980 [2021-11-13 02:27:46,792 INFO L226 Difference]: Without dead ends: 1983 [2021-11-13 02:27:46,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:27:46,804 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 0 mSDsluCounter, 4220 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1764.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1793.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:46,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5630 Invalid, 13 Unknown, 0 Unchecked, 13.46ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1793.48ms Time] [2021-11-13 02:27:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2021-11-13 02:27:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1983. [2021-11-13 02:27:46,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1458 states have (on average 1.300411522633745) internal successors, (1896), 1477 states have internal predecessors, (1896), 409 states have call successors, (409), 116 states have call predecessors, (409), 115 states have return successors, (412), 405 states have call predecessors, (412), 407 states have call successors, (412) [2021-11-13 02:27:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2717 transitions. [2021-11-13 02:27:47,004 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2717 transitions. Word has length 104 [2021-11-13 02:27:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:47,007 INFO L470 AbstractCegarLoop]: Abstraction has 1983 states and 2717 transitions. [2021-11-13 02:27:47,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 02:27:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2717 transitions. [2021-11-13 02:27:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-13 02:27:47,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:47,017 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:27:47,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:47,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:47,238 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:47,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash -833911722, now seen corresponding path program 1 times [2021-11-13 02:27:47,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:47,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581835305] [2021-11-13 02:27:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:47,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:47,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:47,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:27:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:48,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 02:27:48,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-13 02:27:49,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-13 02:27:51,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:51,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581835305] [2021-11-13 02:27:51,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581835305] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:27:51,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:27:51,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-11-13 02:27:51,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456720196] [2021-11-13 02:27:51,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:51,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:27:51,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:51,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:27:51,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:27:51,256 INFO L87 Difference]: Start difference. First operand 1983 states and 2717 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 02:27:53,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:27:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:53,388 INFO L93 Difference]: Finished difference Result 3963 states and 5439 transitions. [2021-11-13 02:27:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:27:53,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 157 [2021-11-13 02:27:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:53,432 INFO L225 Difference]: With dead ends: 3963 [2021-11-13 02:27:53,432 INFO L226 Difference]: Without dead ends: 1987 [2021-11-13 02:27:53,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:27:53,440 INFO L933 BasicCegarLoop]: 1397 mSDtfsCounter, 6 mSDsluCounter, 8370 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1645.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9767 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1669.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:53,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 9767 Invalid, 39 Unknown, 0 Unchecked, 19.86ms Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 1669.80ms Time] [2021-11-13 02:27:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-11-13 02:27:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1985. [2021-11-13 02:27:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1459 states have (on average 1.3002056202878685) internal successors, (1897), 1479 states have internal predecessors, (1897), 409 states have call successors, (409), 116 states have call predecessors, (409), 116 states have return successors, (417), 405 states have call predecessors, (417), 407 states have call successors, (417) [2021-11-13 02:27:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2723 transitions. [2021-11-13 02:27:53,577 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2723 transitions. Word has length 157 [2021-11-13 02:27:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:53,577 INFO L470 AbstractCegarLoop]: Abstraction has 1985 states and 2723 transitions. [2021-11-13 02:27:53,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 02:27:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2723 transitions. [2021-11-13 02:27:53,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-13 02:27:53,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:53,583 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 02:27:53,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:53,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:27:53,806 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2392300, now seen corresponding path program 1 times [2021-11-13 02:27:53,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:27:53,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241761810] [2021-11-13 02:27:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:53,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:27:53,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:27:53,810 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:27:53,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:27:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:55,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 02:27:55,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:27:56,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 02:27:58,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:27:58,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241761810] [2021-11-13 02:27:58,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241761810] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:27:58,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:27:58,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2021-11-13 02:27:58,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032641125] [2021-11-13 02:27:58,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:58,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:27:58,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:27:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:27:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:27:58,381 INFO L87 Difference]: Start difference. First operand 1985 states and 2723 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:28:00,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:02,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:04,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:05,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:07,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:08,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:10,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:10,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:10,482 INFO L93 Difference]: Finished difference Result 3963 states and 5442 transitions. [2021-11-13 02:28:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:28:10,484 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 171 [2021-11-13 02:28:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:10,499 INFO L225 Difference]: With dead ends: 3963 [2021-11-13 02:28:10,499 INFO L226 Difference]: Without dead ends: 1987 [2021-11-13 02:28:10,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:28:10,511 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 60 mSDsluCounter, 12488 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11092.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 13881 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.41ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11293.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:10,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 13881 Invalid, 144 Unknown, 0 Unchecked, 26.41ms Time], IncrementalHoareTripleChecker [25 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 11293.80ms Time] [2021-11-13 02:28:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-11-13 02:28:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1985. [2021-11-13 02:28:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1459 states have (on average 1.3002056202878685) internal successors, (1897), 1479 states have internal predecessors, (1897), 409 states have call successors, (409), 116 states have call predecessors, (409), 116 states have return successors, (416), 405 states have call predecessors, (416), 407 states have call successors, (416) [2021-11-13 02:28:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2722 transitions. [2021-11-13 02:28:10,727 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2722 transitions. Word has length 171 [2021-11-13 02:28:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:10,728 INFO L470 AbstractCegarLoop]: Abstraction has 1985 states and 2722 transitions. [2021-11-13 02:28:10,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:28:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2722 transitions. [2021-11-13 02:28:10,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-13 02:28:10,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:10,733 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 02:28:10,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:10,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:10,946 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:28:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:10,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1317422294, now seen corresponding path program 2 times [2021-11-13 02:28:10,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:10,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299372723] [2021-11-13 02:28:10,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:28:10,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:10,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:10,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:10,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:28:11,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 02:28:11,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:28:12,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:28:12,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-13 02:28:12,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-13 02:28:13,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:13,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299372723] [2021-11-13 02:28:13,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299372723] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:13,035 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:28:13,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:28:13,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775295605] [2021-11-13 02:28:13,035 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:13,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:28:13,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:28:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:28:13,037 INFO L87 Difference]: Start difference. First operand 1985 states and 2722 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 6 states have internal predecessors, (97), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-13 02:28:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:15,325 INFO L93 Difference]: Finished difference Result 4467 states and 6253 transitions. [2021-11-13 02:28:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:28:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 6 states have internal predecessors, (97), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 185 [2021-11-13 02:28:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:15,347 INFO L225 Difference]: With dead ends: 4467 [2021-11-13 02:28:15,347 INFO L226 Difference]: Without dead ends: 2543 [2021-11-13 02:28:15,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:28:15,357 INFO L933 BasicCegarLoop]: 1663 mSDtfsCounter, 605 mSDsluCounter, 9114 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1764.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 10777 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.08ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1924.68ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:15,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 10777 Invalid, 417 Unknown, 0 Unchecked, 21.08ms Time], IncrementalHoareTripleChecker [94 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1924.68ms Time] [2021-11-13 02:28:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2021-11-13 02:28:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2313. [2021-11-13 02:28:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1697 states have (on average 1.3087802003535651) internal successors, (2221), 1727 states have internal predecessors, (2221), 493 states have call successors, (493), 120 states have call predecessors, (493), 122 states have return successors, (506), 485 states have call predecessors, (506), 491 states have call successors, (506) [2021-11-13 02:28:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3220 transitions. [2021-11-13 02:28:15,523 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3220 transitions. Word has length 185 [2021-11-13 02:28:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:15,524 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3220 transitions. [2021-11-13 02:28:15,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 6 states have internal predecessors, (97), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-13 02:28:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3220 transitions. [2021-11-13 02:28:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 02:28:15,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:15,529 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 02:28:15,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:15,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:15,754 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:28:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:15,755 INFO L85 PathProgramCache]: Analyzing trace with hash -396459010, now seen corresponding path program 1 times [2021-11-13 02:28:15,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:15,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299195630] [2021-11-13 02:28:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:15,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:15,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:15,757 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:15,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:28:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:17,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 02:28:17,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:28:18,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-13 02:28:19,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:19,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299195630] [2021-11-13 02:28:19,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299195630] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:28:19,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:28:19,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-13 02:28:19,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669349490] [2021-11-13 02:28:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:19,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:28:19,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:28:19,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:28:19,193 INFO L87 Difference]: Start difference. First operand 2313 states and 3220 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 02:28:20,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:20,923 INFO L93 Difference]: Finished difference Result 4619 states and 6436 transitions. [2021-11-13 02:28:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:28:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 187 [2021-11-13 02:28:20,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:20,990 INFO L225 Difference]: With dead ends: 4619 [2021-11-13 02:28:20,991 INFO L226 Difference]: Without dead ends: 2315 [2021-11-13 02:28:20,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:28:21,000 INFO L933 BasicCegarLoop]: 1399 mSDtfsCounter, 1 mSDsluCounter, 5589 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1527.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6988 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1535.93ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:21,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6988 Invalid, 16 Unknown, 0 Unchecked, 9.52ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 1535.93ms Time] [2021-11-13 02:28:21,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-11-13 02:28:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2313. [2021-11-13 02:28:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1697 states have (on average 1.3087802003535651) internal successors, (2221), 1727 states have internal predecessors, (2221), 493 states have call successors, (493), 120 states have call predecessors, (493), 122 states have return successors, (505), 485 states have call predecessors, (505), 491 states have call successors, (505) [2021-11-13 02:28:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3219 transitions. [2021-11-13 02:28:21,162 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3219 transitions. Word has length 187 [2021-11-13 02:28:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:21,163 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3219 transitions. [2021-11-13 02:28:21,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 02:28:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3219 transitions. [2021-11-13 02:28:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-13 02:28:21,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:21,168 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:21,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:21,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:21,382 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:28:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:21,382 INFO L85 PathProgramCache]: Analyzing trace with hash 364360298, now seen corresponding path program 1 times [2021-11-13 02:28:21,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:21,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131014070] [2021-11-13 02:28:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:21,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:21,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:21,385 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:21,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:28:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:23,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:28:23,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:28:23,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-11-13 02:28:24,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:24,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131014070] [2021-11-13 02:28:24,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131014070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:28:24,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [313383146] [2021-11-13 02:28:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:24,622 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:28:24,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:28:24,623 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:28:24,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-13 02:28:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:26,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:28:26,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:28:27,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-11-13 02:28:27,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [313383146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:28:27,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883380143] [2021-11-13 02:28:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:27,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:28:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:28:27,738 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:28:27,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 02:28:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:28,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:28:28,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-13 02:28:30,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-13 02:28:31,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883380143] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:28:31,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 02:28:31,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 6, 6, 3] total 14 [2021-11-13 02:28:31,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76021157] [2021-11-13 02:28:31,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:31,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:28:31,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:28:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:28:31,365 INFO L87 Difference]: Start difference. First operand 2313 states and 3219 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 02:28:33,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:39,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:39,507 INFO L93 Difference]: Finished difference Result 4610 states and 6474 transitions. [2021-11-13 02:28:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:28:39,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 192 [2021-11-13 02:28:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:39,558 INFO L225 Difference]: With dead ends: 4610 [2021-11-13 02:28:39,559 INFO L226 Difference]: Without dead ends: 4607 [2021-11-13 02:28:39,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1147 GetRequests, 1134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:28:39,563 INFO L933 BasicCegarLoop]: 2968 mSDtfsCounter, 2723 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7091.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 5388 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.30ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7786.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:39,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2723 Valid, 5388 Invalid, 886 Unknown, 0 Unchecked, 19.30ms Time], IncrementalHoareTripleChecker [5 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 7786.00ms Time] [2021-11-13 02:28:39,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2021-11-13 02:28:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4534. [2021-11-13 02:28:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 3322 states have (on average 1.3148705599036725) internal successors, (4368), 3382 states have internal predecessors, (4368), 973 states have call successors, (973), 232 states have call predecessors, (973), 238 states have return successors, (1057), 959 states have call predecessors, (1057), 971 states have call successors, (1057) [2021-11-13 02:28:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 6398 transitions. [2021-11-13 02:28:39,953 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 6398 transitions. Word has length 192 [2021-11-13 02:28:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:39,954 INFO L470 AbstractCegarLoop]: Abstraction has 4534 states and 6398 transitions. [2021-11-13 02:28:39,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 02:28:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 6398 transitions. [2021-11-13 02:28:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-13 02:28:39,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:39,960 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:40,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:40,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:40,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:40,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:28:40,583 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:28:40,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:40,583 INFO L85 PathProgramCache]: Analyzing trace with hash 583215016, now seen corresponding path program 1 times [2021-11-13 02:28:40,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:40,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143644175] [2021-11-13 02:28:40,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:40,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:40,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:40,585 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:40,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 02:28:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:42,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:28:42,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:28:43,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-11-13 02:28:43,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:28:43,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143644175] [2021-11-13 02:28:43,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143644175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:28:43,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1575543354] [2021-11-13 02:28:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:43,864 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:28:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:28:43,865 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:28:43,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-13 02:28:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:28:44,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 02:28:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:28:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-13 02:28:45,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:28:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-13 02:28:46,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1575543354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:28:46,332 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:28:46,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6] total 16 [2021-11-13 02:28:46,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767190419] [2021-11-13 02:28:46,333 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:28:46,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:28:46,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:28:46,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:28:46,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:28:46,334 INFO L87 Difference]: Start difference. First operand 4534 states and 6398 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 02:28:48,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:50,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:52,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:28:58,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:28:58,508 INFO L93 Difference]: Finished difference Result 12288 states and 17410 transitions. [2021-11-13 02:28:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:28:58,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 192 [2021-11-13 02:28:58,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:28:58,556 INFO L225 Difference]: With dead ends: 12288 [2021-11-13 02:28:58,557 INFO L226 Difference]: Without dead ends: 8919 [2021-11-13 02:28:58,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-11-13 02:28:58,607 INFO L933 BasicCegarLoop]: 2725 mSDtfsCounter, 1413 mSDsluCounter, 12945 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 48 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10390.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 15670 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.30ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10983.62ms IncrementalHoareTripleChecker+Time [2021-11-13 02:28:58,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1435 Valid, 15670 Invalid, 650 Unknown, 0 Unchecked, 55.30ms Time], IncrementalHoareTripleChecker [48 Valid, 599 Invalid, 3 Unknown, 0 Unchecked, 10983.62ms Time] [2021-11-13 02:28:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8919 states. [2021-11-13 02:28:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8919 to 8853. [2021-11-13 02:28:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8853 states, 6473 states have (on average 1.3162366754209796) internal successors, (8520), 6595 states have internal predecessors, (8520), 1902 states have call successors, (1902), 458 states have call predecessors, (1902), 477 states have return successors, (2093), 1877 states have call predecessors, (2093), 1900 states have call successors, (2093) [2021-11-13 02:28:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 12515 transitions. [2021-11-13 02:28:59,343 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 12515 transitions. Word has length 192 [2021-11-13 02:28:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:28:59,344 INFO L470 AbstractCegarLoop]: Abstraction has 8853 states and 12515 transitions. [2021-11-13 02:28:59,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 02:28:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 12515 transitions. [2021-11-13 02:28:59,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 02:28:59,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:28:59,351 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:28:59,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:59,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:28:59,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:28:59,763 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:28:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:28:59,763 INFO L85 PathProgramCache]: Analyzing trace with hash 200176686, now seen corresponding path program 1 times [2021-11-13 02:28:59,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:28:59,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413352566] [2021-11-13 02:28:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:28:59,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:28:59,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:28:59,766 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:28:59,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 02:29:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:01,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:29:01,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:29:02,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:29:03,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:03,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413352566] [2021-11-13 02:29:03,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413352566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:29:03,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [917738417] [2021-11-13 02:29:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:03,471 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:29:03,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:29:03,472 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:29:03,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-13 02:29:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:05,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:29:05,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:29:06,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:29:06,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [917738417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:29:06,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559430788] [2021-11-13 02:29:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:06,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:29:06,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:29:06,889 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:29:06,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 02:29:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:07,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:29:07,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:29:08,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-13 02:29:09,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559430788] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:29:09,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:29:09,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-13 02:29:09,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962472967] [2021-11-13 02:29:09,138 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:29:09,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:29:09,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:29:09,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:29:09,140 INFO L87 Difference]: Start difference. First operand 8853 states and 12515 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-13 02:29:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:29:10,911 INFO L93 Difference]: Finished difference Result 17681 states and 25010 transitions. [2021-11-13 02:29:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:29:10,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 200 [2021-11-13 02:29:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:29:10,956 INFO L225 Difference]: With dead ends: 17681 [2021-11-13 02:29:10,956 INFO L226 Difference]: Without dead ends: 8877 [2021-11-13 02:29:10,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1186 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:29:10,996 INFO L933 BasicCegarLoop]: 1416 mSDtfsCounter, 204 mSDsluCounter, 6483 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 923.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 7899 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.87ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 999.56ms IncrementalHoareTripleChecker+Time [2021-11-13 02:29:10,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 7899 Invalid, 206 Unknown, 0 Unchecked, 10.87ms Time], IncrementalHoareTripleChecker [36 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 999.56ms Time] [2021-11-13 02:29:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2021-11-13 02:29:11,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 8877. [2021-11-13 02:29:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8877 states, 6489 states have (on average 1.3154569271074126) internal successors, (8536), 6611 states have internal predecessors, (8536), 1910 states have call successors, (1910), 458 states have call predecessors, (1910), 477 states have return successors, (2101), 1885 states have call predecessors, (2101), 1908 states have call successors, (2101) [2021-11-13 02:29:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 12547 transitions. [2021-11-13 02:29:11,926 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 12547 transitions. Word has length 200 [2021-11-13 02:29:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:29:11,926 INFO L470 AbstractCegarLoop]: Abstraction has 8877 states and 12547 transitions. [2021-11-13 02:29:11,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-13 02:29:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 12547 transitions. [2021-11-13 02:29:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-13 02:29:11,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:11,940 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:29:11,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-13 02:29:12,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:12,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-13 02:29:12,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:29:12,562 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1131679147, now seen corresponding path program 1 times [2021-11-13 02:29:12,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:12,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777170783] [2021-11-13 02:29:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:12,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:12,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:12,566 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:12,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 02:29:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:16,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:29:16,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2021-11-13 02:29:18,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2021-11-13 02:29:20,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:20,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777170783] [2021-11-13 02:29:20,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777170783] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:29:20,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911082538] [2021-11-13 02:29:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:20,721 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:29:20,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:29:20,737 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:29:20,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-13 02:29:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:21,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:29:21,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2214 trivial. 0 not checked. [2021-11-13 02:29:23,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2214 trivial. 0 not checked. [2021-11-13 02:29:24,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [911082538] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:29:24,824 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:29:24,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10, 10] total 20 [2021-11-13 02:29:24,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034394227] [2021-11-13 02:29:24,825 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:29:24,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:29:24,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:29:24,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:29:24,828 INFO L87 Difference]: Start difference. First operand 8877 states and 12547 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 02:29:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:29:25,684 INFO L93 Difference]: Finished difference Result 19461 states and 28057 transitions. [2021-11-13 02:29:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:29:25,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 470 [2021-11-13 02:29:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:29:25,762 INFO L225 Difference]: With dead ends: 19461 [2021-11-13 02:29:25,763 INFO L226 Difference]: Without dead ends: 10667 [2021-11-13 02:29:25,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1858 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:29:25,804 INFO L933 BasicCegarLoop]: 1579 mSDtfsCounter, 314 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 351.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:29:25,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 3066 Invalid, 83 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [41 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 351.27ms Time] [2021-11-13 02:29:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10667 states. [2021-11-13 02:29:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10667 to 10662. [2021-11-13 02:29:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10662 states, 7810 states have (on average 1.3373879641485276) internal successors, (10445), 7996 states have internal predecessors, (10445), 2374 states have call successors, (2374), 458 states have call predecessors, (2374), 477 states have return successors, (2753), 2301 states have call predecessors, (2753), 2372 states have call successors, (2753) [2021-11-13 02:29:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10662 states to 10662 states and 15572 transitions. [2021-11-13 02:29:26,800 INFO L78 Accepts]: Start accepts. Automaton has 10662 states and 15572 transitions. Word has length 470 [2021-11-13 02:29:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:29:26,808 INFO L470 AbstractCegarLoop]: Abstraction has 10662 states and 15572 transitions. [2021-11-13 02:29:26,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 02:29:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 10662 states and 15572 transitions. [2021-11-13 02:29:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-11-13 02:29:26,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:26,818 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:29:26,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:27,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:27,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:29:27,234 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:27,235 INFO L85 PathProgramCache]: Analyzing trace with hash 198601690, now seen corresponding path program 2 times [2021-11-13 02:29:27,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:27,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218461818] [2021-11-13 02:29:27,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:29:27,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:27,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:27,240 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:27,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 02:29:52,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:29:52,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:29:53,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2255 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:29:53,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2021-11-13 02:29:55,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2021-11-13 02:29:57,395 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:57,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218461818] [2021-11-13 02:29:57,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218461818] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:29:57,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1426381331] [2021-11-13 02:29:57,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:29:57,396 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:29:57,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:29:57,397 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:29:57,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-13 02:31:41,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:31:41,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:31:41,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2255 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:31:41,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:31:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2021-11-13 02:31:43,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:31:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2021-11-13 02:31:45,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1426381331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:31:45,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458031658] [2021-11-13 02:31:45,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:31:45,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:31:45,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:31:45,104 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:31:45,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-13 02:32:27,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:32:27,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:32:27,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 2255 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:32:27,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:32:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2021-11-13 02:32:29,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:32:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2021-11-13 02:32:30,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458031658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:32:30,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:32:30,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-13 02:32:30,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456921551] [2021-11-13 02:32:30,638 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:32:30,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 02:32:30,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:32:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 02:32:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-11-13 02:32:30,641 INFO L87 Difference]: Start difference. First operand 10662 states and 15572 transitions. Second operand has 18 states, 18 states have (on average 8.0) internal successors, (144), 18 states have internal predecessors, (144), 14 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2021-11-13 02:32:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:32:33,856 INFO L93 Difference]: Finished difference Result 21263 states and 31074 transitions. [2021-11-13 02:32:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:32:33,857 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 18 states have internal predecessors, (144), 14 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) Word has length 472 [2021-11-13 02:32:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:32:33,929 INFO L225 Difference]: With dead ends: 21263 [2021-11-13 02:32:33,929 INFO L226 Difference]: Without dead ends: 10674 [2021-11-13 02:32:33,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2827 GetRequests, 2810 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:32:33,981 INFO L933 BasicCegarLoop]: 1436 mSDtfsCounter, 405 mSDsluCounter, 10862 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2396.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 12298 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.83ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2556.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:32:33,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 12298 Invalid, 599 Unknown, 0 Unchecked, 14.83ms Time], IncrementalHoareTripleChecker [108 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 2556.23ms Time] [2021-11-13 02:32:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10674 states. [2021-11-13 02:32:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10674 to 10674. [2021-11-13 02:32:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10674 states, 7818 states have (on average 1.3370427219237657) internal successors, (10453), 8004 states have internal predecessors, (10453), 2378 states have call successors, (2378), 458 states have call predecessors, (2378), 477 states have return successors, (2757), 2305 states have call predecessors, (2757), 2376 states have call successors, (2757) [2021-11-13 02:32:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10674 states to 10674 states and 15588 transitions. [2021-11-13 02:32:34,939 INFO L78 Accepts]: Start accepts. Automaton has 10674 states and 15588 transitions. Word has length 472 [2021-11-13 02:32:34,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:32:34,940 INFO L470 AbstractCegarLoop]: Abstraction has 10674 states and 15588 transitions. [2021-11-13 02:32:34,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.0) internal successors, (144), 18 states have internal predecessors, (144), 14 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2021-11-13 02:32:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 10674 states and 15588 transitions. [2021-11-13 02:32:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-11-13 02:32:34,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:32:34,951 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:32:35,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:35,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:35,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-13 02:32:35,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:32:35,578 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:32:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:32:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash 627148464, now seen corresponding path program 3 times [2021-11-13 02:32:35,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:32:35,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144968163] [2021-11-13 02:32:35,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:32:35,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:32:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:32:35,584 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:32:35,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a28e35a-0d66-40b4-8982-ddf4a3230d09/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process