./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/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 32bit --witnessprinter.graph.data.programhash ab726a473f6c04dd764d313dbb24ea777126388718edbc0b40477fad14a8692b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:46:51,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:46:51,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:46:51,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:46:51,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:46:51,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:46:51,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:46:51,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:46:51,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:46:51,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:46:51,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:46:51,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:46:51,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:46:51,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:46:52,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:46:52,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:46:52,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:46:52,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:46:52,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:46:52,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:46:52,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:46:52,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:46:52,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:46:52,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:46:52,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:46:52,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:46:52,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:46:52,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:46:52,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:46:52,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:46:52,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:46:52,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:46:52,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:46:52,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:46:52,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:46:52,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:46:52,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:46:52,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:46:52,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:46:52,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:46:52,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:46:52,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:46:52,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:46:52,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:46:52,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:46:52,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:46:52,066 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:46:52,066 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:46:52,067 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:46:52,067 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:46:52,067 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:46:52,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:46:52,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:46:52,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:46:52,068 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:46:52,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:46:52,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:46:52,069 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:46:52,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:46:52,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:46:52,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:46:52,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:46:52,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:46:52,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:46:52,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:46:52,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:46:52,072 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:46:52,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:46:52,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:46:52,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:46:52,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:46:52,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:46:52,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:46:52,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:46:52,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:46:52,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:46:52,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:46:52,083 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:46:52,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:46:52,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:46:52,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:46:52,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:46:52,084 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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab726a473f6c04dd764d313dbb24ea777126388718edbc0b40477fad14a8692b [2021-11-12 23:46:52,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:46:52,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:46:52,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:46:52,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:46:52,382 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:46:52,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c [2021-11-12 23:46:52,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data/46d3b875a/87d7f5f5b421483fa1f6a694c9f84d4f/FLAGf310bda87 [2021-11-12 23:46:53,538 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:46:53,540 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c [2021-11-12 23:46:53,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data/46d3b875a/87d7f5f5b421483fa1f6a694c9f84d4f/FLAGf310bda87 [2021-11-12 23:46:53,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data/46d3b875a/87d7f5f5b421483fa1f6a694c9f84d4f [2021-11-12 23:46:53,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:46:53,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:46:53,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:53,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:46:53,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:46:53,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:53" (1/1) ... [2021-11-12 23:46:53,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d31b4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:53, skipping insertion in model container [2021-11-12 23:46:53,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:53" (1/1) ... [2021-11-12 23:46:53,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:46:54,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:46:54,869 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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c[84365,84378] [2021-11-12 23:46:55,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:46:55,384 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) [2021-11-12 23:46:55,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10be19c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:55, skipping insertion in model container [2021-11-12 23:46:55,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:55,385 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:46:55,387 INFO L158 Benchmark]: Toolchain (without parser) took 1446.44ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 60.1MB in the beginning and 65.6MB in the end (delta: -5.5MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2021-11-12 23:46:55,388 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:46:55,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1440.71ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 59.8MB in the beginning and 65.6MB in the end (delta: -5.8MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2021-11-12 23:46:55,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1440.71ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 59.8MB in the beginning and 65.6MB in the end (delta: -5.8MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2181]: 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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/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 32bit --witnessprinter.graph.data.programhash ab726a473f6c04dd764d313dbb24ea777126388718edbc0b40477fad14a8692b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:46:57,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:46:57,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:46:57,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:46:57,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:46:57,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:46:57,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:46:57,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:46:57,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:46:57,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:46:57,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:46:57,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:46:57,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:46:57,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:46:57,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:46:57,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:46:57,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:46:57,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:46:57,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:46:57,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:46:57,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:46:57,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:46:57,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:46:57,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:46:57,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:46:57,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:46:57,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:46:57,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:46:57,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:46:57,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:46:57,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:46:57,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:46:57,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:46:57,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:46:57,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:46:57,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:46:57,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:46:57,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:46:57,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:46:57,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:46:57,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:46:57,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:46:57,790 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:46:57,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:46:57,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:46:57,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:46:57,792 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:46:57,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:46:57,792 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:46:57,792 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:46:57,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:46:57,793 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:46:57,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:46:57,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:46:57,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:46:57,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:46:57,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:46:57,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:46:57,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:46:57,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:46:57,798 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:46:57,799 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:46:57,799 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:46:57,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:46:57,799 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:46:57,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:46:57,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:46:57,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:46:57,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:46:57,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:46:57,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:46:57,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:46:57,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:46:57,802 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:46:57,802 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:46:57,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:46:57,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:46:57,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:46:57,804 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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab726a473f6c04dd764d313dbb24ea777126388718edbc0b40477fad14a8692b [2021-11-12 23:46:58,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:46:58,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:46:58,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:46:58,212 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:46:58,215 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:46:58,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c [2021-11-12 23:46:58,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data/d51d890d1/65aab59c4d1549cd8ab61125bbafd335/FLAGe51db12cf [2021-11-12 23:46:59,281 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:46:59,282 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c [2021-11-12 23:46:59,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data/d51d890d1/65aab59c4d1549cd8ab61125bbafd335/FLAGe51db12cf [2021-11-12 23:46:59,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/data/d51d890d1/65aab59c4d1549cd8ab61125bbafd335 [2021-11-12 23:46:59,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:46:59,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:46:59,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:46:59,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:46:59,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:46:59,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:59" (1/1) ... [2021-11-12 23:46:59,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6baaed18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:46:59, skipping insertion in model container [2021-11-12 23:46:59,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:46:59" (1/1) ... [2021-11-12 23:46:59,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:46:59,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:47:00,807 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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c[84365,84378] [2021-11-12 23:47:01,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:47:01,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:47:01,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:47:01,507 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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c[84365,84378] [2021-11-12 23:47:01,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:47:01,845 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:47:01,947 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_cfc6b672-5fd3-423f-b794-9b3cefa6f301/sv-benchmarks/c/ntdrivers/diskperf.i.cil-2.c[84365,84378] [2021-11-12 23:47:02,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:47:02,211 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:47:02,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02 WrapperNode [2021-11-12 23:47:02,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:47:02,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:47:02,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:47:02,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:47:02,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:47:02,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:47:02,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:47:02,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:47:02,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:47:02,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:47:02,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:47:02,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:47:02,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (1/1) ... [2021-11-12 23:47:02,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:47:02,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:47:02,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:47:02,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:47:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:47:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:47:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:47:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:47:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:47:02,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:47:03,000 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2021-11-12 23:47:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2021-11-12 23:47:03,000 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2021-11-12 23:47:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2021-11-12 23:47:03,000 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-11-12 23:47:03,000 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-11-12 23:47:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfAddCounters [2021-11-12 23:47:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfAddCounters [2021-11-12 23:47:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:47:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:47:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2021-11-12 23:47:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2021-11-12 23:47:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2021-11-12 23:47:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2021-11-12 23:47:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:47:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-11-12 23:47:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-11-12 23:47:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:47:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:47:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:47:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:47:03,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:47:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-11-12 23:47:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-11-12 23:47:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:47:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure KeQuerySystemTime [2021-11-12 23:47:03,004 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQuerySystemTime [2021-11-12 23:47:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:47:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:47:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-11-12 23:47:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-11-12 23:47:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:47:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:47:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:47:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:47:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2021-11-12 23:47:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2021-11-12 23:47:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:47:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:47:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:47:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:47:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:47:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfLogError [2021-11-12 23:47:03,009 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfLogError [2021-11-12 23:47:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:47:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryPerformanceCounter [2021-11-12 23:47:03,011 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryPerformanceCounter [2021-11-12 23:47:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:47:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:47:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:47:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2021-11-12 23:47:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2021-11-12 23:47:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-11-12 23:47:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-11-12 23:47:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2021-11-12 23:47:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2021-11-12 23:47:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:47:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2021-11-12 23:47:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2021-11-12 23:47:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2021-11-12 23:47:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2021-11-12 23:47:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:47:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:47:05,963 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:47:05,994 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-11-12 23:47:05,995 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-11-12 23:47:06,003 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:47:06,051 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-11-12 23:47:06,052 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-11-12 23:47:16,859 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:47:16,979 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-11-12 23:47:16,979 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-11-12 23:47:25,302 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:47:25,308 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:47:25,317 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:47:35,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2021-11-12 23:47:35,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2021-11-12 23:47:35,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-11-12 23:47:35,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-11-12 23:47:35,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2021-11-12 23:47:35,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2021-11-12 23:47:35,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:47:35,735 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:47:35,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:47:35 BoogieIcfgContainer [2021-11-12 23:47:35,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:47:35,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:47:35,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:47:35,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:47:35,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:46:59" (1/3) ... [2021-11-12 23:47:35,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533f1413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:47:35, skipping insertion in model container [2021-11-12 23:47:35,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:47:02" (2/3) ... [2021-11-12 23:47:35,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533f1413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:47:35, skipping insertion in model container [2021-11-12 23:47:35,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:47:35" (3/3) ... [2021-11-12 23:47:35,750 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf.i.cil-2.c [2021-11-12 23:47:35,757 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:47:35,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:47:35,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:47:35,847 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 [2021-11-12 23:47:35,847 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:47:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 259 states have (on average 1.4092664092664093) internal successors, (365), 277 states have internal predecessors, (365), 72 states have call successors, (72), 20 states have call predecessors, (72), 20 states have return successors, (72), 68 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-12 23:47:35,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:47:35,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:35,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:35,892 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:35,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2066607234, now seen corresponding path program 1 times [2021-11-12 23:47:35,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:35,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550872453] [2021-11-12 23:47:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:35,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:35,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:35,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:35,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:47:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:36,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:47:36,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:36,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:37,028 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:37,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550872453] [2021-11-12 23:47:37,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550872453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:37,029 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:37,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:47:37,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085640272] [2021-11-12 23:47:37,032 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:37,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:47:37,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:37,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:47:37,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:47:37,069 INFO L87 Difference]: Start difference. First operand has 353 states, 259 states have (on average 1.4092664092664093) internal successors, (365), 277 states have internal predecessors, (365), 72 states have call successors, (72), 20 states have call predecessors, (72), 20 states have return successors, (72), 68 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-12 23:47:37,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:37,525 INFO L93 Difference]: Finished difference Result 642 states and 946 transitions. [2021-11-12 23:47:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:37,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13 [2021-11-12 23:47:37,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:37,545 INFO L225 Difference]: With dead ends: 642 [2021-11-12 23:47:37,545 INFO L226 Difference]: Without dead ends: 346 [2021-11-12 23:47:37,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:47:37,559 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 8 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.15ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 346.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:37,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 925 Invalid, 56 Unknown, 0 Unchecked, 12.15ms Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 346.74ms Time] [2021-11-12 23:47:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-12 23:47:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-11-12 23:47:37,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 254 states have (on average 1.3700787401574803) internal successors, (348), 270 states have internal predecessors, (348), 72 states have call successors, (72), 20 states have call predecessors, (72), 19 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-12 23:47:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 478 transitions. [2021-11-12 23:47:37,663 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 478 transitions. Word has length 13 [2021-11-12 23:47:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:37,664 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 478 transitions. [2021-11-12 23:47:37,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-12 23:47:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 478 transitions. [2021-11-12 23:47:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:47:37,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:37,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:47:37,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:37,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:37,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash 71070303, now seen corresponding path program 1 times [2021-11-12 23:47:37,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:37,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711855065] [2021-11-12 23:47:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:37,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:37,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:37,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:37,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:47:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:38,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:47:38,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:39,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:39,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:39,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711855065] [2021-11-12 23:47:39,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711855065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:39,202 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:39,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-11-12 23:47:39,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496508874] [2021-11-12 23:47:39,203 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:39,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:47:39,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:39,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:47:39,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:47:39,205 INFO L87 Difference]: Start difference. First operand 346 states and 478 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:41,579 INFO L93 Difference]: Finished difference Result 804 states and 1133 transitions. [2021-11-12 23:47:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:47:41,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 23:47:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:41,592 INFO L225 Difference]: With dead ends: 804 [2021-11-12 23:47:41,592 INFO L226 Difference]: Without dead ends: 567 [2021-11-12 23:47:41,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:47:41,599 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 779 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2038.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.40ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2255.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:41,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 1102 Invalid, 364 Unknown, 0 Unchecked, 17.40ms Time], IncrementalHoareTripleChecker [18 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 2255.28ms Time] [2021-11-12 23:47:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-12 23:47:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 548. [2021-11-12 23:47:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 406 states have (on average 1.3497536945812807) internal successors, (548), 416 states have internal predecessors, (548), 107 states have call successors, (107), 35 states have call predecessors, (107), 34 states have return successors, (116), 100 states have call predecessors, (116), 96 states have call successors, (116) [2021-11-12 23:47:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 771 transitions. [2021-11-12 23:47:41,680 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 771 transitions. Word has length 15 [2021-11-12 23:47:41,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:41,681 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 771 transitions. [2021-11-12 23:47:41,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 771 transitions. [2021-11-12 23:47:41,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:47:41,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:41,685 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] [2021-11-12 23:47:41,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:41,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:41,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:41,892 INFO L85 PathProgramCache]: Analyzing trace with hash 560560956, now seen corresponding path program 1 times [2021-11-12 23:47:41,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:41,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954096284] [2021-11-12 23:47:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:41,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:41,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:41,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:41,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:47:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:42,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:47:42,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:42,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:42,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:42,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954096284] [2021-11-12 23:47:42,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954096284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:42,998 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:42,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:47:42,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99974688] [2021-11-12 23:47:42,999 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:42,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:47:42,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:47:43,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:47:43,000 INFO L87 Difference]: Start difference. First operand 548 states and 771 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:45,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:47:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:45,110 INFO L93 Difference]: Finished difference Result 976 states and 1380 transitions. [2021-11-12 23:47:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-12 23:47:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:45,118 INFO L225 Difference]: With dead ends: 976 [2021-11-12 23:47:45,119 INFO L226 Difference]: Without dead ends: 549 [2021-11-12 23:47:45,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:47:45,123 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 0 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2040.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2055.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:45,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1405 Invalid, 7 Unknown, 0 Unchecked, 6.67ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2055.16ms Time] [2021-11-12 23:47:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-12 23:47:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-11-12 23:47:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 407 states have (on average 1.348894348894349) internal successors, (549), 417 states have internal predecessors, (549), 107 states have call successors, (107), 35 states have call predecessors, (107), 34 states have return successors, (116), 100 states have call predecessors, (116), 96 states have call successors, (116) [2021-11-12 23:47:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 772 transitions. [2021-11-12 23:47:45,180 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 772 transitions. Word has length 23 [2021-11-12 23:47:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:45,181 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 772 transitions. [2021-11-12 23:47:45,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 772 transitions. [2021-11-12 23:47:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:47:45,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:45,184 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] [2021-11-12 23:47:45,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:45,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:45,400 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 633892067, now seen corresponding path program 1 times [2021-11-12 23:47:45,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:45,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009467246] [2021-11-12 23:47:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:45,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:45,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:45,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:45,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:47:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:46,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:47:46,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:46,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:46,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:46,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009467246] [2021-11-12 23:47:46,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009467246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:46,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:46,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:47:46,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482950567] [2021-11-12 23:47:46,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:46,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:47:46,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:47:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:47:46,582 INFO L87 Difference]: Start difference. First operand 549 states and 772 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:46,764 INFO L93 Difference]: Finished difference Result 1293 states and 1860 transitions. [2021-11-12 23:47:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:46,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-12 23:47:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:46,772 INFO L225 Difference]: With dead ends: 1293 [2021-11-12 23:47:46,773 INFO L226 Difference]: Without dead ends: 865 [2021-11-12 23:47:46,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:47:46,777 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 388 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.11ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.35ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:46,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 862 Invalid, 11 Unknown, 0 Unchecked, 4.11ms Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 124.35ms Time] [2021-11-12 23:47:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-11-12 23:47:46,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 836. [2021-11-12 23:47:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 615 states have (on average 1.3560975609756099) internal successors, (834), 626 states have internal predecessors, (834), 166 states have call successors, (166), 54 states have call predecessors, (166), 54 states have return successors, (200), 160 states have call predecessors, (200), 156 states have call successors, (200) [2021-11-12 23:47:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1200 transitions. [2021-11-12 23:47:46,842 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1200 transitions. Word has length 23 [2021-11-12 23:47:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:46,842 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1200 transitions. [2021-11-12 23:47:46,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:47:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1200 transitions. [2021-11-12 23:47:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:47:46,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:46,845 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] [2021-11-12 23:47:46,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:47,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:47,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:47,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1679391080, now seen corresponding path program 1 times [2021-11-12 23:47:47,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:47,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364678693] [2021-11-12 23:47:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:47,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:47,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:47,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:47,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:47:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:47,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:47:47,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:47,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:47,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:47,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364678693] [2021-11-12 23:47:47,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364678693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:47,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:47,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:47:47,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991236531] [2021-11-12 23:47:47,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:47,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:47:47,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:47:47,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:47:47,984 INFO L87 Difference]: Start difference. First operand 836 states and 1200 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-12 23:47:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:48,391 INFO L93 Difference]: Finished difference Result 850 states and 1219 transitions. [2021-11-12 23:47:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:47:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 23 [2021-11-12 23:47:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:48,399 INFO L225 Difference]: With dead ends: 850 [2021-11-12 23:47:48,399 INFO L226 Difference]: Without dead ends: 846 [2021-11-12 23:47:48,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:47:48,401 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 20 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 325.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 361.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:48,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 851 Invalid, 52 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 361.53ms Time] [2021-11-12 23:47:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-11-12 23:47:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 845. [2021-11-12 23:47:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 625 states have (on average 1.3552) internal successors, (847), 634 states have internal predecessors, (847), 165 states have call successors, (165), 55 states have call predecessors, (165), 54 states have return successors, (200), 160 states have call predecessors, (200), 156 states have call successors, (200) [2021-11-12 23:47:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1212 transitions. [2021-11-12 23:47:48,458 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1212 transitions. Word has length 23 [2021-11-12 23:47:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:48,458 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1212 transitions. [2021-11-12 23:47:48,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-12 23:47:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1212 transitions. [2021-11-12 23:47:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:47:48,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:48,460 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] [2021-11-12 23:47:48,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:48,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:48,678 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1449583916, now seen corresponding path program 1 times [2021-11-12 23:47:48,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:48,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973353456] [2021-11-12 23:47:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:48,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:48,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:48,684 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:48,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:47:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:49,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:47:49,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:50,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:50,564 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:50,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973353456] [2021-11-12 23:47:50,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973353456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:50,565 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:50,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:47:50,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181312677] [2021-11-12 23:47:50,565 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:50,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:47:50,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:47:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:47:50,566 INFO L87 Difference]: Start difference. First operand 845 states and 1212 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:47:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:52,429 INFO L93 Difference]: Finished difference Result 881 states and 1257 transitions. [2021-11-12 23:47:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:47:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-11-12 23:47:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:52,439 INFO L225 Difference]: With dead ends: 881 [2021-11-12 23:47:52,440 INFO L226 Difference]: Without dead ends: 871 [2021-11-12 23:47:52,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:47:52,448 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 848 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1531.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.71ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1715.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:52,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 729 Invalid, 319 Unknown, 0 Unchecked, 9.71ms Time], IncrementalHoareTripleChecker [146 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 1715.16ms Time] [2021-11-12 23:47:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-11-12 23:47:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 859. [2021-11-12 23:47:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 639 states have (on average 1.3552425665101722) internal successors, (866), 648 states have internal predecessors, (866), 165 states have call successors, (165), 55 states have call predecessors, (165), 54 states have return successors, (200), 160 states have call predecessors, (200), 156 states have call successors, (200) [2021-11-12 23:47:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1231 transitions. [2021-11-12 23:47:52,531 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1231 transitions. Word has length 27 [2021-11-12 23:47:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:52,532 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1231 transitions. [2021-11-12 23:47:52,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:47:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1231 transitions. [2021-11-12 23:47:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-12 23:47:52,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:52,534 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] [2021-11-12 23:47:52,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:52,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:52,748 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1871417106, now seen corresponding path program 1 times [2021-11-12 23:47:52,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:52,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782505990] [2021-11-12 23:47:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:52,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:52,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:52,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:52,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:47:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:53,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:47:53,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:54,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:54,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:54,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782505990] [2021-11-12 23:47:54,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782505990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:54,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:54,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:47:54,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667039780] [2021-11-12 23:47:54,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:54,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:47:54,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:54,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:47:54,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:47:54,324 INFO L87 Difference]: Start difference. First operand 859 states and 1231 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:47:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:56,662 INFO L93 Difference]: Finished difference Result 872 states and 1242 transitions. [2021-11-12 23:47:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:47:56,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-11-12 23:47:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:56,671 INFO L225 Difference]: With dead ends: 872 [2021-11-12 23:47:56,671 INFO L226 Difference]: Without dead ends: 865 [2021-11-12 23:47:56,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:47:56,673 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 837 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2000.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.62ms SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2207.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:56,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 1006 Invalid, 453 Unknown, 0 Unchecked, 9.62ms Time], IncrementalHoareTripleChecker [133 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 2207.46ms Time] [2021-11-12 23:47:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-11-12 23:47:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 859. [2021-11-12 23:47:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 639 states have (on average 1.353677621283255) internal successors, (865), 648 states have internal predecessors, (865), 165 states have call successors, (165), 55 states have call predecessors, (165), 54 states have return successors, (200), 160 states have call predecessors, (200), 156 states have call successors, (200) [2021-11-12 23:47:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1230 transitions. [2021-11-12 23:47:56,742 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1230 transitions. Word has length 28 [2021-11-12 23:47:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:56,744 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1230 transitions. [2021-11-12 23:47:56,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:47:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1230 transitions. [2021-11-12 23:47:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-12 23:47:56,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:56,749 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] [2021-11-12 23:47:56,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:56,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:56,973 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:56,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:56,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1912238027, now seen corresponding path program 1 times [2021-11-12 23:47:56,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:56,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473937108] [2021-11-12 23:47:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:56,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:56,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:56,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:56,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:47:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:47:57,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:47:57,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:58,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:47:58,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:58,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473937108] [2021-11-12 23:47:58,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473937108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:58,411 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:58,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:47:58,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436691460] [2021-11-12 23:47:58,412 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:58,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:47:58,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:58,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:47:58,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:47:58,414 INFO L87 Difference]: Start difference. First operand 859 states and 1230 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:47:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:47:58,762 INFO L93 Difference]: Finished difference Result 1568 states and 2272 transitions. [2021-11-12 23:47:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:47:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-11-12 23:47:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:47:58,783 INFO L225 Difference]: With dead ends: 1568 [2021-11-12 23:47:58,783 INFO L226 Difference]: Without dead ends: 1539 [2021-11-12 23:47:58,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:47:58,786 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 426 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.69ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 239.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:47:58,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1184 Invalid, 29 Unknown, 0 Unchecked, 4.69ms Time], IncrementalHoareTripleChecker [11 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 239.95ms Time] [2021-11-12 23:47:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-11-12 23:47:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1512. [2021-11-12 23:47:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1116 states have (on average 1.3620071684587813) internal successors, (1520), 1127 states have internal predecessors, (1520), 295 states have call successors, (295), 103 states have call predecessors, (295), 100 states have return successors, (385), 291 states have call predecessors, (385), 286 states have call successors, (385) [2021-11-12 23:47:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2200 transitions. [2021-11-12 23:47:58,930 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2200 transitions. Word has length 29 [2021-11-12 23:47:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:47:58,930 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2200 transitions. [2021-11-12 23:47:58,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:47:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2200 transitions. [2021-11-12 23:47:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-12 23:47:58,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:47:58,932 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] [2021-11-12 23:47:58,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:47:59,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:47:59,161 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:47:59,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:47:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1912514857, now seen corresponding path program 1 times [2021-11-12 23:47:59,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:47:59,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592723747] [2021-11-12 23:47:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:47:59,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:47:59,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:47:59,164 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:47:59,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:48:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:48:02,523 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:48:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:48:06,560 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:48:06,561 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:48:06,562 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:48:06,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:48:06,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:48:06,791 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:48:06,794 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:48:06,971 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:48:06,976 INFO L158 Benchmark]: Toolchain (without parser) took 67157.28ms. Allocated memory was 60.8MB in the beginning and 285.2MB in the end (delta: 224.4MB). Free memory was 33.2MB in the beginning and 141.7MB in the end (delta: -108.6MB). Peak memory consumption was 116.9MB. Max. memory is 16.1GB. [2021-11-12 23:48:06,976 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory is still 42.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:48:06,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2385.64ms. Allocated memory was 60.8MB in the beginning and 104.9MB in the end (delta: 44.0MB). Free memory was 32.9MB in the beginning and 45.6MB in the end (delta: -12.6MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2021-11-12 23:48:06,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 293.69ms. Allocated memory is still 104.9MB. Free memory was 45.6MB in the beginning and 47.1MB in the end (delta: -1.5MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-11-12 23:48:06,977 INFO L158 Benchmark]: Boogie Preprocessor took 392.25ms. Allocated memory was 104.9MB in the beginning and 178.3MB in the end (delta: 73.4MB). Free memory was 47.1MB in the beginning and 124.9MB in the end (delta: -77.8MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2021-11-12 23:48:06,978 INFO L158 Benchmark]: RCFGBuilder took 32838.42ms. Allocated memory was 178.3MB in the beginning and 285.2MB in the end (delta: 107.0MB). Free memory was 124.9MB in the beginning and 184.7MB in the end (delta: -59.8MB). Peak memory consumption was 172.8MB. Max. memory is 16.1GB. [2021-11-12 23:48:06,979 INFO L158 Benchmark]: TraceAbstraction took 31234.51ms. Allocated memory is still 285.2MB. Free memory was 183.6MB in the beginning and 141.7MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-11-12 23:48:06,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory is still 42.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2385.64ms. Allocated memory was 60.8MB in the beginning and 104.9MB in the end (delta: 44.0MB). Free memory was 32.9MB in the beginning and 45.6MB in the end (delta: -12.6MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 293.69ms. Allocated memory is still 104.9MB. Free memory was 45.6MB in the beginning and 47.1MB in the end (delta: -1.5MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 392.25ms. Allocated memory was 104.9MB in the beginning and 178.3MB in the end (delta: 73.4MB). Free memory was 47.1MB in the beginning and 124.9MB in the end (delta: -77.8MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * RCFGBuilder took 32838.42ms. Allocated memory was 178.3MB in the beginning and 285.2MB in the end (delta: 107.0MB). Free memory was 124.9MB in the beginning and 184.7MB in the end (delta: -59.8MB). Peak memory consumption was 172.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31234.51ms. Allocated memory is still 285.2MB. Free memory was 183.6MB in the beginning and 141.7MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:48:07,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfc6b672-5fd3-423f-b794-9b3cefa6f301/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null