./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i --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_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/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_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/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_90b99ac6-9f80-47e3-874e-af4a923695f7/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 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:40:12,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:40:12,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:40:12,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:40:12,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:40:12,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:40:12,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:40:12,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:40:12,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:40:12,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:40:12,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:40:12,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:40:12,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:40:12,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:40:12,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:40:12,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:40:12,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:40:12,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:40:12,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:40:12,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:40:12,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:40:12,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:40:12,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:40:12,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:40:12,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:40:12,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:40:12,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:40:12,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:40:12,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:40:12,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:40:12,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:40:12,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:40:12,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:40:12,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:40:12,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:40:12,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:40:12,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:40:12,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:40:12,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:40:12,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:40:12,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:40:12,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:40:12,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:40:12,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:40:12,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:40:12,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:40:12,960 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:40:12,960 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:40:12,961 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:40:12,961 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:40:12,962 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:40:12,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:40:12,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:40:12,964 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:40:12,964 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:40:12,965 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:40:12,965 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:40:12,965 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:40:12,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:40:12,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:40:12,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:40:12,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:40:12,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:40:12,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:40:12,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:40:12,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:40:12,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:40:12,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:40:12,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:40:12,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:40:12,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:40:12,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:40:12,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:40:12,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:40:12,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:40:12,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:40:12,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:40:12,976 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:40:12,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:40:12,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:40:12,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:40:12,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:40:12,978 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_90b99ac6-9f80-47e3-874e-af4a923695f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed [2021-11-13 02:40:13,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:40:13,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:40:13,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:40:13,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:40:13,388 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:40:13,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2021-11-13 02:40:13,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data/1bcb71166/8f359e5d37814a5b9b0f33ce9eafe7af/FLAGb324eae1b [2021-11-13 02:40:14,195 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:40:14,196 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2021-11-13 02:40:14,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data/1bcb71166/8f359e5d37814a5b9b0f33ce9eafe7af/FLAGb324eae1b [2021-11-13 02:40:14,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data/1bcb71166/8f359e5d37814a5b9b0f33ce9eafe7af [2021-11-13 02:40:14,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:40:14,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:40:14,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:14,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:40:14,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:40:14,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:14" (1/1) ... [2021-11-13 02:40:14,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6e8baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:14, skipping insertion in model container [2021-11-13 02:40:14,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:14" (1/1) ... [2021-11-13 02:40:14,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:40:14,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:15,108 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_90b99ac6-9f80-47e3-874e-af4a923695f7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i[33021,33034] [2021-11-13 02:40:15,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:15,325 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 02:40:15,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@524b7859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:15, skipping insertion in model container [2021-11-13 02:40:15,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:15,327 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:40:15,330 INFO L158 Benchmark]: Toolchain (without parser) took 926.22ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 50.1MB in the beginning and 78.5MB in the end (delta: -28.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-13 02:40:15,332 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory was 68.4MB in the beginning and 68.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:40:15,335 INFO L158 Benchmark]: CACSL2BoogieTranslator took 923.21ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 49.8MB in the beginning and 78.5MB in the end (delta: -28.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-13 02:40:15,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory was 68.4MB in the beginning and 68.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 923.21ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 49.8MB in the beginning and 78.5MB in the end (delta: -28.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/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_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/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_90b99ac6-9f80-47e3-874e-af4a923695f7/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 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:40:18,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:40:18,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:40:18,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:40:18,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:40:18,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:40:18,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:40:18,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:40:18,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:40:18,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:40:18,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:40:18,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:40:18,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:40:18,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:40:18,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:40:18,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:40:18,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:40:18,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:40:18,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:40:18,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:40:18,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:40:18,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:40:18,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:40:18,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:40:18,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:40:18,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:40:18,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:40:18,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:40:18,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:40:18,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:40:18,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:40:18,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:40:18,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:40:18,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:40:18,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:40:18,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:40:18,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:40:18,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:40:18,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:40:18,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:40:18,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:40:18,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:40:18,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:40:18,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:40:18,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:40:18,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:40:18,178 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:40:18,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:40:18,178 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:40:18,179 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:40:18,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:40:18,179 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:40:18,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:40:18,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:40:18,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:40:18,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:40:18,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:40:18,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:40:18,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:40:18,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:40:18,182 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:40:18,182 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:40:18,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:40:18,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:40:18,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:40:18,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:40:18,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:40:18,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:40:18,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:40:18,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:40:18,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:40:18,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:40:18,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:40:18,185 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:40:18,185 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:40:18,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:40:18,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:40:18,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:40:18,186 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_90b99ac6-9f80-47e3-874e-af4a923695f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed [2021-11-13 02:40:18,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:40:18,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:40:18,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:40:18,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:40:18,702 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:40:18,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2021-11-13 02:40:18,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data/b2692d745/5ed2976b6a284956aa8451b96a169682/FLAG16bb80bc2 [2021-11-13 02:40:19,547 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:40:19,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2021-11-13 02:40:19,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data/b2692d745/5ed2976b6a284956aa8451b96a169682/FLAG16bb80bc2 [2021-11-13 02:40:19,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/data/b2692d745/5ed2976b6a284956aa8451b96a169682 [2021-11-13 02:40:19,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:40:19,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:40:19,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:19,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:40:19,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:40:19,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:19" (1/1) ... [2021-11-13 02:40:19,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4972a81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:19, skipping insertion in model container [2021-11-13 02:40:19,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:19" (1/1) ... [2021-11-13 02:40:19,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:40:19,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:20,466 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_90b99ac6-9f80-47e3-874e-af4a923695f7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i[33021,33034] [2021-11-13 02:40:20,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:20,689 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:40:20,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:20,749 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_90b99ac6-9f80-47e3-874e-af4a923695f7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i[33021,33034] [2021-11-13 02:40:20,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:20,883 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:40:20,938 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_90b99ac6-9f80-47e3-874e-af4a923695f7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i[33021,33034] [2021-11-13 02:40:21,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:21,075 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:40:21,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21 WrapperNode [2021-11-13 02:40:21,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:21,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:40:21,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:40:21,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:40:21,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:40:21,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:40:21,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:40:21,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:40:21,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:40:21,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:40:21,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:40:21,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:40:21,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (1/1) ... [2021-11-13 02:40:21,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:40:21,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:21,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:40:21,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:40:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 02:40:21,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 02:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:40:21,498 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:40:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:40:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:40:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:40:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:40:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:40:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:40:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:40:21,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:40:27,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:40:27,933 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-11-13 02:40:27,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:40:27 BoogieIcfgContainer [2021-11-13 02:40:27,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:40:27,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:40:27,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:40:27,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:40:27,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:40:19" (1/3) ... [2021-11-13 02:40:27,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303e9f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:40:27, skipping insertion in model container [2021-11-13 02:40:27,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:21" (2/3) ... [2021-11-13 02:40:27,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303e9f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:40:27, skipping insertion in model container [2021-11-13 02:40:27,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:40:27" (3/3) ... [2021-11-13 02:40:27,956 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-2.i [2021-11-13 02:40:27,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:40:27,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:40:28,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:40:28,030 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:40:28,031 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:40:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 140 states have (on average 1.6714285714285715) internal successors, (234), 151 states have internal predecessors, (234), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 02:40:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:40:28,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:28,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:28,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:28,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:28,087 INFO L85 PathProgramCache]: Analyzing trace with hash -384684060, now seen corresponding path program 1 times [2021-11-13 02:40:28,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:28,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784850214] [2021-11-13 02:40:28,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:28,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:28,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:28,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:40:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:28,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:28,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:28,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:28,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:28,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784850214] [2021-11-13 02:40:28,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784850214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:28,513 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:28,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:28,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701027601] [2021-11-13 02:40:28,518 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:28,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:28,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:28,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:28,582 INFO L87 Difference]: Start difference. First operand has 157 states, 140 states have (on average 1.6714285714285715) internal successors, (234), 151 states have internal predecessors, (234), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:28,924 INFO L93 Difference]: Finished difference Result 400 states and 680 transitions. [2021-11-13 02:40:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:28,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 02:40:28,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:28,953 INFO L225 Difference]: With dead ends: 400 [2021-11-13 02:40:28,954 INFO L226 Difference]: Without dead ends: 212 [2021-11-13 02:40:28,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:28,970 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 292 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 181.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.19ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.99ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:28,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 451 Invalid, 16 Unknown, 0 Unchecked, 15.19ms Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 216.99ms Time] [2021-11-13 02:40:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-13 02:40:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-13 02:40:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 193 states have (on average 1.3160621761658031) internal successors, (254), 203 states have internal predecessors, (254), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 02:40:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 286 transitions. [2021-11-13 02:40:29,071 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 286 transitions. Word has length 10 [2021-11-13 02:40:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:29,072 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 286 transitions. [2021-11-13 02:40:29,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 286 transitions. [2021-11-13 02:40:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 02:40:29,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:29,081 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:29,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:29,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:29,298 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:29,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash -553494268, now seen corresponding path program 1 times [2021-11-13 02:40:29,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:29,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883313951] [2021-11-13 02:40:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:29,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:29,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:29,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:29,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:40:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:29,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:40:29,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-13 02:40:30,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-13 02:40:30,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:30,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883313951] [2021-11-13 02:40:30,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883313951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:30,661 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:30,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 02:40:30,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903381989] [2021-11-13 02:40:30,662 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:30,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:30,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:30,665 INFO L87 Difference]: Start difference. First operand 212 states and 286 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:30,951 INFO L93 Difference]: Finished difference Result 424 states and 578 transitions. [2021-11-13 02:40:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:30,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 112 [2021-11-13 02:40:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:30,962 INFO L225 Difference]: With dead ends: 424 [2021-11-13 02:40:30,962 INFO L226 Difference]: Without dead ends: 220 [2021-11-13 02:40:30,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:30,966 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 235 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241.93ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:30,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 313 Invalid, 88 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [50 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 241.93ms Time] [2021-11-13 02:40:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-13 02:40:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-11-13 02:40:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 209 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 02:40:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 276 transitions. [2021-11-13 02:40:31,012 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 276 transitions. Word has length 112 [2021-11-13 02:40:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:31,013 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 276 transitions. [2021-11-13 02:40:31,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 276 transitions. [2021-11-13 02:40:31,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 02:40:31,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:31,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:31,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:31,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:31,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash -524614268, now seen corresponding path program 1 times [2021-11-13 02:40:31,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:31,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477382809] [2021-11-13 02:40:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:31,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:31,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:31,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:31,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:40:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:31,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:40:31,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 02:40:32,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 02:40:32,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:32,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477382809] [2021-11-13 02:40:32,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477382809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:32,941 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:32,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:40:32,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625179981] [2021-11-13 02:40:32,942 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:32,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:40:32,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:40:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:32,944 INFO L87 Difference]: Start difference. First operand 218 states and 276 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:33,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:33,402 INFO L93 Difference]: Finished difference Result 381 states and 490 transitions. [2021-11-13 02:40:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:40:33,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 112 [2021-11-13 02:40:33,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:33,419 INFO L225 Difference]: With dead ends: 381 [2021-11-13 02:40:33,419 INFO L226 Difference]: Without dead ends: 216 [2021-11-13 02:40:33,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:33,422 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 417.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 437.93ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:33,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 302 Invalid, 9 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 437.93ms Time] [2021-11-13 02:40:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-13 02:40:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-13 02:40:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 207 states have internal predecessors, (241), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 02:40:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 273 transitions. [2021-11-13 02:40:33,441 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 273 transitions. Word has length 112 [2021-11-13 02:40:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:33,442 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 273 transitions. [2021-11-13 02:40:33,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 273 transitions. [2021-11-13 02:40:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-13 02:40:33,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:33,445 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:33,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:33,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:33,671 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:33,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash -306490843, now seen corresponding path program 1 times [2021-11-13 02:40:33,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:33,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023674099] [2021-11-13 02:40:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:33,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:33,676 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:33,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:40:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:34,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:40:34,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:40:34,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:40:34,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:34,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023674099] [2021-11-13 02:40:34,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023674099] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:34,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:40:34,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-13 02:40:34,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560900779] [2021-11-13 02:40:34,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:34,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:34,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:34,926 INFO L87 Difference]: Start difference. First operand 216 states and 273 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:40:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:35,005 INFO L93 Difference]: Finished difference Result 388 states and 503 transitions. [2021-11-13 02:40:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 127 [2021-11-13 02:40:35,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:35,011 INFO L225 Difference]: With dead ends: 388 [2021-11-13 02:40:35,012 INFO L226 Difference]: Without dead ends: 219 [2021-11-13 02:40:35,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:35,019 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.55ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:35,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 467 Invalid, 13 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 48.55ms Time] [2021-11-13 02:40:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-13 02:40:35,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-13 02:40:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 210 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-13 02:40:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2021-11-13 02:40:35,047 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 127 [2021-11-13 02:40:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:35,050 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2021-11-13 02:40:35,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:40:35,055 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2021-11-13 02:40:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-13 02:40:35,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:35,058 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:35,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:35,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:35,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2095038329, now seen corresponding path program 1 times [2021-11-13 02:40:35,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:35,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125538148] [2021-11-13 02:40:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:35,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:35,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:35,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:40:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:35,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:40:35,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:40:36,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 02:40:36,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:36,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125538148] [2021-11-13 02:40:36,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125538148] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:36,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1956762195] [2021-11-13 02:40:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:36,588 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:40:36,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:40:36,590 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:40:36,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-13 02:40:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:37,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:40:37,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:40:37,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 02:40:37,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1956762195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:37,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139565773] [2021-11-13 02:40:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:37,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:40:37,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:37,899 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:40:37,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 02:40:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:38,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:40:38,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 02:40:38,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 02:40:39,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139565773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:39,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:40:39,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-13 02:40:39,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206966273] [2021-11-13 02:40:39,665 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:40:39,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 02:40:39,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:39,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 02:40:39,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:40:39,667 INFO L87 Difference]: Start difference. First operand 219 states and 278 transitions. Second operand has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-13 02:40:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:42,043 INFO L93 Difference]: Finished difference Result 762 states and 987 transitions. [2021-11-13 02:40:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 02:40:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 129 [2021-11-13 02:40:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:42,050 INFO L225 Difference]: With dead ends: 762 [2021-11-13 02:40:42,050 INFO L226 Difference]: Without dead ends: 590 [2021-11-13 02:40:42,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-13 02:40:42,053 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 675 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1854.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.34ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2040.66ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:42,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 2113 Invalid, 335 Unknown, 0 Unchecked, 14.34ms Time], IncrementalHoareTripleChecker [69 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 2040.66ms Time] [2021-11-13 02:40:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-13 02:40:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2021-11-13 02:40:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 555 states have (on average 1.2072072072072073) internal successors, (670), 566 states have internal predecessors, (670), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 02:40:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 732 transitions. [2021-11-13 02:40:42,100 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 732 transitions. Word has length 129 [2021-11-13 02:40:42,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:42,100 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 732 transitions. [2021-11-13 02:40:42,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-13 02:40:42,101 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 732 transitions. [2021-11-13 02:40:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-13 02:40:42,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:42,109 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:42,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:42,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-13 02:40:42,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:42,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:42,733 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1151924123, now seen corresponding path program 2 times [2021-11-13 02:40:42,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:42,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24798315] [2021-11-13 02:40:42,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:40:42,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:42,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:42,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:42,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:40:43,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:40:43,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:40:43,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:40:43,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 199 proven. 10 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-13 02:40:44,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 181 proven. 27 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-13 02:40:45,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:45,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24798315] [2021-11-13 02:40:45,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24798315] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:45,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [416400300] [2021-11-13 02:40:45,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:40:45,729 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:40:45,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:40:45,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:40:45,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-13 02:40:47,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:40:47,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:40:47,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:40:47,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 199 proven. 10 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-13 02:40:47,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 181 proven. 27 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-13 02:40:48,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [416400300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:48,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833982894] [2021-11-13 02:40:48,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:40:48,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:40:48,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:48,855 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:40:48,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 02:40:49,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:40:49,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:40:49,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:40:49,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-11-13 02:40:50,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-11-13 02:40:51,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833982894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:51,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:40:51,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2021-11-13 02:40:51,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842117254] [2021-11-13 02:40:51,622 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:40:51,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 02:40:51,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 02:40:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:40:51,626 INFO L87 Difference]: Start difference. First operand 588 states and 732 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:40:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:53,457 INFO L93 Difference]: Finished difference Result 1155 states and 1509 transitions. [2021-11-13 02:40:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-13 02:40:53,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 337 [2021-11-13 02:40:53,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:53,468 INFO L225 Difference]: With dead ends: 1155 [2021-11-13 02:40:53,468 INFO L226 Difference]: Without dead ends: 608 [2021-11-13 02:40:53,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2041 GetRequests, 1998 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2021-11-13 02:40:53,473 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 133 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 580.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.40ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 665.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:53,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1855 Invalid, 325 Unknown, 0 Unchecked, 13.40ms Time], IncrementalHoareTripleChecker [87 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 665.80ms Time] [2021-11-13 02:40:53,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-13 02:40:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 600. [2021-11-13 02:40:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 567 states have (on average 1.2098765432098766) internal successors, (686), 578 states have internal predecessors, (686), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 02:40:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 748 transitions. [2021-11-13 02:40:53,543 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 748 transitions. Word has length 337 [2021-11-13 02:40:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:53,544 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 748 transitions. [2021-11-13 02:40:53,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:40:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 748 transitions. [2021-11-13 02:40:53,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-11-13 02:40:53,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:53,556 INFO L514 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:53,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:53,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:53,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-13 02:40:54,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:40:54,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash -829188699, now seen corresponding path program 3 times [2021-11-13 02:40:54,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:54,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380309013] [2021-11-13 02:40:54,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:40:54,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:54,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:54,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:54,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b99ac6-9f80-47e3-874e-af4a923695f7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process