./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/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 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:33:09,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:33:09,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:33:09,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:33:09,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:33:09,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:33:09,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:33:09,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:33:09,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:33:09,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:33:09,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:33:09,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:33:09,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:33:09,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:33:09,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:33:10,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:33:10,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:33:10,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:33:10,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:33:10,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:33:10,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:33:10,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:33:10,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:33:10,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:33:10,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:33:10,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:33:10,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:33:10,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:33:10,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:33:10,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:33:10,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:33:10,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:33:10,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:33:10,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:33:10,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:33:10,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:33:10,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:33:10,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:33:10,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:33:10,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:33:10,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:33:10,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:33:10,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:33:10,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:33:10,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:33:10,093 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:33:10,093 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:33:10,094 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:33:10,094 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:33:10,094 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:33:10,095 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:33:10,095 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:33:10,096 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:33:10,096 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:33:10,097 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:33:10,097 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:33:10,097 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:33:10,098 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:33:10,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:33:10,099 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:33:10,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:33:10,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:33:10,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:33:10,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:33:10,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:33:10,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:33:10,101 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:33:10,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:33:10,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:33:10,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:33:10,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:33:10,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:33:10,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:33:10,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:33:10,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:33:10,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:33:10,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:33:10,106 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:33:10,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:33:10,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:33:10,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:33:10,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:33:10,108 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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-13 01:33:10,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:33:10,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:33:10,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:33:10,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:33:10,444 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:33:10,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-13 01:33:10,522 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data/cef470b4e/61482d0456374f15a3f69389e9e979a5/FLAG0ddf29b7f [2021-11-13 01:33:11,399 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:33:11,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-13 01:33:11,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data/cef470b4e/61482d0456374f15a3f69389e9e979a5/FLAG0ddf29b7f [2021-11-13 01:33:11,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data/cef470b4e/61482d0456374f15a3f69389e9e979a5 [2021-11-13 01:33:11,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:33:11,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:33:11,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:11,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:33:11,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:33:11,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:11" (1/1) ... [2021-11-13 01:33:11,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb11722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:11, skipping insertion in model container [2021-11-13 01:33:11,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:11" (1/1) ... [2021-11-13 01:33:11,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:33:12,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:33:12,664 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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-13 01:33:12,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:12,959 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 01:33:12,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5348b836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:12, skipping insertion in model container [2021-11-13 01:33:12,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:12,970 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:33:12,972 INFO L158 Benchmark]: Toolchain (without parser) took 1005.98ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 66.4MB in the beginning and 66.9MB in the end (delta: -437.9kB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2021-11-13 01:33:12,974 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:33:12,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 996.90ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 66.2MB in the beginning and 66.9MB in the end (delta: -641.3kB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2021-11-13 01:33:12,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 996.90ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 66.2MB in the beginning and 66.9MB in the end (delta: -641.3kB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/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 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:33:15,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:33:15,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:33:15,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:33:15,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:33:15,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:33:15,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:33:15,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:33:15,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:33:15,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:33:15,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:33:15,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:33:15,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:33:15,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:33:15,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:33:15,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:33:15,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:33:15,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:33:15,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:33:15,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:33:15,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:33:15,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:33:15,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:33:15,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:33:15,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:33:15,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:33:15,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:33:15,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:33:15,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:33:15,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:33:15,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:33:15,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:33:15,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:33:15,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:33:15,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:33:15,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:33:15,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:33:15,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:33:15,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:33:15,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:33:15,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:33:15,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 01:33:15,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:33:15,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:33:15,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:33:15,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:33:15,692 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:33:15,692 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:33:15,693 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:33:15,693 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:33:15,693 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:33:15,693 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:33:15,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:33:15,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:33:15,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:33:15,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:33:15,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:33:15,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:33:15,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:33:15,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:33:15,698 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:33:15,698 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:33:15,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:33:15,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:33:15,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:33:15,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:33:15,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:33:15,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:33:15,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:33:15,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:33:15,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:33:15,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:33:15,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:33:15,701 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:33:15,701 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:33:15,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:33:15,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:33:15,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:33:15,702 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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-13 01:33:16,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:33:16,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:33:16,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:33:16,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:33:16,130 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:33:16,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-13 01:33:16,212 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data/d98f3526a/1841b64eb1be43418b324aadc7c01925/FLAGb24119bc8 [2021-11-13 01:33:16,936 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:33:16,937 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-13 01:33:16,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data/d98f3526a/1841b64eb1be43418b324aadc7c01925/FLAGb24119bc8 [2021-11-13 01:33:17,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/data/d98f3526a/1841b64eb1be43418b324aadc7c01925 [2021-11-13 01:33:17,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:33:17,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:33:17,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:17,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:33:17,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:33:17,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:17" (1/1) ... [2021-11-13 01:33:17,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16bc0de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:17, skipping insertion in model container [2021-11-13 01:33:17,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:33:17" (1/1) ... [2021-11-13 01:33:17,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:33:17,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:33:17,744 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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-13 01:33:18,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:18,090 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:33:18,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:33:18,169 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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-13 01:33:18,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:18,380 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:33:18,431 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_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-13 01:33:18,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:33:18,662 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:33:18,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18 WrapperNode [2021-11-13 01:33:18,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:33:18,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:33:18,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:33:18,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:33:18,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:18,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:18,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:33:18,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:33:18,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:33:18,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:33:18,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:18,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:18,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:18,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:19,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:19,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:19,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:19,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:33:19,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:33:19,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:33:19,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:33:19,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (1/1) ... [2021-11-13 01:33:19,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:33:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:33:19,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:33:19,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:33:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:33:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 01:33:19,231 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 01:33:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:33:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:33:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:33:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:33:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:33:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:33:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:33:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:33:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 01:33:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:33:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:33:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:33:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:33:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:33:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:33:34,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:33:34,347 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-13 01:33:34,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:33:34 BoogieIcfgContainer [2021-11-13 01:33:34,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:33:34,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:33:34,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:33:34,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:33:34,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:33:17" (1/3) ... [2021-11-13 01:33:34,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f17723c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:33:34, skipping insertion in model container [2021-11-13 01:33:34,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:33:18" (2/3) ... [2021-11-13 01:33:34,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f17723c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:33:34, skipping insertion in model container [2021-11-13 01:33:34,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:33:34" (3/3) ... [2021-11-13 01:33:34,362 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-2.i [2021-11-13 01:33:34,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:33:34,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:33:34,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:33:34,460 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:33:34,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:33:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 438 states have (on average 1.7100456621004567) internal successors, (749), 443 states have internal predecessors, (749), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-13 01:33:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 01:33:34,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:34,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:34,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:34,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:34,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1709343748, now seen corresponding path program 1 times [2021-11-13 01:33:34,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:34,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311933256] [2021-11-13 01:33:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:34,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:34,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:34,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:33:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:34,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:33:34,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:35,017 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 01:33:35,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:35,088 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 01:33:35,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:35,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311933256] [2021-11-13 01:33:35,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311933256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:35,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:35,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:33:35,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870066470] [2021-11-13 01:33:35,097 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:35,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:33:35,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:33:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:33:35,154 INFO L87 Difference]: Start difference. First operand has 457 states, 438 states have (on average 1.7100456621004567) internal successors, (749), 443 states have internal predecessors, (749), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:35,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:35,276 INFO L93 Difference]: Finished difference Result 912 states and 1560 transitions. [2021-11-13 01:33:35,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:33:35,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 01:33:35,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:35,310 INFO L225 Difference]: With dead ends: 912 [2021-11-13 01:33:35,310 INFO L226 Difference]: Without dead ends: 424 [2021-11-13 01:33:35,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:33:35,330 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:35,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 9.55ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:33:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-13 01:33:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-11-13 01:33:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 406 states have (on average 1.3251231527093597) internal successors, (538), 411 states have internal predecessors, (538), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:33:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 565 transitions. [2021-11-13 01:33:35,462 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 565 transitions. Word has length 13 [2021-11-13 01:33:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:35,463 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 565 transitions. [2021-11-13 01:33:35,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 565 transitions. [2021-11-13 01:33:35,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 01:33:35,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:35,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:35,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:35,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:35,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash 467454242, now seen corresponding path program 1 times [2021-11-13 01:33:35,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:35,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871000563] [2021-11-13 01:33:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:35,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:35,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:35,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:35,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:33:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:35,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:36,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:36,211 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 01:33:36,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:36,415 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 01:33:36,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:36,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871000563] [2021-11-13 01:33:36,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871000563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:36,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:36,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:33:36,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144131059] [2021-11-13 01:33:36,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:36,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:36,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:36,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:36,421 INFO L87 Difference]: Start difference. First operand 424 states and 565 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:36,646 INFO L93 Difference]: Finished difference Result 670 states and 899 transitions. [2021-11-13 01:33:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:36,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-13 01:33:36,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:36,651 INFO L225 Difference]: With dead ends: 670 [2021-11-13 01:33:36,652 INFO L226 Difference]: Without dead ends: 428 [2021-11-13 01:33:36,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 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 01:33:36,655 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 569 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.25ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:36,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 1322 Invalid, 79 Unknown, 0 Unchecked, 12.25ms Time], IncrementalHoareTripleChecker [44 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 154.42ms Time] [2021-11-13 01:33:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-13 01:33:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2021-11-13 01:33:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 409 states have (on average 1.3031784841075795) internal successors, (533), 414 states have internal predecessors, (533), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:33:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 560 transitions. [2021-11-13 01:33:36,697 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 560 transitions. Word has length 48 [2021-11-13 01:33:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:36,698 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 560 transitions. [2021-11-13 01:33:36,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 560 transitions. [2021-11-13 01:33:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 01:33:36,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:36,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:36,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:36,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:36,925 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1867122608, now seen corresponding path program 1 times [2021-11-13 01:33:36,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:36,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103555855] [2021-11-13 01:33:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:36,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:36,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:36,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:36,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:33:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:37,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:33:37,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:37,483 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 01:33:37,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:37,877 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 01:33:37,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:37,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103555855] [2021-11-13 01:33:37,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103555855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:37,878 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:37,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 01:33:37,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086145662] [2021-11-13 01:33:37,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:37,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:33:37,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:33:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:33:37,881 INFO L87 Difference]: Start difference. First operand 427 states and 560 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:38,115 INFO L93 Difference]: Finished difference Result 643 states and 849 transitions. [2021-11-13 01:33:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:38,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-13 01:33:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:38,121 INFO L225 Difference]: With dead ends: 643 [2021-11-13 01:33:38,121 INFO L226 Difference]: Without dead ends: 421 [2021-11-13 01:33:38,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:33:38,127 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 270 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.13ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:38,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2108 Invalid, 68 Unknown, 0 Unchecked, 9.13ms Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 184.70ms Time] [2021-11-13 01:33:38,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-13 01:33:38,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-13 01:33:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 403 states have (on average 1.2977667493796525) internal successors, (523), 408 states have internal predecessors, (523), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:33:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 550 transitions. [2021-11-13 01:33:38,163 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 550 transitions. Word has length 48 [2021-11-13 01:33:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:38,164 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 550 transitions. [2021-11-13 01:33:38,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:38,165 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 550 transitions. [2021-11-13 01:33:38,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 01:33:38,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:38,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:38,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:38,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:38,368 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:38,368 INFO L85 PathProgramCache]: Analyzing trace with hash 725815830, now seen corresponding path program 1 times [2021-11-13 01:33:38,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:38,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4685785] [2021-11-13 01:33:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:38,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:38,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:38,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:38,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:33:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:38,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:38,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:38,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:33:38,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:33:38,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:33:38,935 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 01:33:38,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 01:33:39,025 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 01:33:39,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 01:33:39,171 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 01:33:39,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:39,381 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 01:33:39,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:39,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4685785] [2021-11-13 01:33:39,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4685785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:39,382 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:39,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:33:39,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279671418] [2021-11-13 01:33:39,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:39,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:33:39,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:33:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:39,385 INFO L87 Difference]: Start difference. First operand 421 states and 550 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:47,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:49,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:52,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:53,826 INFO L93 Difference]: Finished difference Result 739 states and 967 transitions. [2021-11-13 01:33:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:33:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-13 01:33:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:53,832 INFO L225 Difference]: With dead ends: 739 [2021-11-13 01:33:53,833 INFO L226 Difference]: Without dead ends: 496 [2021-11-13 01:33:53,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:33:53,835 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 475 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13898.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.31ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14334.18ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:53,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1739 Invalid, 466 Unknown, 0 Unchecked, 13.31ms Time], IncrementalHoareTripleChecker [6 Valid, 458 Invalid, 2 Unknown, 0 Unchecked, 14334.18ms Time] [2021-11-13 01:33:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-13 01:33:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 423. [2021-11-13 01:33:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 405 states have (on average 1.2962962962962963) internal successors, (525), 410 states have internal predecessors, (525), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:33:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 552 transitions. [2021-11-13 01:33:53,857 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 552 transitions. Word has length 48 [2021-11-13 01:33:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:53,875 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 552 transitions. [2021-11-13 01:33:53,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 552 transitions. [2021-11-13 01:33:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 01:33:53,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:53,879 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:53,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:54,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:54,101 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash 365841096, now seen corresponding path program 1 times [2021-11-13 01:33:54,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:54,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209887982] [2021-11-13 01:33:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:54,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:54,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:54,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:54,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:33:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:54,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:54,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:54,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:55,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:55,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209887982] [2021-11-13 01:33:55,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209887982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:55,132 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:55,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:33:55,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940998872] [2021-11-13 01:33:55,133 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:55,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:55,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:55,135 INFO L87 Difference]: Start difference. First operand 423 states and 552 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:55,322 INFO L93 Difference]: Finished difference Result 935 states and 1224 transitions. [2021-11-13 01:33:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:55,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-13 01:33:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:55,328 INFO L225 Difference]: With dead ends: 935 [2021-11-13 01:33:55,328 INFO L226 Difference]: Without dead ends: 516 [2021-11-13 01:33:55,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 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 01:33:55,331 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 488 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.92ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:55,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1525 Invalid, 69 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 135.92ms Time] [2021-11-13 01:33:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-13 01:33:55,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 426. [2021-11-13 01:33:55,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 408 states have (on average 1.2745098039215685) internal successors, (520), 413 states have internal predecessors, (520), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 01:33:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 547 transitions. [2021-11-13 01:33:55,400 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 547 transitions. Word has length 101 [2021-11-13 01:33:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:55,403 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 547 transitions. [2021-11-13 01:33:55,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 547 transitions. [2021-11-13 01:33:55,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 01:33:55,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:55,407 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:55,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:55,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:55,628 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:55,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1817491628, now seen corresponding path program 1 times [2021-11-13 01:33:55,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:55,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476009683] [2021-11-13 01:33:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:55,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:55,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:55,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:55,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:33:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:56,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:56,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:56,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:57,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:57,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476009683] [2021-11-13 01:33:57,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476009683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:33:57,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:33:57,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:33:57,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594217571] [2021-11-13 01:33:57,285 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:57,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:33:57,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:57,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:33:57,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:33:57,287 INFO L87 Difference]: Start difference. First operand 426 states and 547 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:58,083 INFO L93 Difference]: Finished difference Result 1075 states and 1384 transitions. [2021-11-13 01:33:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:33:58,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-13 01:33:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:58,089 INFO L225 Difference]: With dead ends: 1075 [2021-11-13 01:33:58,089 INFO L226 Difference]: Without dead ends: 653 [2021-11-13 01:33:58,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 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 01:33:58,092 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 246 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 709.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.79ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 743.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:58,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1053 Invalid, 22 Unknown, 0 Unchecked, 4.79ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 743.81ms Time] [2021-11-13 01:33:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-13 01:33:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 649. [2021-11-13 01:33:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 626 states have (on average 1.2747603833865815) internal successors, (798), 631 states have internal predecessors, (798), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 01:33:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 835 transitions. [2021-11-13 01:33:58,133 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 835 transitions. Word has length 101 [2021-11-13 01:33:58,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:58,134 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 835 transitions. [2021-11-13 01:33:58,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:33:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 835 transitions. [2021-11-13 01:33:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 01:33:58,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:58,137 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:58,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:58,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:58,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:58,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:58,358 INFO L85 PathProgramCache]: Analyzing trace with hash -193458954, now seen corresponding path program 1 times [2021-11-13 01:33:58,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:58,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705219982] [2021-11-13 01:33:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:58,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:58,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:58,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:58,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:33:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:58,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:58,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:33:59,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:33:59,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:59,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705219982] [2021-11-13 01:33:59,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705219982] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:59,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:59,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-13 01:33:59,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601482158] [2021-11-13 01:33:59,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:59,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:59,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:59,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:33:59,597 INFO L87 Difference]: Start difference. First operand 649 states and 835 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:33:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:59,712 INFO L93 Difference]: Finished difference Result 1253 states and 1619 transitions. [2021-11-13 01:33:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:33:59,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 116 [2021-11-13 01:33:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:59,720 INFO L225 Difference]: With dead ends: 1253 [2021-11-13 01:33:59,720 INFO L226 Difference]: Without dead ends: 652 [2021-11-13 01:33:59,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 226 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 01:33:59,723 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 2 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.22ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:59,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1598 Invalid, 21 Unknown, 0 Unchecked, 4.36ms Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 65.22ms Time] [2021-11-13 01:33:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-13 01:33:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-13 01:33:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 628 states have (on average 1.2754777070063694) internal successors, (801), 634 states have internal predecessors, (801), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 01:33:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 841 transitions. [2021-11-13 01:33:59,782 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 841 transitions. Word has length 116 [2021-11-13 01:33:59,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:59,783 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 841 transitions. [2021-11-13 01:33:59,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 01:33:59,784 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 841 transitions. [2021-11-13 01:33:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 01:33:59,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:59,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:59,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:00,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:00,002 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:00,003 INFO L85 PathProgramCache]: Analyzing trace with hash 99255444, now seen corresponding path program 1 times [2021-11-13 01:34:00,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:00,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612568641] [2021-11-13 01:34:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:00,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:00,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:00,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:00,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:34:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:00,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:00,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:34:00,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:34:01,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:01,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612568641] [2021-11-13 01:34:01,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612568641] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:01,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2123916734] [2021-11-13 01:34:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:01,216 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:34:01,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:34:01,222 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:34:01,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-13 01:34:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:01,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:01,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 01:34:02,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:34:02,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2123916734] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:02,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015685478] [2021-11-13 01:34:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:02,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:34:02,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:34:02,475 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:34:02,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 01:34:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:02,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:34:02,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:34:03,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 01:34:03,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015685478] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:03,533 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:34:03,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-13 01:34:03,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525292068] [2021-11-13 01:34:03,534 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:34:03,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:34:03,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:03,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:34:03,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:34:03,536 INFO L87 Difference]: Start difference. First operand 652 states and 841 transitions. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 01:34:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:04,149 INFO L93 Difference]: Finished difference Result 1271 states and 1657 transitions. [2021-11-13 01:34:04,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:34:04,150 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 118 [2021-11-13 01:34:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:04,157 INFO L225 Difference]: With dead ends: 1271 [2021-11-13 01:34:04,157 INFO L226 Difference]: Without dead ends: 667 [2021-11-13 01:34:04,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:34:04,160 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 56 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 284.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.81ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 332.32ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:04,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 2635 Invalid, 143 Unknown, 0 Unchecked, 6.81ms Time], IncrementalHoareTripleChecker [48 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 332.32ms Time] [2021-11-13 01:34:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-13 01:34:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 663. [2021-11-13 01:34:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 638 states have (on average 1.2836990595611286) internal successors, (819), 644 states have internal predecessors, (819), 19 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 01:34:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 859 transitions. [2021-11-13 01:34:04,212 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 859 transitions. Word has length 118 [2021-11-13 01:34:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:04,212 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 859 transitions. [2021-11-13 01:34:04,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 01:34:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 859 transitions. [2021-11-13 01:34:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 01:34:04,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:04,220 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:04,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:04,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:04,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:04,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:34:04,844 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:04,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:04,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1023145078, now seen corresponding path program 2 times [2021-11-13 01:34:04,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:04,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436404804] [2021-11-13 01:34:04,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:34:04,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:04,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:04,848 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:04,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:34:05,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:34:05,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:34:05,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:34:05,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 01:34:05,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:34:06,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:06,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436404804] [2021-11-13 01:34:06,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436404804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:06,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [854046912] [2021-11-13 01:34:06,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:34:06,266 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:34:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:34:06,267 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:34:06,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 01:34:06,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:34:06,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:34:06,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:34:06,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 01:34:07,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:34:07,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [854046912] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:07,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959515007] [2021-11-13 01:34:07,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:34:07,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:34:07,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:34:07,622 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:34:07,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 01:34:08,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:34:08,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:34:08,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:34:08,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 01:34:08,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 01:34:09,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959515007] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:34:09,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:34:09,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-13 01:34:09,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293547341] [2021-11-13 01:34:09,188 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:34:09,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 01:34:09,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 01:34:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:34:09,191 INFO L87 Difference]: Start difference. First operand 663 states and 859 transitions. Second operand has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 01:34:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:10,699 INFO L93 Difference]: Finished difference Result 1297 states and 1696 transitions. [2021-11-13 01:34:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 01:34:10,700 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-11-13 01:34:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:10,706 INFO L225 Difference]: With dead ends: 1297 [2021-11-13 01:34:10,706 INFO L226 Difference]: Without dead ends: 676 [2021-11-13 01:34:10,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:34:10,712 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 91 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 599.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.88ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 691.03ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:10,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 3203 Invalid, 316 Unknown, 0 Unchecked, 8.88ms Time], IncrementalHoareTripleChecker [84 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 691.03ms Time] [2021-11-13 01:34:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-13 01:34:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 670. [2021-11-13 01:34:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 645 states have (on average 1.2806201550387597) internal successors, (826), 651 states have internal predecessors, (826), 19 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (21), 15 states have call predecessors, (21), 18 states have call successors, (21) [2021-11-13 01:34:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 866 transitions. [2021-11-13 01:34:10,756 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 866 transitions. Word has length 124 [2021-11-13 01:34:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:10,757 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 866 transitions. [2021-11-13 01:34:10,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 01:34:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 866 transitions. [2021-11-13 01:34:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 01:34:10,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:10,761 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:10,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:10,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:11,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:11,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:34:11,368 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash -83749132, now seen corresponding path program 3 times [2021-11-13 01:34:11,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:11,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851041595] [2021-11-13 01:34:11,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:34:11,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:11,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:11,372 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:11,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12f0004-7480-4a7a-bc60-29c4a6c3d9ab/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:34:12,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 01:34:12,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:34:12,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:34:12,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:12,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:34:12,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:34:12,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:34:12,475 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 01:34:12,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 01:34:12,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 01:34:12,689 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 01:34:12,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17