./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH --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 d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:16:37,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:37,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:37,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:37,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:37,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:38,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:38,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:38,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:38,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:38,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:38,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:38,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:38,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:38,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:38,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:38,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:38,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:38,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:38,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:38,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:38,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:38,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:38,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:38,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:38,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:38,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:38,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:38,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:38,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:38,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:38,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:38,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:38,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:38,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:38,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:38,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:38,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:38,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:38,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:38,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:38,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:16:38,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:38,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:38,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:16:38,074 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:16:38,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:16:38,075 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:16:38,075 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:16:38,075 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:16:38,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:16:38,076 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:16:38,076 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:16:38,076 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:16:38,077 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:16:38,077 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:16:38,077 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:16:38,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:38,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:38,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:16:38,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:38,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:38,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:38,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:38,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:38,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:16:38,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:38,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:38,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:38,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:38,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:38,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:38,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:38,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:38,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:38,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:38,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:16:38,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:16:38,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:38,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:38,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:16:38,083 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_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2021-11-03 05:16:38,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:38,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:38,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:38,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:38,364 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:38,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-03 05:16:38,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data/0745805ef/d485900d6d0d450c95b4cc7343dc0a69/FLAG6e6fb0832 [2021-11-03 05:16:39,095 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:39,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-03 05:16:39,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data/0745805ef/d485900d6d0d450c95b4cc7343dc0a69/FLAG6e6fb0832 [2021-11-03 05:16:39,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data/0745805ef/d485900d6d0d450c95b4cc7343dc0a69 [2021-11-03 05:16:39,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:39,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:39,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:39,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:39,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:39,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:39" (1/1) ... [2021-11-03 05:16:39,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8fb6df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:39, skipping insertion in model container [2021-11-03 05:16:39,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:39" (1/1) ... [2021-11-03 05:16:39,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:39,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:40,020 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-03 05:16:40,045 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-03 05:16:40,199 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-03 05:16:40,200 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-03 05:16:40,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:40,236 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) [2021-11-03 05:16:40,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5fa6b328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:40, skipping insertion in model container [2021-11-03 05:16:40,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:40,237 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:16:40,241 INFO L168 Benchmark]: Toolchain (without parser) took 968.01 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 71.9 MB in the end (delta: -534.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:16:40,242 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:16:40,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 957.28 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 71.9 MB in the end (delta: -753.8 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:16:40,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 957.28 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 71.9 MB in the end (delta: -753.8 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH --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 d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:16:42,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:42,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:42,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:42,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:42,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:42,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:42,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:42,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:42,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:42,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:42,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:42,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:42,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:42,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:42,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:42,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:42,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:42,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:42,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:42,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:42,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:42,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:42,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:42,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:42,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:42,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:42,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:42,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:42,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:42,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:42,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:42,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:42,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:42,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:42,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:42,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:42,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:42,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:42,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:42,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:42,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:16:42,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:42,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:42,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:16:42,548 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:16:42,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:16:42,549 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:16:42,549 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:16:42,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:16:42,549 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:16:42,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:42,552 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:42,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:42,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:42,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:42,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:42,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:42,553 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:16:42,553 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:16:42,553 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:16:42,554 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:42,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:42,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:42,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:42,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:42,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:16:42,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:42,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:42,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:42,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:42,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:42,556 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:16:42,556 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:16:42,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:42,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:42,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:16:42,558 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_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2021-11-03 05:16:42,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:43,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:43,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:43,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:43,015 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:43,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-03 05:16:43,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data/b01e457b4/b4ade34dd71445bfb7cc6cb2cad81f28/FLAG51da5b110 [2021-11-03 05:16:43,712 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:43,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-03 05:16:43,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data/b01e457b4/b4ade34dd71445bfb7cc6cb2cad81f28/FLAG51da5b110 [2021-11-03 05:16:43,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/data/b01e457b4/b4ade34dd71445bfb7cc6cb2cad81f28 [2021-11-03 05:16:43,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:43,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:43,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:43,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:43,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:43,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:43" (1/1) ... [2021-11-03 05:16:43,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609bb917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:43, skipping insertion in model container [2021-11-03 05:16:43,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:43" (1/1) ... [2021-11-03 05:16:43,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:44,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:44,647 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-03 05:16:44,657 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-03 05:16:44,807 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-03 05:16:44,808 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-03 05:16:44,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:44,841 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:16:44,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:44,880 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-03 05:16:44,882 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-03 05:16:44,989 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-03 05:16:44,996 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-03 05:16:45,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:45,034 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:16:45,079 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-11-03 05:16:45,081 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-11-03 05:16:45,125 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-11-03 05:16:45,126 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_5ab6057d-3883-4058-9caf-17a003cae63a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-11-03 05:16:45,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:45,203 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:16:45,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45 WrapperNode [2021-11-03 05:16:45,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:45,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:45,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:16:45,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:16:45,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:45,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:16:45,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:16:45,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:16:45,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:16:45,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:16:45,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:16:45,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:16:45,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (1/1) ... [2021-11-03 05:16:45,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:45,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:16:45,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:16:45,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:16:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:16:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:16:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:16:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:16:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:16:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:16:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:16:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:16:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:16:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:16:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:16:45,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:16:51,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:16:51,926 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-03 05:16:51,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:51 BoogieIcfgContainer [2021-11-03 05:16:51,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:16:51,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:16:51,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:16:51,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:16:51,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:16:43" (1/3) ... [2021-11-03 05:16:51,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20df588f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:51, skipping insertion in model container [2021-11-03 05:16:51,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:45" (2/3) ... [2021-11-03 05:16:51,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20df588f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:51, skipping insertion in model container [2021-11-03 05:16:51,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:51" (3/3) ... [2021-11-03 05:16:51,943 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2021-11-03 05:16:51,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:16:51,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-03 05:16:51,994 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:16:52,000 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 [2021-11-03 05:16:52,000 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-03 05:16:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:16:52,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:52,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:52,026 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:16:52,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-03 05:16:52,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:52,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120333491] [2021-11-03 05:16:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:52,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:52,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:52,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:52,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:16:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:52,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:16:52,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:52,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:52,331 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:52,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120333491] [2021-11-03 05:16:52,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120333491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:52,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:52,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:16:52,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344011693] [2021-11-03 05:16:52,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:16:52,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:16:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:16:52,354 INFO L87 Difference]: Start difference. First operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:52,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:52,400 INFO L93 Difference]: Finished difference Result 544 states and 861 transitions. [2021-11-03 05:16:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:16:52,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 05:16:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:52,412 INFO L225 Difference]: With dead ends: 544 [2021-11-03 05:16:52,413 INFO L226 Difference]: Without dead ends: 266 [2021-11-03 05:16:52,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:16:52,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-03 05:16:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-03 05:16:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 253 states have (on average 1.3241106719367588) internal successors, (335), 265 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2021-11-03 05:16:52,465 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 8 [2021-11-03 05:16:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:52,465 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2021-11-03 05:16:52,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2021-11-03 05:16:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 05:16:52,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:52,466 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:52,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:52,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:52,683 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:16:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:52,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-03 05:16:52,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:52,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690953079] [2021-11-03 05:16:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:52,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:52,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:52,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:52,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:16:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:52,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:16:52,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:52,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:53,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:53,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690953079] [2021-11-03 05:16:53,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690953079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:53,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:53,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:16:53,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97159599] [2021-11-03 05:16:53,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:53,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:53,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:53,085 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:58,192 INFO L93 Difference]: Finished difference Result 701 states and 886 transitions. [2021-11-03 05:16:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:16:58,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 05:16:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:58,197 INFO L225 Difference]: With dead ends: 701 [2021-11-03 05:16:58,197 INFO L226 Difference]: Without dead ends: 433 [2021-11-03 05:16:58,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:58,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-03 05:16:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 378. [2021-11-03 05:16:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 365 states have (on average 1.326027397260274) internal successors, (484), 377 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 484 transitions. [2021-11-03 05:16:58,272 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 484 transitions. Word has length 10 [2021-11-03 05:16:58,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:58,273 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 484 transitions. [2021-11-03 05:16:58,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 484 transitions. [2021-11-03 05:16:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:16:58,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:58,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:58,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:58,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:58,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:16:58,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash -315185698, now seen corresponding path program 1 times [2021-11-03 05:16:58,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:58,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655468253] [2021-11-03 05:16:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:58,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:58,477 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:58,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:16:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:58,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:58,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:58,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:16:58,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:16:58,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:16:58,840 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 05:16:58,841 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 [2021-11-03 05:16:58,921 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 05:16:58,921 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 [2021-11-03 05:16:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:58,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:59,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:59,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655468253] [2021-11-03 05:16:59,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655468253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:59,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:59,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:16:59,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257700546] [2021-11-03 05:16:59,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:16:59,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:59,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:16:59,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:16:59,048 INFO L87 Difference]: Start difference. First operand 378 states and 484 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:09,781 INFO L93 Difference]: Finished difference Result 822 states and 1044 transitions. [2021-11-03 05:17:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:17:09,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 05:17:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:09,785 INFO L225 Difference]: With dead ends: 822 [2021-11-03 05:17:09,786 INFO L226 Difference]: Without dead ends: 603 [2021-11-03 05:17:09,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:17:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-03 05:17:09,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 377. [2021-11-03 05:17:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 364 states have (on average 1.3241758241758241) internal successors, (482), 376 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 482 transitions. [2021-11-03 05:17:09,807 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 482 transitions. Word has length 12 [2021-11-03 05:17:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:09,808 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 482 transitions. [2021-11-03 05:17:09,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 482 transitions. [2021-11-03 05:17:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:17:09,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:09,810 INFO L513 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] [2021-11-03 05:17:09,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 05:17:10,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:10,027 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:17:10,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:10,028 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-03 05:17:10,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:10,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996293143] [2021-11-03 05:17:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:10,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:10,035 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:10,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:17:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:10,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:17:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:10,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:10,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:10,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996293143] [2021-11-03 05:17:10,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996293143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:10,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:10,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:17:10,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040094683] [2021-11-03 05:17:10,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:10,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:10,587 INFO L87 Difference]: Start difference. First operand 377 states and 482 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:10,708 INFO L93 Difference]: Finished difference Result 752 states and 968 transitions. [2021-11-03 05:17:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:10,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 05:17:10,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:10,711 INFO L225 Difference]: With dead ends: 752 [2021-11-03 05:17:10,711 INFO L226 Difference]: Without dead ends: 385 [2021-11-03 05:17:10,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-03 05:17:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2021-11-03 05:17:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 370 states have (on average 1.2756756756756757) internal successors, (472), 382 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 472 transitions. [2021-11-03 05:17:10,729 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 472 transitions. Word has length 44 [2021-11-03 05:17:10,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:10,729 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 472 transitions. [2021-11-03 05:17:10,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 472 transitions. [2021-11-03 05:17:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:17:10,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:10,732 INFO L513 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] [2021-11-03 05:17:10,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:10,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:10,950 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:17:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:10,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-03 05:17:10,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:10,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066990197] [2021-11-03 05:17:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:10,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:10,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:10,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:10,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:17:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:11,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:11,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:11,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:11,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:11,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066990197] [2021-11-03 05:17:11,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066990197] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:11,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:11,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:17:11,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462161317] [2021-11-03 05:17:11,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:11,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:11,482 INFO L87 Difference]: Start difference. First operand 383 states and 472 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:15,759 INFO L93 Difference]: Finished difference Result 929 states and 1164 transitions. [2021-11-03 05:17:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:17:15,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 05:17:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:15,778 INFO L225 Difference]: With dead ends: 929 [2021-11-03 05:17:15,778 INFO L226 Difference]: Without dead ends: 927 [2021-11-03 05:17:15,779 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:17:15,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-03 05:17:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 381. [2021-11-03 05:17:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.2737127371273713) internal successors, (470), 380 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2021-11-03 05:17:15,819 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 44 [2021-11-03 05:17:15,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:15,820 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2021-11-03 05:17:15,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2021-11-03 05:17:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:17:15,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:15,826 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:15,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:16,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:16,041 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:17:16,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-03 05:17:16,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:16,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100076765] [2021-11-03 05:17:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:16,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:16,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:16,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:16,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:17:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:16,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:17:16,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:16,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:16,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:16,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100076765] [2021-11-03 05:17:16,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100076765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:16,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:16,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:17:16,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100334214] [2021-11-03 05:17:16,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:16,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:16,873 INFO L87 Difference]: Start difference. First operand 381 states and 470 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:19,431 INFO L93 Difference]: Finished difference Result 1293 states and 1622 transitions. [2021-11-03 05:17:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:19,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 05:17:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:19,437 INFO L225 Difference]: With dead ends: 1293 [2021-11-03 05:17:19,437 INFO L226 Difference]: Without dead ends: 958 [2021-11-03 05:17:19,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:19,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-03 05:17:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 473. [2021-11-03 05:17:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 461 states have (on average 1.2603036876355749) internal successors, (581), 472 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 581 transitions. [2021-11-03 05:17:19,473 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 581 transitions. Word has length 51 [2021-11-03 05:17:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:19,475 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 581 transitions. [2021-11-03 05:17:19,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 581 transitions. [2021-11-03 05:17:19,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 05:17:19,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:19,481 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:19,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:19,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:19,698 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:17:19,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:19,698 INFO L85 PathProgramCache]: Analyzing trace with hash 493379014, now seen corresponding path program 1 times [2021-11-03 05:17:19,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:19,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229893595] [2021-11-03 05:17:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:19,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:19,700 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:19,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:17:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:20,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:20,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:20,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:20,335 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:20,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229893595] [2021-11-03 05:17:20,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229893595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:20,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:20,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:20,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157929805] [2021-11-03 05:17:20,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:20,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:20,338 INFO L87 Difference]: Start difference. First operand 473 states and 581 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:20,427 INFO L93 Difference]: Finished difference Result 903 states and 1118 transitions. [2021-11-03 05:17:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:20,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 05:17:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:20,431 INFO L225 Difference]: With dead ends: 903 [2021-11-03 05:17:20,432 INFO L226 Difference]: Without dead ends: 476 [2021-11-03 05:17:20,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-03 05:17:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-11-03 05:17:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 464 states have (on average 1.2586206896551724) internal successors, (584), 475 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 584 transitions. [2021-11-03 05:17:20,458 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 584 transitions. Word has length 52 [2021-11-03 05:17:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:20,459 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 584 transitions. [2021-11-03 05:17:20,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 584 transitions. [2021-11-03 05:17:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 05:17:20,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:20,462 INFO L513 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] [2021-11-03 05:17:20,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 05:17:20,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:20,676 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:17:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1169148346, now seen corresponding path program 1 times [2021-11-03 05:17:20,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:20,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373010432] [2021-11-03 05:17:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:20,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:20,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:20,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:20,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:17:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:21,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:21,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:21,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:21,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:21,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373010432] [2021-11-03 05:17:21,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373010432] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:21,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1702646649] [2021-11-03 05:17:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:21,488 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:21,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:17:21,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:17:21,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 05:17:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:21,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:21,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:17:22,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:17:22,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1702646649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:22,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:17:22,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 14 [2021-11-03 05:17:22,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088302899] [2021-11-03 05:17:22,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:17:22,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:22,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:17:22,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:17:22,565 INFO L87 Difference]: Start difference. First operand 476 states and 584 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:28,283 INFO L93 Difference]: Finished difference Result 2984 states and 3768 transitions. [2021-11-03 05:17:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:17:28,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 05:17:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:28,299 INFO L225 Difference]: With dead ends: 2984 [2021-11-03 05:17:28,299 INFO L226 Difference]: Without dead ends: 2554 [2021-11-03 05:17:28,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:17:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-11-03 05:17:28,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 658. [2021-11-03 05:17:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 646 states have (on average 1.2337461300309598) internal successors, (797), 657 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:28,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 797 transitions. [2021-11-03 05:17:28,360 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 797 transitions. Word has length 54 [2021-11-03 05:17:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:28,360 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 797 transitions. [2021-11-03 05:17:28,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 797 transitions. [2021-11-03 05:17:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 05:17:28,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:28,364 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 05:17:28,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:28,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-03 05:17:28,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:28,781 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:17:28,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1213483017, now seen corresponding path program 1 times [2021-11-03 05:17:28,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:28,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537270355] [2021-11-03 05:17:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:28,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:28,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:28,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:28,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:17:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:29,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:29,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:29,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:29,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:29,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537270355] [2021-11-03 05:17:29,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537270355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:29,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1414324377] [2021-11-03 05:17:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:29,815 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:17:29,818 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:17:29,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 05:17:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:30,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:30,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:30,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:30,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1414324377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:30,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788830140] [2021-11-03 05:17:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:30,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:17:30,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:17:30,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:17:30,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 05:17:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:31,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:17:31,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:31,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:17:31,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:17:31,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:17:31,696 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 05:17:31,696 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 [2021-11-03 05:17:31,779 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 05:17:31,780 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 [2021-11-03 05:17:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:17:31,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:17:32,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788830140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:32,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:17:32,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-03 05:17:32,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442188301] [2021-11-03 05:17:32,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:32,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:17:32,026 INFO L87 Difference]: Start difference. First operand 658 states and 797 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:41,913 INFO L93 Difference]: Finished difference Result 885 states and 1084 transitions. [2021-11-03 05:17:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:17:41,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 05:17:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:41,920 INFO L225 Difference]: With dead ends: 885 [2021-11-03 05:17:41,920 INFO L226 Difference]: Without dead ends: 822 [2021-11-03 05:17:41,920 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:17:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-03 05:17:41,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 736. [2021-11-03 05:17:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 724 states have (on average 1.2458563535911602) internal successors, (902), 735 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 902 transitions. [2021-11-03 05:17:41,959 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 902 transitions. Word has length 82 [2021-11-03 05:17:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:41,959 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 902 transitions. [2021-11-03 05:17:41,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 902 transitions. [2021-11-03 05:17:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:17:41,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:41,961 INFO L513 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] [2021-11-03 05:17:41,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:42,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:42,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:42,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:42,579 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:17:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 1 times [2021-11-03 05:17:42,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:42,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824454402] [2021-11-03 05:17:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:42,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:42,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:42,581 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:42,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:17:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:43,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:43,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:43,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:43,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:43,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824454402] [2021-11-03 05:17:43,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824454402] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:43,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [304681083] [2021-11-03 05:17:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:43,786 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:43,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:17:43,787 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:17:43,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:17:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:44,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:44,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:44,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:45,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [304681083] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:45,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932702266] [2021-11-03 05:17:45,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:45,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:17:45,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:17:45,040 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:17:45,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 05:17:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:45,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:17:45,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:17:45,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:17:46,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932702266] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:46,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:17:46,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 05:17:46,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702215225] [2021-11-03 05:17:46,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:17:46,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:46,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:17:46,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:17:46,115 INFO L87 Difference]: Start difference. First operand 736 states and 902 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:46,454 INFO L93 Difference]: Finished difference Result 1446 states and 1794 transitions. [2021-11-03 05:17:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:17:46,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-03 05:17:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:46,460 INFO L225 Difference]: With dead ends: 1446 [2021-11-03 05:17:46,460 INFO L226 Difference]: Without dead ends: 756 [2021-11-03 05:17:46,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:17:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-03 05:17:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-11-03 05:17:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 744 states have (on average 1.239247311827957) internal successors, (922), 755 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 922 transitions. [2021-11-03 05:17:46,502 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 922 transitions. Word has length 84 [2021-11-03 05:17:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:46,503 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 922 transitions. [2021-11-03 05:17:46,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 922 transitions. [2021-11-03 05:17:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 05:17:46,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:46,505 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:46,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:46,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-03 05:17:46,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:47,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:47,120 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-03 05:17:47,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1971016961, now seen corresponding path program 2 times [2021-11-03 05:17:47,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:47,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794467288] [2021-11-03 05:17:47,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:17:47,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:47,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:47,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:47,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 05:17:56,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:17:56,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:17:56,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:17:56,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:17:57,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:17:57,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:57,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794467288] [2021-11-03 05:17:57,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794467288] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:57,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [371819058] [2021-11-03 05:17:57,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:17:57,719 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:57,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:17:57,720 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:17:57,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 05:18:41,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:18:41,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:18:41,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 05:18:41,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:18:42,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 05:18:42,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [371819058] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:18:42,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358679383] [2021-11-03 05:18:42,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:18:42,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:42,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:42,433 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:42,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ab6057d-3883-4058-9caf-17a003cae63a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process