./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.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_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/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_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/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_8d5d2465-f957-4f65-917f-a97a438297d5/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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:58:36,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:58:36,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:58:36,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:58:36,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:58:36,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:58:36,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:58:36,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:58:36,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:58:36,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:58:36,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:58:36,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:58:36,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:58:36,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:58:36,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:58:36,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:58:36,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:58:36,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:58:36,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:58:36,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:58:36,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:58:36,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:58:36,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:58:36,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:58:36,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:58:36,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:58:36,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:58:36,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:58:36,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:58:36,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:58:36,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:58:36,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:58:36,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:58:36,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:58:36,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:58:36,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:58:36,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:58:36,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:58:36,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:58:36,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:58:36,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:58:36,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:58:36,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:58:36,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:58:36,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:58:36,618 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:58:36,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:58:36,619 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:58:36,619 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:58:36,619 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:58:36,625 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:58:36,626 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:58:36,627 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:58:36,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:58:36,627 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:58:36,627 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:58:36,628 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:58:36,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:58:36,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:58:36,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:58:36,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:58:36,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:58:36,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:58:36,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:58:36,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:58:36,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:58:36,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:58:36,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:58:36,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:58:36,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:58:36,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:58:36,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:58:36,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:58:36,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:58:36,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:58:36,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:58:36,634 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:58:36,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:58:36,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:58:36,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:58:36,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:58:36,636 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_8d5d2465-f957-4f65-917f-a97a438297d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2021-11-03 03:58:36,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:58:36,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:58:36,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:58:36,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:58:36,936 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:58:36,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2021-11-03 03:58:37,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data/df2f006d8/7f1f3521bc2d42adab4729720e4f23e4/FLAGdce4aa83f [2021-11-03 03:58:37,648 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:58:37,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2021-11-03 03:58:37,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data/df2f006d8/7f1f3521bc2d42adab4729720e4f23e4/FLAGdce4aa83f [2021-11-03 03:58:37,844 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data/df2f006d8/7f1f3521bc2d42adab4729720e4f23e4 [2021-11-03 03:58:37,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:58:37,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:58:37,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:58:37,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:58:37,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:58:37,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:37" (1/1) ... [2021-11-03 03:58:37,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f35550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:37, skipping insertion in model container [2021-11-03 03:58:37,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:37" (1/1) ... [2021-11-03 03:58:37,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:58:37,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:58:38,403 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_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2021-11-03 03:58:38,598 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_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2021-11-03 03:58:38,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:58:38,620 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 03:58:38,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10dc94e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:38, skipping insertion in model container [2021-11-03 03:58:38,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:58:38,621 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:58:38,625 INFO L168 Benchmark]: Toolchain (without parser) took 772.39 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.1 MB in the beginning and 78.1 MB in the end (delta: -20.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:58:38,626 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 68.4 MB in the beginning and 68.4 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:58:38,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.41 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 57.9 MB in the beginning and 78.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:58:38,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 68.4 MB in the beginning and 68.4 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 767.41 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 57.9 MB in the beginning and 78.1 MB in the end (delta: -20.3 MB). 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: 737]: 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_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/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_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/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_8d5d2465-f957-4f65-917f-a97a438297d5/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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:58:40,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:58:40,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:58:40,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:58:40,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:58:40,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:58:40,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:58:40,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:58:40,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:58:40,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:58:40,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:58:40,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:58:40,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:58:40,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:58:40,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:58:40,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:58:40,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:58:40,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:58:40,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:58:40,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:58:40,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:58:40,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:58:40,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:58:40,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:58:40,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:58:40,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:58:40,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:58:40,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:58:40,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:58:40,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:58:40,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:58:40,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:58:40,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:58:40,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:58:40,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:58:40,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:58:40,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:58:40,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:58:40,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:58:40,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:58:40,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:58:40,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:58:41,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:58:41,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:58:41,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:58:41,040 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:58:41,040 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:58:41,041 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:58:41,041 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:58:41,041 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:58:41,041 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:58:41,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:58:41,044 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:58:41,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:58:41,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:58:41,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:58:41,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:58:41,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:58:41,045 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:58:41,045 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:58:41,046 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:58:41,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:58:41,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:58:41,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:58:41,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:58:41,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:58:41,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:58:41,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:58:41,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:58:41,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:58:41,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:58:41,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:58:41,048 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:58:41,049 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:58:41,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:58:41,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:58:41,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:58:41,050 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_8d5d2465-f957-4f65-917f-a97a438297d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2021-11-03 03:58:41,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:58:41,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:58:41,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:58:41,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:58:41,495 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:58:41,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2021-11-03 03:58:41,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data/e952aa34f/9a65f6a2d7224c039b96e8a0af0f0137/FLAGbbe7ae950 [2021-11-03 03:58:42,246 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:58:42,251 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2021-11-03 03:58:42,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data/e952aa34f/9a65f6a2d7224c039b96e8a0af0f0137/FLAGbbe7ae950 [2021-11-03 03:58:42,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/data/e952aa34f/9a65f6a2d7224c039b96e8a0af0f0137 [2021-11-03 03:58:42,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:58:42,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:58:42,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:58:42,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:58:42,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:58:42,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:42" (1/1) ... [2021-11-03 03:58:42,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fd32c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:42, skipping insertion in model container [2021-11-03 03:58:42,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:58:42" (1/1) ... [2021-11-03 03:58:42,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:58:42,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:58:42,950 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_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2021-11-03 03:58:43,176 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_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2021-11-03 03:58:43,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:58:43,217 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:58:43,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:58:43,281 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_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2021-11-03 03:58:43,371 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_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2021-11-03 03:58:43,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:58:43,379 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:58:43,422 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_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2021-11-03 03:58:43,519 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_8d5d2465-f957-4f65-917f-a97a438297d5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2021-11-03 03:58:43,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:58:43,595 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:58:43,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43 WrapperNode [2021-11-03 03:58:43,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:58:43,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:58:43,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:58:43,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:58:43,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:58:43,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:58:43,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:58:43,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:58:43,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:58:43,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:58:43,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:58:43,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:58:43,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (1/1) ... [2021-11-03 03:58:43,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:58:43,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:58:43,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:58:44,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:58:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:58:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:58:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:58:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:58:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:58:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:58:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:58:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:58:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:58:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:58:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:58:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:58:54,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:58:54,481 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-03 03:58:54,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:54 BoogieIcfgContainer [2021-11-03 03:58:54,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:58:54,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:58:54,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:58:54,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:58:54,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:58:42" (1/3) ... [2021-11-03 03:58:54,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e1c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:54, skipping insertion in model container [2021-11-03 03:58:54,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:58:43" (2/3) ... [2021-11-03 03:58:54,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e1c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:54, skipping insertion in model container [2021-11-03 03:58:54,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:54" (3/3) ... [2021-11-03 03:58:54,498 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-1.i [2021-11-03 03:58:54,504 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:58:54,504 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 03:58:54,571 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:58:54,589 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 03:58:54,589 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 03:58:54,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 251 states have (on average 1.7250996015936255) internal successors, (433), 257 states have internal predecessors, (433), 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 03:58:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 03:58:54,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:54,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:58:54,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:58:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-03 03:58:54,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:58:54,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974701913] [2021-11-03 03:58:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:54,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:58:54,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:58:54,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:58:54,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:58:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:54,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:58:54,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:58:54,946 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 03:58:54,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:58:54,975 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 03:58:54,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:58:54,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974701913] [2021-11-03 03:58:54,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974701913] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:54,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:54,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:58:54,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420992477] [2021-11-03 03:58:54,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:58:54,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:58:55,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:58:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:58:55,006 INFO L87 Difference]: Start difference. First operand has 258 states, 251 states have (on average 1.7250996015936255) internal successors, (433), 257 states have internal predecessors, (433), 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 03:58:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:55,068 INFO L93 Difference]: Finished difference Result 514 states and 864 transitions. [2021-11-03 03:58:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:58:55,070 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 03:58:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:55,089 INFO L225 Difference]: With dead ends: 514 [2021-11-03 03:58:55,089 INFO L226 Difference]: Without dead ends: 254 [2021-11-03 03:58:55,097 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 03:58:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-03 03:58:55,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-03 03:58:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 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 03:58:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-03 03:58:55,186 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-03 03:58:55,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:55,187 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-03 03:58:55,187 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 03:58:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-03 03:58:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 03:58:55,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:55,192 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] [2021-11-03 03:58:55,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:58:55,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:58:55,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:58:55,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-03 03:58:55,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:58:55,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040834994] [2021-11-03 03:58:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:55,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:58:55,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:58:55,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:58:55,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:58:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:55,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:58:55,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:58:55,788 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 03:58:55,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:58:55,948 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 03:58:55,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:58:55,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040834994] [2021-11-03 03:58:55,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040834994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:55,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:55,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:58:55,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958460870] [2021-11-03 03:58:55,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:58:55,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:58:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:58:55,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:58:55,952 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 03:58:56,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:56,261 INFO L93 Difference]: Finished difference Result 589 states and 772 transitions. [2021-11-03 03:58:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:58:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 42 [2021-11-03 03:58:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:56,268 INFO L225 Difference]: With dead ends: 589 [2021-11-03 03:58:56,268 INFO L226 Difference]: Without dead ends: 507 [2021-11-03 03:58:56,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 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 03:58:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-03 03:58:56,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 425. [2021-11-03 03:58:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 419 states have (on average 1.331742243436754) internal successors, (558), 424 states have internal predecessors, (558), 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 03:58:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 558 transitions. [2021-11-03 03:58:56,337 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 558 transitions. Word has length 42 [2021-11-03 03:58:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:56,338 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 558 transitions. [2021-11-03 03:58:56,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 03:58:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 558 transitions. [2021-11-03 03:58:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 03:58:56,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:56,358 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:58:56,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:58:56,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:58:56,559 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:58:56,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1555923977, now seen corresponding path program 1 times [2021-11-03 03:58:56,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:58:56,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657099015] [2021-11-03 03:58:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:56,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:58:56,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:58:56,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:58:56,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:58:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:57,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:58:57,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:58:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 03:58:58,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:58:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 03:58:58,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:58:58,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657099015] [2021-11-03 03:58:58,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657099015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:58:58,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:58:58,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:58:58,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64207105] [2021-11-03 03:58:58,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:58:58,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:58:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:58:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:58:58,781 INFO L87 Difference]: Start difference. First operand 425 states and 558 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 03:58:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:58:58,906 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2021-11-03 03:58:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:58:58,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 238 [2021-11-03 03:58:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:58:58,909 INFO L225 Difference]: With dead ends: 850 [2021-11-03 03:58:58,909 INFO L226 Difference]: Without dead ends: 433 [2021-11-03 03:58:58,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 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 03:58:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-03 03:58:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 431. [2021-11-03 03:58:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2894117647058823) internal successors, (548), 430 states have internal predecessors, (548), 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 03:58:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 548 transitions. [2021-11-03 03:58:58,928 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 548 transitions. Word has length 238 [2021-11-03 03:58:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:58:58,929 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 548 transitions. [2021-11-03 03:58:58,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 03:58:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 548 transitions. [2021-11-03 03:58:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 03:58:58,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:58:58,933 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:58:58,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:58:59,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:58:59,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:58:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:58:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash 370544607, now seen corresponding path program 1 times [2021-11-03 03:58:59,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:58:59,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057134506] [2021-11-03 03:58:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:58:59,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:58:59,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:58:59,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:58:59,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:58:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:58:59,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:58:59,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 03:59:00,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 03:59:01,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:01,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057134506] [2021-11-03 03:59:01,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057134506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:01,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:01,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 03:59:01,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340945916] [2021-11-03 03:59:01,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:59:01,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:59:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:59:01,857 INFO L87 Difference]: Start difference. First operand 431 states and 548 transitions. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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 03:59:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:01,997 INFO L93 Difference]: Finished difference Result 819 states and 1049 transitions. [2021-11-03 03:59:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:59:01,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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 238 [2021-11-03 03:59:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:02,000 INFO L225 Difference]: With dead ends: 819 [2021-11-03 03:59:02,001 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 03:59:02,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:59:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 03:59:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-03 03:59:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 413 states have (on average 1.278450363196126) internal successors, (528), 418 states have internal predecessors, (528), 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 03:59:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 528 transitions. [2021-11-03 03:59:02,018 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 528 transitions. Word has length 238 [2021-11-03 03:59:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:02,018 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 528 transitions. [2021-11-03 03:59:02,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 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 03:59:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 528 transitions. [2021-11-03 03:59:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 03:59:02,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:02,023 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:02,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 03:59:02,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:02,238 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -919406365, now seen corresponding path program 1 times [2021-11-03 03:59:02,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:02,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409491511] [2021-11-03 03:59:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:02,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:02,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:02,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:02,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:59:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:03,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:59:03,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 03:59:03,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 03:59:04,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:04,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409491511] [2021-11-03 03:59:04,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409491511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:04,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:04,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:59:04,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737945358] [2021-11-03 03:59:04,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:59:04,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:04,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:59:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:59:04,901 INFO L87 Difference]: Start difference. First operand 419 states and 528 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 03:59:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:05,336 INFO L93 Difference]: Finished difference Result 789 states and 1004 transitions. [2021-11-03 03:59:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:59:05,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 238 [2021-11-03 03:59:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:05,348 INFO L225 Difference]: With dead ends: 789 [2021-11-03 03:59:05,348 INFO L226 Difference]: Without dead ends: 417 [2021-11-03 03:59:05,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:59:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-03 03:59:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-11-03 03:59:05,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 411 states have (on average 1.2773722627737227) internal successors, (525), 416 states have internal predecessors, (525), 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 03:59:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 525 transitions. [2021-11-03 03:59:05,364 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 525 transitions. Word has length 238 [2021-11-03 03:59:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:05,364 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 525 transitions. [2021-11-03 03:59:05,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 03:59:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 525 transitions. [2021-11-03 03:59:05,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-03 03:59:05,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:05,369 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:05,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:05,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:05,594 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:05,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1266706643, now seen corresponding path program 1 times [2021-11-03 03:59:05,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:05,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451349948] [2021-11-03 03:59:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:05,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:05,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:05,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:59:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:06,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:59:06,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 03:59:07,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 03:59:07,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:07,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451349948] [2021-11-03 03:59:07,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451349948] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:07,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:07,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:59:07,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541506923] [2021-11-03 03:59:07,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:59:07,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:59:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:59:07,817 INFO L87 Difference]: Start difference. First operand 417 states and 525 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 03:59:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:07,938 INFO L93 Difference]: Finished difference Result 805 states and 1032 transitions. [2021-11-03 03:59:07,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:59:07,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 245 [2021-11-03 03:59:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:07,952 INFO L225 Difference]: With dead ends: 805 [2021-11-03 03:59:07,953 INFO L226 Difference]: Without dead ends: 429 [2021-11-03 03:59:07,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 486 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 03:59:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-03 03:59:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-03 03:59:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 423 states have (on average 1.2695035460992907) internal successors, (537), 428 states have internal predecessors, (537), 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 03:59:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 537 transitions. [2021-11-03 03:59:07,979 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 537 transitions. Word has length 245 [2021-11-03 03:59:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:07,979 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 537 transitions. [2021-11-03 03:59:07,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 03:59:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 537 transitions. [2021-11-03 03:59:07,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 03:59:07,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:07,984 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:08,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:08,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:08,207 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash 660379208, now seen corresponding path program 1 times [2021-11-03 03:59:08,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:08,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644166267] [2021-11-03 03:59:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:08,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:08,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:08,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:08,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:59:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:09,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:09,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 03:59:10,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 03:59:10,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:10,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644166267] [2021-11-03 03:59:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644166267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:59:10,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [924094660] [2021-11-03 03:59:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:10,640 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:10,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:59:10,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:59:10,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 03:59:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:11,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:11,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 03:59:12,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 03:59:13,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [924094660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:13,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:59:13,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-03 03:59:13,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17064640] [2021-11-03 03:59:13,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:59:13,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:59:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:59:13,123 INFO L87 Difference]: Start difference. First operand 429 states and 537 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 03:59:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:13,320 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2021-11-03 03:59:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:59:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 248 [2021-11-03 03:59:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:13,324 INFO L225 Difference]: With dead ends: 803 [2021-11-03 03:59:13,324 INFO L226 Difference]: Without dead ends: 471 [2021-11-03 03:59:13,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:59:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-03 03:59:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2021-11-03 03:59:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 463 states have (on average 1.2462203023758098) internal successors, (577), 468 states have internal predecessors, (577), 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 03:59:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 577 transitions. [2021-11-03 03:59:13,355 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 577 transitions. Word has length 248 [2021-11-03 03:59:13,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:13,357 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 577 transitions. [2021-11-03 03:59:13,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 03:59:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 577 transitions. [2021-11-03 03:59:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 03:59:13,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:13,362 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:13,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:13,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:13,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:13,787 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash -372700096, now seen corresponding path program 1 times [2021-11-03 03:59:13,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:13,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598294609] [2021-11-03 03:59:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:13,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:13,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:13,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:13,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:59:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:15,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:15,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 03:59:15,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 03:59:16,510 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:16,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598294609] [2021-11-03 03:59:16,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598294609] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:59:16,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [68416475] [2021-11-03 03:59:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:16,511 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:16,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:59:16,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:59:16,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 03:59:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:18,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:59:18,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 03:59:18,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 03:59:19,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [68416475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:19,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:59:19,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 03:59:19,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534334916] [2021-11-03 03:59:19,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:59:19,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:59:19,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:59:19,593 INFO L87 Difference]: Start difference. First operand 469 states and 577 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 03:59:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:20,459 INFO L93 Difference]: Finished difference Result 1027 states and 1273 transitions. [2021-11-03 03:59:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:59:20,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 248 [2021-11-03 03:59:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:20,464 INFO L225 Difference]: With dead ends: 1027 [2021-11-03 03:59:20,464 INFO L226 Difference]: Without dead ends: 752 [2021-11-03 03:59:20,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:59:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-03 03:59:20,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 740. [2021-11-03 03:59:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.2574931880108993) internal successors, (923), 739 states have internal predecessors, (923), 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 03:59:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 923 transitions. [2021-11-03 03:59:20,494 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 923 transitions. Word has length 248 [2021-11-03 03:59:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:20,495 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 923 transitions. [2021-11-03 03:59:20,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 03:59:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 923 transitions. [2021-11-03 03:59:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-03 03:59:20,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:20,500 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:20,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:20,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:20,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:20,915 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash -292299512, now seen corresponding path program 1 times [2021-11-03 03:59:20,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:20,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899004637] [2021-11-03 03:59:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:20,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:20,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:20,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:20,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:59:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:22,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:22,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 03:59:23,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 03:59:23,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:23,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899004637] [2021-11-03 03:59:23,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899004637] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:59:23,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [384106625] [2021-11-03 03:59:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:23,908 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:23,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:59:23,909 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:59:23,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 03:59:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:25,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:59:25,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 03:59:27,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 03:59:29,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [384106625] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:29,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:59:29,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 03:59:29,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220287552] [2021-11-03 03:59:29,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:59:29,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:29,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:59:29,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:59:29,514 INFO L87 Difference]: Start difference. First operand 740 states and 923 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 03:59:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:30,026 INFO L93 Difference]: Finished difference Result 1052 states and 1305 transitions. [2021-11-03 03:59:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:59:30,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 255 [2021-11-03 03:59:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:30,031 INFO L225 Difference]: With dead ends: 1052 [2021-11-03 03:59:30,031 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 03:59:30,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:59:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 03:59:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 737. [2021-11-03 03:59:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 731 states have (on average 1.2571819425444597) internal successors, (919), 736 states have internal predecessors, (919), 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 03:59:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 919 transitions. [2021-11-03 03:59:30,057 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 919 transitions. Word has length 255 [2021-11-03 03:59:30,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:30,058 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 919 transitions. [2021-11-03 03:59:30,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 03:59:30,059 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 919 transitions. [2021-11-03 03:59:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 03:59:30,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:30,061 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:30,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:30,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:30,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:30,476 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash 24612397, now seen corresponding path program 1 times [2021-11-03 03:59:30,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:30,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596507866] [2021-11-03 03:59:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:30,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:30,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:30,480 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:30,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:59:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:32,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:32,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 03:59:32,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 03:59:33,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:33,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596507866] [2021-11-03 03:59:33,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596507866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:59:33,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [979412319] [2021-11-03 03:59:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:33,666 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:33,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:59:33,666 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:59:33,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 03:59:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:35,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:59:35,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 03:59:36,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 03:59:36,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [979412319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:36,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:59:36,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 03:59:36,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467241417] [2021-11-03 03:59:36,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:59:36,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:59:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:59:36,961 INFO L87 Difference]: Start difference. First operand 737 states and 919 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 03:59:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:37,071 INFO L93 Difference]: Finished difference Result 959 states and 1227 transitions. [2021-11-03 03:59:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:59:37,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 265 [2021-11-03 03:59:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:37,086 INFO L225 Difference]: With dead ends: 959 [2021-11-03 03:59:37,087 INFO L226 Difference]: Without dead ends: 800 [2021-11-03 03:59:37,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:59:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-03 03:59:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 797. [2021-11-03 03:59:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 791 states have (on average 1.2376738305941846) internal successors, (979), 796 states have internal predecessors, (979), 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 03:59:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 979 transitions. [2021-11-03 03:59:37,116 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 979 transitions. Word has length 265 [2021-11-03 03:59:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:37,117 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 979 transitions. [2021-11-03 03:59:37,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 03:59:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 979 transitions. [2021-11-03 03:59:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 03:59:37,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:37,120 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:37,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:37,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-03 03:59:37,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:37,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1170519209, now seen corresponding path program 1 times [2021-11-03 03:59:37,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:37,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613586333] [2021-11-03 03:59:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:37,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:37,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:37,538 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:37,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 03:59:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:39,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:39,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 03:59:40,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 03:59:41,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:41,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613586333] [2021-11-03 03:59:41,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613586333] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:59:41,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905057384] [2021-11-03 03:59:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:41,012 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:41,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:59:41,023 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:59:41,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 03:59:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:43,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:59:43,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 03:59:44,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 03:59:44,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905057384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:44,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:59:44,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 03:59:44,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385434656] [2021-11-03 03:59:44,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:59:44,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:44,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:59:44,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:59:44,876 INFO L87 Difference]: Start difference. First operand 797 states and 979 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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 03:59:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:45,022 INFO L93 Difference]: Finished difference Result 1457 states and 1807 transitions. [2021-11-03 03:59:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:59:45,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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 265 [2021-11-03 03:59:45,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:45,027 INFO L225 Difference]: With dead ends: 1457 [2021-11-03 03:59:45,028 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 03:59:45,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:59:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 03:59:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2021-11-03 03:59:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 740 states have (on average 1.2094594594594594) internal successors, (895), 745 states have internal predecessors, (895), 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 03:59:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 895 transitions. [2021-11-03 03:59:45,055 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 895 transitions. Word has length 265 [2021-11-03 03:59:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:45,056 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 895 transitions. [2021-11-03 03:59:45,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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 03:59:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 895 transitions. [2021-11-03 03:59:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 03:59:45,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:45,059 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:45,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:45,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:45,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:45,494 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1760654349, now seen corresponding path program 1 times [2021-11-03 03:59:45,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:45,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757622801] [2021-11-03 03:59:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:45,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:45,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:45,497 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:45,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 03:59:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:47,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:47,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 03:59:48,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 03:59:49,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:49,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757622801] [2021-11-03 03:59:49,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757622801] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:59:49,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1158714177] [2021-11-03 03:59:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:49,018 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:49,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:59:49,019 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:59:49,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 03:59:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:51,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:59:51,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 03:59:52,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 03:59:52,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1158714177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:52,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:59:52,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 03:59:52,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670252324] [2021-11-03 03:59:52,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:59:52,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:59:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:59:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:59:52,855 INFO L87 Difference]: Start difference. First operand 746 states and 895 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 03:59:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:52,968 INFO L93 Difference]: Finished difference Result 929 states and 1137 transitions. [2021-11-03 03:59:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:59:52,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 265 [2021-11-03 03:59:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:52,974 INFO L225 Difference]: With dead ends: 929 [2021-11-03 03:59:52,974 INFO L226 Difference]: Without dead ends: 702 [2021-11-03 03:59:52,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:59:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-03 03:59:52,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 695. [2021-11-03 03:59:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 689 states have (on average 1.1770682148040639) internal successors, (811), 694 states have internal predecessors, (811), 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 03:59:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 811 transitions. [2021-11-03 03:59:53,003 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 811 transitions. Word has length 265 [2021-11-03 03:59:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:53,004 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 811 transitions. [2021-11-03 03:59:53,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 03:59:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 811 transitions. [2021-11-03 03:59:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 03:59:53,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:53,007 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:53,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:53,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 03:59:53,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:59:53,418 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:59:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:53,418 INFO L85 PathProgramCache]: Analyzing trace with hash -625509349, now seen corresponding path program 1 times [2021-11-03 03:59:53,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:59:53,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932889297] [2021-11-03 03:59:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:53,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:59:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:59:53,421 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:59:53,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 03:59:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:55,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:59:55,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:59:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 03:59:56,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:59:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 03:59:57,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:59:57,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932889297] [2021-11-03 03:59:57,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932889297] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:59:57,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [25753027] [2021-11-03 03:59:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:57,168 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:57,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:59:57,169 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:59:57,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 04:00:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:00,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:00:00,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:00:01,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 04:00:01,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [25753027] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:00:01,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319418078] [2021-11-03 04:00:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:01,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:01,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:01,859 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:01,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 04:00:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:04,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:00:04,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 04:00:05,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 04:00:06,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319418078] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:00:06,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:00:06,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 04:00:06,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809932886] [2021-11-03 04:00:06,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:00:06,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:00:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:00:06,047 INFO L87 Difference]: Start difference. First operand 695 states and 811 transitions. Second operand has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 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 04:00:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:06,618 INFO L93 Difference]: Finished difference Result 1387 states and 1658 transitions. [2021-11-03 04:00:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:00:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 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 265 [2021-11-03 04:00:06,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:06,623 INFO L225 Difference]: With dead ends: 1387 [2021-11-03 04:00:06,623 INFO L226 Difference]: Without dead ends: 735 [2021-11-03 04:00:06,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1578 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 04:00:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-03 04:00:06,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-03 04:00:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 729 states have (on average 1.1673525377229081) internal successors, (851), 734 states have internal predecessors, (851), 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 04:00:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 851 transitions. [2021-11-03 04:00:06,655 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 851 transitions. Word has length 265 [2021-11-03 04:00:06,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:06,656 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 851 transitions. [2021-11-03 04:00:06,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 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 04:00:06,656 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 851 transitions. [2021-11-03 04:00:06,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-03 04:00:06,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:06,659 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:06,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:06,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:07,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:07,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:07,273 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:00:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:07,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1379426587, now seen corresponding path program 2 times [2021-11-03 04:00:07,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:07,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945748496] [2021-11-03 04:00:07,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:00:07,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:07,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:07,276 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:07,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 04:00:10,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:00:10,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:00:10,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:00:10,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 04:00:11,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 04:00:12,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:12,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945748496] [2021-11-03 04:00:12,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945748496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:00:12,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2008553045] [2021-11-03 04:00:12,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:00:12,070 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:00:12,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:00:12,072 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:00:12,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 04:00:17,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:00:17,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:00:17,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:00:17,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 04:00:18,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 04:00:18,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2008553045] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:00:18,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389135478] [2021-11-03 04:00:18,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:00:18,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:18,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:18,785 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:18,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-03 04:00:22,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:00:22,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:00:22,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:00:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 04:00:23,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 04:00:24,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389135478] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:00:24,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:00:24,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-03 04:00:24,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95172179] [2021-11-03 04:00:24,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 04:00:24,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:24,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 04:00:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:00:24,457 INFO L87 Difference]: Start difference. First operand 735 states and 851 transitions. Second operand has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 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 04:00:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:49,299 INFO L93 Difference]: Finished difference Result 3281 states and 3971 transitions. [2021-11-03 04:00:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 04:00:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 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 281 [2021-11-03 04:00:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:49,314 INFO L225 Difference]: With dead ends: 3281 [2021-11-03 04:00:49,315 INFO L226 Difference]: Without dead ends: 2593 [2021-11-03 04:00:49,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1662 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2593, Invalid=8963, Unknown=0, NotChecked=0, Total=11556 [2021-11-03 04:00:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-11-03 04:00:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2211. [2021-11-03 04:00:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2205 states have (on average 1.1551020408163266) internal successors, (2547), 2210 states have internal predecessors, (2547), 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 04:00:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2547 transitions. [2021-11-03 04:00:49,446 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2547 transitions. Word has length 281 [2021-11-03 04:00:49,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:49,447 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2547 transitions. [2021-11-03 04:00:49,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 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 04:00:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2547 transitions. [2021-11-03 04:00:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2021-11-03 04:00:49,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:49,456 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2021-11-03 04:00:49,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:49,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-11-03 04:00:49,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-03 04:00:50,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:50,071 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:00:50,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash -308654593, now seen corresponding path program 3 times [2021-11-03 04:00:50,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:50,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107949425] [2021-11-03 04:00:50,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:00:50,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:50,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:50,076 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:50,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d5d2465-f957-4f65-917f-a97a438297d5/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process