./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/s3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG --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 d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG --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 d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:26:30,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:26:30,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:26:31,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:26:31,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:26:31,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:26:31,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:26:31,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:26:31,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:26:31,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:26:31,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:26:31,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:26:31,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:26:31,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:26:31,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:26:31,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:26:31,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:26:31,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:26:31,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:26:31,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:26:31,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:26:31,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:26:31,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:26:31,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:26:31,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:26:31,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:26:31,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:26:31,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:26:31,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:26:31,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:26:31,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:26:31,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:26:31,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:26:31,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:26:31,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:26:31,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:26:31,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:26:31,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:26:31,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:26:31,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:26:31,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:26:31,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:26:31,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:26:31,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:26:31,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:26:31,143 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:26:31,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:26:31,143 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:26:31,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:26:31,144 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:26:31,144 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:26:31,151 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:26:31,152 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:26:31,152 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:26:31,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:26:31,153 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:26:31,153 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:26:31,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:26:31,154 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:26:31,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:26:31,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:26:31,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:26:31,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:26:31,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:26:31,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:26:31,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:26:31,156 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:26:31,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:26:31,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:26:31,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:26:31,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:26:31,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:26:31,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:26:31,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:26:31,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:26:31,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:26:31,159 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:26:31,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:26:31,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:26:31,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:26:31,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:26:31,160 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_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 [2021-10-29 05:26:31,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:26:31,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:26:31,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:26:31,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:26:31,529 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:26:31,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loops/s3.i [2021-10-29 05:26:31,625 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data/55fd2a44d/b3f9d6b84c974aed93631998cfe1c968/FLAG2e3dd2895 [2021-10-29 05:26:32,341 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:26:32,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/sv-benchmarks/c/loops/s3.i [2021-10-29 05:26:32,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data/55fd2a44d/b3f9d6b84c974aed93631998cfe1c968/FLAG2e3dd2895 [2021-10-29 05:26:32,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data/55fd2a44d/b3f9d6b84c974aed93631998cfe1c968 [2021-10-29 05:26:32,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:26:32,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:26:32,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:26:32,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:26:32,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:26:32,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:32" (1/1) ... [2021-10-29 05:26:32,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286df2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:32, skipping insertion in model container [2021-10-29 05:26:32,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:32" (1/1) ... [2021-10-29 05:26:32,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:26:32,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:26:33,036 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_d2821d32-d759-4d7b-a884-ce0a0b361d82/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-10-29 05:26:33,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:26:33,061 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) [2021-10-29 05:26:33,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10b8f1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:33, skipping insertion in model container [2021-10-29 05:26:33,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:26:33,062 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:26:33,064 INFO L168 Benchmark]: Toolchain (without parser) took 562.62 ms. Allocated memory is still 96.5 MB. Free memory was 52.9 MB in the beginning and 63.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:26:33,065 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:26:33,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.56 ms. Allocated memory is still 96.5 MB. Free memory was 52.7 MB in the beginning and 63.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:26:33,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 71.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.56 ms. Allocated memory is still 96.5 MB. Free memory was 52.7 MB in the beginning and 63.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:26:35,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:26:35,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:26:35,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:26:35,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:26:35,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:26:35,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:26:35,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:26:35,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:26:35,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:26:35,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:26:35,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:26:35,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:26:35,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:26:35,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:26:35,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:26:35,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:26:35,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:26:35,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:26:35,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:26:35,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:26:35,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:26:35,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:26:35,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:26:35,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:26:35,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:26:35,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:26:35,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:26:35,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:26:35,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:26:35,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:26:35,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:26:35,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:26:35,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:26:35,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:26:35,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:26:35,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:26:35,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:26:35,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:26:35,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:26:35,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:26:35,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:26:35,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:26:35,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:26:35,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:26:35,632 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:26:35,632 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:26:35,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:26:35,633 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:26:35,633 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:26:35,633 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:26:35,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:26:35,635 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:26:35,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:26:35,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:26:35,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:26:35,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:26:35,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:26:35,636 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:26:35,636 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:26:35,636 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:26:35,637 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:26:35,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:26:35,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:26:35,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:26:35,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:26:35,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:26:35,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:26:35,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:26:35,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:26:35,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:26:35,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:26:35,639 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:26:35,639 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:26:35,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:26:35,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:26:35,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:26:35,640 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_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 [2021-10-29 05:26:36,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:26:36,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:26:36,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:26:36,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:26:36,071 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:26:36,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loops/s3.i [2021-10-29 05:26:36,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data/afd64fa66/67d37de830b641328aabaf5a214dc4a1/FLAGfa0fcd8c3 [2021-10-29 05:26:36,924 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:26:36,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/sv-benchmarks/c/loops/s3.i [2021-10-29 05:26:36,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data/afd64fa66/67d37de830b641328aabaf5a214dc4a1/FLAGfa0fcd8c3 [2021-10-29 05:26:37,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/data/afd64fa66/67d37de830b641328aabaf5a214dc4a1 [2021-10-29 05:26:37,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:26:37,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:26:37,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:26:37,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:26:37,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:26:37,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:37" (1/1) ... [2021-10-29 05:26:37,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc85cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:37, skipping insertion in model container [2021-10-29 05:26:37,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:37" (1/1) ... [2021-10-29 05:26:37,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:26:37,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:26:37,788 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_d2821d32-d759-4d7b-a884-ce0a0b361d82/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-10-29 05:26:37,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:26:37,836 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:26:37,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:26:37,938 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-10-29 05:26:37,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:26:37,959 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:26:38,118 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_d2821d32-d759-4d7b-a884-ce0a0b361d82/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-10-29 05:26:38,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:26:38,156 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:26:38,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38 WrapperNode [2021-10-29 05:26:38,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:26:38,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:26:38,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:26:38,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:26:38,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:26:38,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:26:38,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:26:38,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:26:38,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:26:38,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:26:38,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:26:38,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:26:38,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (1/1) ... [2021-10-29 05:26:38,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:26:38,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:26:38,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:26:38,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:26:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:26:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:26:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:26:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:26:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 05:26:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:26:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:26:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:26:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:26:38,803 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 05:26:49,414 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-29 05:26:49,415 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-29 05:26:49,422 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:26:49,423 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 05:26:49,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:26:49 BoogieIcfgContainer [2021-10-29 05:26:49,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:26:49,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:26:49,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:26:49,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:26:49,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:26:37" (1/3) ... [2021-10-29 05:26:49,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6957db71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:26:49, skipping insertion in model container [2021-10-29 05:26:49,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:38" (2/3) ... [2021-10-29 05:26:49,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6957db71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:26:49, skipping insertion in model container [2021-10-29 05:26:49,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:26:49" (3/3) ... [2021-10-29 05:26:49,433 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2021-10-29 05:26:49,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:26:49,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:26:49,485 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:26:49,491 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 [2021-10-29 05:26:49,491 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:26:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 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) [2021-10-29 05:26:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 05:26:49,515 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:49,516 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] [2021-10-29 05:26:49,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:26:49,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2021-10-29 05:26:49,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:49,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331484603] [2021-10-29 05:26:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:49,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:49,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:49,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:26:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:49,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:26:49,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:50,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:50,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:50,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331484603] [2021-10-29 05:26:50,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331484603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:50,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:50,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:26:50,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159769277] [2021-10-29 05:26:50,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:26:50,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:26:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:50,330 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 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 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:50,494 INFO L93 Difference]: Finished difference Result 375 states and 626 transitions. [2021-10-29 05:26:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:26:50,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-29 05:26:50,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:50,508 INFO L225 Difference]: With dead ends: 375 [2021-10-29 05:26:50,509 INFO L226 Difference]: Without dead ends: 217 [2021-10-29 05:26:50,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-29 05:26:50,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-10-29 05:26:50,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4814814814814814) internal successors, (320), 216 states have internal predecessors, (320), 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) [2021-10-29 05:26:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2021-10-29 05:26:50,566 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 24 [2021-10-29 05:26:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:50,567 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2021-10-29 05:26:50,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2021-10-29 05:26:50,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-29 05:26:50,570 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:50,570 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-29 05:26:50,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:50,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:50,784 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:26:50,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:50,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1495258694, now seen corresponding path program 1 times [2021-10-29 05:26:50,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:50,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071354583] [2021-10-29 05:26:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:50,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:50,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:50,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:26:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:51,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:26:51,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:51,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:51,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:51,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071354583] [2021-10-29 05:26:51,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071354583] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:51,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:51,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:26:51,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400875582] [2021-10-29 05:26:51,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:26:51,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:26:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:51,620 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-10-29 05:26:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:53,827 INFO L93 Difference]: Finished difference Result 628 states and 933 transitions. [2021-10-29 05:26:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:26:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 41 [2021-10-29 05:26:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:53,833 INFO L225 Difference]: With dead ends: 628 [2021-10-29 05:26:53,834 INFO L226 Difference]: Without dead ends: 521 [2021-10-29 05:26:53,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-10-29 05:26:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 421. [2021-10-29 05:26:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.480952380952381) internal successors, (622), 420 states have internal predecessors, (622), 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) [2021-10-29 05:26:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 622 transitions. [2021-10-29 05:26:53,883 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 622 transitions. Word has length 41 [2021-10-29 05:26:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:53,883 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 622 transitions. [2021-10-29 05:26:53,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-10-29 05:26:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 622 transitions. [2021-10-29 05:26:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-29 05:26:53,896 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:53,896 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-10-29 05:26:53,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:54,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:54,097 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:26:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash 924360661, now seen corresponding path program 1 times [2021-10-29 05:26:54,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:54,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783051579] [2021-10-29 05:26:54,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:54,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:54,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:54,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:54,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:26:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:54,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:26:54,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-29 05:26:54,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-29 05:26:55,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:55,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783051579] [2021-10-29 05:26:55,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783051579] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:55,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:55,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:26:55,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466090072] [2021-10-29 05:26:55,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:26:55,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:26:55,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:55,440 INFO L87 Difference]: Start difference. First operand 421 states and 622 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-10-29 05:26:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:57,624 INFO L93 Difference]: Finished difference Result 939 states and 1394 transitions. [2021-10-29 05:26:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:26:57,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 80 [2021-10-29 05:26:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:57,633 INFO L225 Difference]: With dead ends: 939 [2021-10-29 05:26:57,634 INFO L226 Difference]: Without dead ends: 628 [2021-10-29 05:26:57,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:26:57,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-29 05:26:57,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-10-29 05:26:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.4784688995215312) internal successors, (927), 627 states have internal predecessors, (927), 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) [2021-10-29 05:26:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 927 transitions. [2021-10-29 05:26:57,692 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 927 transitions. Word has length 80 [2021-10-29 05:26:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:57,693 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 927 transitions. [2021-10-29 05:26:57,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-10-29 05:26:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 927 transitions. [2021-10-29 05:26:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-29 05:26:57,701 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:57,701 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-10-29 05:26:57,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:26:57,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:57,916 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:26:57,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2021-10-29 05:26:57,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:57,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425378550] [2021-10-29 05:26:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:57,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:57,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:57,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:57,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:26:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:26:58,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:26:58,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:26:58,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:26:58,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:26:58,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:26:58,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:26:58,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:26:58,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:26:58,786 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-10-29 05:26:58,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-10-29 05:26:58,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:26:58,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:26:58,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:26:59,370 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-10-29 05:26:59,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-10-29 05:27:00,986 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:27:00,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-10-29 05:27:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-29 05:27:01,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-29 05:27:01,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:01,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425378550] [2021-10-29 05:27:01,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425378550] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:01,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:01,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-29 05:27:01,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510810192] [2021-10-29 05:27:01,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:27:01,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:01,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:27:01,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:27:01,855 INFO L87 Difference]: Start difference. First operand 628 states and 927 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2021-10-29 05:28:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:28:07,632 INFO L93 Difference]: Finished difference Result 2264 states and 3359 transitions. [2021-10-29 05:28:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:28:07,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 100 [2021-10-29 05:28:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:28:07,648 INFO L225 Difference]: With dead ends: 2264 [2021-10-29 05:28:07,649 INFO L226 Difference]: Without dead ends: 1643 [2021-10-29 05:28:07,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:28:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-10-29 05:28:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 753. [2021-10-29 05:28:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.5106382978723405) internal successors, (1136), 752 states have internal predecessors, (1136), 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) [2021-10-29 05:28:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1136 transitions. [2021-10-29 05:28:07,733 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1136 transitions. Word has length 100 [2021-10-29 05:28:07,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:28:07,734 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1136 transitions. [2021-10-29 05:28:07,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2021-10-29 05:28:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1136 transitions. [2021-10-29 05:28:07,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-29 05:28:07,741 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:28:07,741 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-10-29 05:28:07,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:28:07,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:28:07,963 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:28:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:28:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1223162519, now seen corresponding path program 1 times [2021-10-29 05:28:07,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:28:07,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932640819] [2021-10-29 05:28:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:28:07,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:28:07,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:28:07,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:28:07,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:28:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:28:08,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:28:08,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:28:09,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:09,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:09,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:09,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:09,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:09,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:09,715 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:28:09,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:28:12,000 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:28:12,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:28:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 05:28:12,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:28:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 05:28:12,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:28:12,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932640819] [2021-10-29 05:28:12,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932640819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:28:12,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:28:12,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-29 05:28:12,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984760667] [2021-10-29 05:28:12,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:28:12,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:28:12,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:28:12,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:28:12,517 INFO L87 Difference]: Start difference. First operand 753 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2021-10-29 05:28:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:28:45,409 INFO L93 Difference]: Finished difference Result 1757 states and 2634 transitions. [2021-10-29 05:28:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:28:45,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 100 [2021-10-29 05:28:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:28:45,426 INFO L225 Difference]: With dead ends: 1757 [2021-10-29 05:28:45,426 INFO L226 Difference]: Without dead ends: 1011 [2021-10-29 05:28:45,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:28:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-10-29 05:28:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 873. [2021-10-29 05:28:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5378440366972477) internal successors, (1341), 872 states have internal predecessors, (1341), 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) [2021-10-29 05:28:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1341 transitions. [2021-10-29 05:28:45,492 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1341 transitions. Word has length 100 [2021-10-29 05:28:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:28:45,493 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1341 transitions. [2021-10-29 05:28:45,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2021-10-29 05:28:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1341 transitions. [2021-10-29 05:28:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-29 05:28:45,498 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:28:45,498 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-10-29 05:28:45,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:28:45,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:28:45,722 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:28:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:28:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash -517718612, now seen corresponding path program 1 times [2021-10-29 05:28:45,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:28:45,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565427996] [2021-10-29 05:28:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:28:45,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:28:45,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:28:45,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:28:45,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:28:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:28:47,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:28:47,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:28:47,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:28:47,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:47,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:47,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:47,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:47,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:28:47,978 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:28:47,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:28:48,755 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:28:48,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:28:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 05:28:48,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:28:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 05:28:49,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:28:49,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565427996] [2021-10-29 05:28:49,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565427996] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:28:49,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:28:49,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:28:49,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690896249] [2021-10-29 05:28:49,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:28:49,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:28:49,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:28:49,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:28:49,413 INFO L87 Difference]: Start difference. First operand 873 states and 1341 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2021-10-29 05:29:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:34,469 INFO L93 Difference]: Finished difference Result 2405 states and 3628 transitions. [2021-10-29 05:29:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:29:34,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 115 [2021-10-29 05:29:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:34,485 INFO L225 Difference]: With dead ends: 2405 [2021-10-29 05:29:34,485 INFO L226 Difference]: Without dead ends: 1539 [2021-10-29 05:29:34,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:29:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-10-29 05:29:34,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 931. [2021-10-29 05:29:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 930 states have (on average 1.5204301075268818) internal successors, (1414), 930 states have internal predecessors, (1414), 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) [2021-10-29 05:29:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1414 transitions. [2021-10-29 05:29:34,574 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1414 transitions. Word has length 115 [2021-10-29 05:29:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:34,574 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1414 transitions. [2021-10-29 05:29:34,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2021-10-29 05:29:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1414 transitions. [2021-10-29 05:29:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-29 05:29:34,579 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:34,580 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-10-29 05:29:34,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:34,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:34,808 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:34,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1265744566, now seen corresponding path program 1 times [2021-10-29 05:29:34,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:34,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265599892] [2021-10-29 05:29:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:34,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:34,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:34,810 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:34,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:29:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:35,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:29:35,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:36,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:29:36,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:29:36,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:29:36,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:29:36,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:29:36,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:29:36,710 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:29:36,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:29:37,525 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:29:37,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:29:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 05:29:37,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 05:29:38,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:38,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265599892] [2021-10-29 05:29:38,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265599892] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:38,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:38,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:29:38,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591810012] [2021-10-29 05:29:38,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:29:38,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:29:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:29:38,180 INFO L87 Difference]: Start difference. First operand 931 states and 1414 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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) [2021-10-29 05:30:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:30:06,596 INFO L93 Difference]: Finished difference Result 2578 states and 3869 transitions. [2021-10-29 05:30:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:30:06,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 115 [2021-10-29 05:30:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:30:06,608 INFO L225 Difference]: With dead ends: 2578 [2021-10-29 05:30:06,608 INFO L226 Difference]: Without dead ends: 1657 [2021-10-29 05:30:06,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:30:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-10-29 05:30:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1014. [2021-10-29 05:30:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1013 states have (on average 1.5024679170779862) internal successors, (1522), 1013 states have internal predecessors, (1522), 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) [2021-10-29 05:30:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1522 transitions. [2021-10-29 05:30:06,686 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1522 transitions. Word has length 115 [2021-10-29 05:30:06,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:30:06,687 INFO L470 AbstractCegarLoop]: Abstraction has 1014 states and 1522 transitions. [2021-10-29 05:30:06,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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) [2021-10-29 05:30:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1522 transitions. [2021-10-29 05:30:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-29 05:30:06,690 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:30:06,691 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2021-10-29 05:30:06,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:30:06,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:30:06,907 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:30:06,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:30:06,907 INFO L85 PathProgramCache]: Analyzing trace with hash -647023955, now seen corresponding path program 1 times [2021-10-29 05:30:06,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:30:06,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53195731] [2021-10-29 05:30:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:30:06,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:30:06,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:30:06,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:30:06,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:30:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:30:07,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:30:07,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:30:08,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:08,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:08,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:08,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:08,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:08,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:08,686 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:30:08,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:30:09,668 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:30:09,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:30:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 05:30:09,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:30:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 05:30:10,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:30:10,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53195731] [2021-10-29 05:30:10,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53195731] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:30:10,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:30:10,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:30:10,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932879596] [2021-10-29 05:30:10,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:30:10,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:30:10,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:30:10,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:30:10,231 INFO L87 Difference]: Start difference. First operand 1014 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2021-10-29 05:30:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:30:36,151 INFO L93 Difference]: Finished difference Result 2562 states and 3807 transitions. [2021-10-29 05:30:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:30:36,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 115 [2021-10-29 05:30:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:30:36,162 INFO L225 Difference]: With dead ends: 2562 [2021-10-29 05:30:36,162 INFO L226 Difference]: Without dead ends: 1729 [2021-10-29 05:30:36,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:30:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-10-29 05:30:36,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1130. [2021-10-29 05:30:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 1.5022143489813995) internal successors, (1696), 1129 states have internal predecessors, (1696), 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) [2021-10-29 05:30:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1696 transitions. [2021-10-29 05:30:36,241 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1696 transitions. Word has length 115 [2021-10-29 05:30:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:30:36,241 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1696 transitions. [2021-10-29 05:30:36,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2021-10-29 05:30:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1696 transitions. [2021-10-29 05:30:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-29 05:30:36,245 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:30:36,245 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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] [2021-10-29 05:30:36,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-29 05:30:36,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:30:36,459 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:30:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:30:36,459 INFO L85 PathProgramCache]: Analyzing trace with hash 336272896, now seen corresponding path program 1 times [2021-10-29 05:30:36,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:30:36,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324424390] [2021-10-29 05:30:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:30:36,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:30:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:30:36,461 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:30:36,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:30:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:30:37,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:30:37,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:30:37,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:30:37,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:37,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:37,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:37,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:37,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:30:38,183 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:30:38,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:30:39,018 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:30:39,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:30:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:30:39,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:30:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:30:39,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:30:39,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324424390] [2021-10-29 05:30:39,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324424390] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:30:39,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:30:39,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:30:39,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298006447] [2021-10-29 05:30:39,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:30:39,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:30:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:30:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:30:39,635 INFO L87 Difference]: Start difference. First operand 1130 states and 1696 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2021-10-29 05:31:05,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:05,397 INFO L93 Difference]: Finished difference Result 2873 states and 4263 transitions. [2021-10-29 05:31:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:31:05,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 117 [2021-10-29 05:31:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:05,409 INFO L225 Difference]: With dead ends: 2873 [2021-10-29 05:31:05,409 INFO L226 Difference]: Without dead ends: 1753 [2021-10-29 05:31:05,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:31:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-10-29 05:31:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1136. [2021-10-29 05:31:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 1.4854625550660794) internal successors, (1686), 1135 states have internal predecessors, (1686), 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) [2021-10-29 05:31:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1686 transitions. [2021-10-29 05:31:05,487 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1686 transitions. Word has length 117 [2021-10-29 05:31:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:05,488 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1686 transitions. [2021-10-29 05:31:05,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2021-10-29 05:31:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1686 transitions. [2021-10-29 05:31:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-29 05:31:05,491 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:05,491 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 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] [2021-10-29 05:31:05,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:31:05,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:31:05,706 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:31:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash 475530403, now seen corresponding path program 1 times [2021-10-29 05:31:05,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:31:05,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854914435] [2021-10-29 05:31:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:05,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:31:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:31:05,709 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:31:05,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 05:31:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:06,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:31:06,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:31:06,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:06,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:07,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:07,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:07,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:07,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:07,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:07,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:07,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:07,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:07,470 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:31:07,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:31:08,658 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:31:08,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:31:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:31:08,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:31:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:31:09,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:31:09,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854914435] [2021-10-29 05:31:09,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854914435] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:09,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:09,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:31:09,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39053692] [2021-10-29 05:31:09,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:31:09,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:31:09,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:31:09,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:31:09,300 INFO L87 Difference]: Start difference. First operand 1136 states and 1686 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2021-10-29 05:31:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:31:46,600 INFO L93 Difference]: Finished difference Result 2733 states and 4018 transitions. [2021-10-29 05:31:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:31:46,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 117 [2021-10-29 05:31:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:31:46,612 INFO L225 Difference]: With dead ends: 2733 [2021-10-29 05:31:46,612 INFO L226 Difference]: Without dead ends: 1799 [2021-10-29 05:31:46,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:31:46,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-10-29 05:31:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1243. [2021-10-29 05:31:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 1.4734299516908214) internal successors, (1830), 1242 states have internal predecessors, (1830), 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) [2021-10-29 05:31:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1830 transitions. [2021-10-29 05:31:46,684 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1830 transitions. Word has length 117 [2021-10-29 05:31:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:31:46,684 INFO L470 AbstractCegarLoop]: Abstraction has 1243 states and 1830 transitions. [2021-10-29 05:31:46,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2021-10-29 05:31:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1830 transitions. [2021-10-29 05:31:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-29 05:31:46,688 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:31:46,688 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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] [2021-10-29 05:31:46,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:31:46,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:31:46,911 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:31:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:31:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -760085446, now seen corresponding path program 1 times [2021-10-29 05:31:46,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:31:46,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893588012] [2021-10-29 05:31:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:31:46,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:31:46,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:31:46,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:31:46,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 05:31:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:31:48,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:31:48,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:31:48,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:31:48,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:48,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:48,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:48,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:48,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:31:48,777 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:31:48,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:31:49,686 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:31:49,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:31:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:31:49,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:31:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:31:50,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:31:50,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893588012] [2021-10-29 05:31:50,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893588012] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:31:50,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:31:50,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:31:50,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073406156] [2021-10-29 05:31:50,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:31:50,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:31:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:31:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:31:50,435 INFO L87 Difference]: Start difference. First operand 1243 states and 1830 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2021-10-29 05:32:17,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:32:17,249 INFO L93 Difference]: Finished difference Result 3074 states and 4487 transitions. [2021-10-29 05:32:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:32:17,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 118 [2021-10-29 05:32:17,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:32:17,261 INFO L225 Difference]: With dead ends: 3074 [2021-10-29 05:32:17,261 INFO L226 Difference]: Without dead ends: 1841 [2021-10-29 05:32:17,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:32:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-10-29 05:32:17,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1249. [2021-10-29 05:32:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.453525641025641) internal successors, (1814), 1248 states have internal predecessors, (1814), 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) [2021-10-29 05:32:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1814 transitions. [2021-10-29 05:32:17,349 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1814 transitions. Word has length 118 [2021-10-29 05:32:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:32:17,350 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1814 transitions. [2021-10-29 05:32:17,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2021-10-29 05:32:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1814 transitions. [2021-10-29 05:32:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-29 05:32:17,354 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:17,355 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 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] [2021-10-29 05:32:17,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:17,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:17,571 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:32:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1579061573, now seen corresponding path program 1 times [2021-10-29 05:32:17,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:32:17,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10396247] [2021-10-29 05:32:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:17,573 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:32:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:32:17,574 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:32:17,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 05:32:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:32:19,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:32:19,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:19,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:19,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:19,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:19,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:19,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:19,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:19,827 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:32:19,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:32:20,852 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:32:20,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:32:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:32:21,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:32:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:32:21,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:21,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10396247] [2021-10-29 05:32:21,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10396247] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:32:21,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:21,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:32:21,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072941608] [2021-10-29 05:32:21,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:32:21,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:32:21,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:32:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:32:21,482 INFO L87 Difference]: Start difference. First operand 1249 states and 1814 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2021-10-29 05:32:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:32:54,796 INFO L93 Difference]: Finished difference Result 2999 states and 4334 transitions. [2021-10-29 05:32:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:32:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 119 [2021-10-29 05:32:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:32:54,806 INFO L225 Difference]: With dead ends: 2999 [2021-10-29 05:32:54,806 INFO L226 Difference]: Without dead ends: 1760 [2021-10-29 05:32:54,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:32:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2021-10-29 05:32:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1249. [2021-10-29 05:32:54,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.4310897435897436) internal successors, (1786), 1248 states have internal predecessors, (1786), 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) [2021-10-29 05:32:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1786 transitions. [2021-10-29 05:32:54,877 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1786 transitions. Word has length 119 [2021-10-29 05:32:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:32:54,878 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1786 transitions. [2021-10-29 05:32:54,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2021-10-29 05:32:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1786 transitions. [2021-10-29 05:32:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-29 05:32:54,881 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:32:54,881 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 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] [2021-10-29 05:32:54,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 05:32:55,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:32:55,105 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:32:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:32:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1069684126, now seen corresponding path program 1 times [2021-10-29 05:32:55,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:32:55,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170678364] [2021-10-29 05:32:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:32:55,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:32:55,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:32:55,109 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:32:55,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 05:32:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:32:56,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:32:56,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:32:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:32:56,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:56,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:56,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:56,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:56,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:32:57,052 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:32:57,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:32:58,309 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:32:58,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:32:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:32:58,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:32:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:32:58,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:32:58,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170678364] [2021-10-29 05:32:58,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170678364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:32:58,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:32:58,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:32:58,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999070210] [2021-10-29 05:32:58,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:32:58,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:32:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:32:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:32:58,955 INFO L87 Difference]: Start difference. First operand 1249 states and 1786 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2021-10-29 05:33:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:31,869 INFO L93 Difference]: Finished difference Result 3099 states and 4413 transitions. [2021-10-29 05:33:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:33:31,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 119 [2021-10-29 05:33:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:31,883 INFO L225 Difference]: With dead ends: 3099 [2021-10-29 05:33:31,883 INFO L226 Difference]: Without dead ends: 1860 [2021-10-29 05:33:31,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:33:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2021-10-29 05:33:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1344. [2021-10-29 05:33:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 1.4147431124348473) internal successors, (1900), 1343 states have internal predecessors, (1900), 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) [2021-10-29 05:33:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1900 transitions. [2021-10-29 05:33:31,974 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1900 transitions. Word has length 119 [2021-10-29 05:33:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:31,975 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 1900 transitions. [2021-10-29 05:33:31,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2021-10-29 05:33:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1900 transitions. [2021-10-29 05:33:31,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-29 05:33:31,979 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:31,979 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 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] [2021-10-29 05:33:32,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 05:33:32,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:33:32,209 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:33:32,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash -672153909, now seen corresponding path program 1 times [2021-10-29 05:33:32,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:33:32,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743527917] [2021-10-29 05:33:32,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:32,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:33:32,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:33:32,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:33:32,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-29 05:33:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:33,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:33:33,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:33,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:33:33,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:33:33,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:33:33,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:33:33,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:33:33,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:33:34,465 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:33:34,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:33:35,989 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:33:35,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:33:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:33:36,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:33:36,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:33:36,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743527917] [2021-10-29 05:33:36,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743527917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:33:36,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:33:36,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:33:36,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995794762] [2021-10-29 05:33:36,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:33:36,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:33:36,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:33:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:33:36,673 INFO L87 Difference]: Start difference. First operand 1344 states and 1900 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:34:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:34:05,839 INFO L93 Difference]: Finished difference Result 3153 states and 4457 transitions. [2021-10-29 05:34:05,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:34:05,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-29 05:34:05,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:34:05,852 INFO L225 Difference]: With dead ends: 3153 [2021-10-29 05:34:05,852 INFO L226 Difference]: Without dead ends: 1819 [2021-10-29 05:34:05,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:34:05,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-10-29 05:34:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1360. [2021-10-29 05:34:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 1.4135393671817513) internal successors, (1921), 1359 states have internal predecessors, (1921), 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) [2021-10-29 05:34:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1921 transitions. [2021-10-29 05:34:05,939 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1921 transitions. Word has length 120 [2021-10-29 05:34:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:34:05,940 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1921 transitions. [2021-10-29 05:34:05,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:34:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1921 transitions. [2021-10-29 05:34:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-29 05:34:05,944 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:34:05,945 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 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] [2021-10-29 05:34:05,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-29 05:34:06,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:34:06,166 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:34:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:34:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash 745942391, now seen corresponding path program 1 times [2021-10-29 05:34:06,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:34:06,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024658087] [2021-10-29 05:34:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:34:06,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:34:06,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:34:06,169 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:34:06,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-29 05:34:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:34:07,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:34:07,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:34:07,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:07,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:07,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:07,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:07,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:07,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:08,465 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-29 05:34:08,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-29 05:34:09,814 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-29 05:34:09,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-29 05:34:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:34:09,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:34:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:34:10,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:34:10,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024658087] [2021-10-29 05:34:10,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024658087] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:34:10,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:34:10,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:34:10,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306122059] [2021-10-29 05:34:10,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:34:10,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:34:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:34:10,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:34:10,463 INFO L87 Difference]: Start difference. First operand 1360 states and 1921 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:34:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:34:41,558 INFO L93 Difference]: Finished difference Result 3147 states and 4438 transitions. [2021-10-29 05:34:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:34:41,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-10-29 05:34:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:34:41,569 INFO L225 Difference]: With dead ends: 3147 [2021-10-29 05:34:41,570 INFO L226 Difference]: Without dead ends: 1797 [2021-10-29 05:34:41,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:34:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2021-10-29 05:34:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1360. [2021-10-29 05:34:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 1.401766004415011) internal successors, (1905), 1359 states have internal predecessors, (1905), 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) [2021-10-29 05:34:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1905 transitions. [2021-10-29 05:34:41,655 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1905 transitions. Word has length 120 [2021-10-29 05:34:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:34:41,655 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1905 transitions. [2021-10-29 05:34:41,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:34:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1905 transitions. [2021-10-29 05:34:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-29 05:34:41,659 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:34:41,659 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-10-29 05:34:41,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-29 05:34:41,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:34:41,875 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:34:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:34:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash 787843816, now seen corresponding path program 1 times [2021-10-29 05:34:41,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:34:41,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456306144] [2021-10-29 05:34:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:34:41,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:34:41,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:34:41,878 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:34:41,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-29 05:34:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:34:43,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:34:43,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:34:43,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:43,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:43,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:43,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:43,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:34:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:43,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:44,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 113 [2021-10-29 05:34:46,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:46,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:47,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:47,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:34:47,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:47,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 273 treesize of output 221 [2021-10-29 05:34:54,953 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:54,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 186 treesize of output 106 [2021-10-29 05:34:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-10-29 05:34:55,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:34:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-10-29 05:34:56,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:34:56,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456306144] [2021-10-29 05:34:56,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456306144] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:34:56,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:34:56,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-29 05:34:56,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080529849] [2021-10-29 05:34:56,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:34:56,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:34:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:34:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-10-29 05:34:56,208 INFO L87 Difference]: Start difference. First operand 1360 states and 1905 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-10-29 05:36:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:36:14,390 INFO L93 Difference]: Finished difference Result 3077 states and 4309 transitions. [2021-10-29 05:36:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:36:14,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 123 [2021-10-29 05:36:14,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:36:14,404 INFO L225 Difference]: With dead ends: 3077 [2021-10-29 05:36:14,404 INFO L226 Difference]: Without dead ends: 1942 [2021-10-29 05:36:14,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-10-29 05:36:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-10-29 05:36:14,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1264. [2021-10-29 05:36:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1263 states have (on average 1.4085510688836105) internal successors, (1779), 1263 states have internal predecessors, (1779), 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) [2021-10-29 05:36:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1779 transitions. [2021-10-29 05:36:14,483 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1779 transitions. Word has length 123 [2021-10-29 05:36:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:36:14,484 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1779 transitions. [2021-10-29 05:36:14,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-10-29 05:36:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1779 transitions. [2021-10-29 05:36:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-29 05:36:14,488 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:36:14,489 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2021-10-29 05:36:14,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-29 05:36:14,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:36:14,703 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:36:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:36:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2021-10-29 05:36:14,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:36:14,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776744916] [2021-10-29 05:36:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:36:14,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:36:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:36:14,705 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:36:14,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-29 05:36:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:36:21,483 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:36:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:36:27,295 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:36:27,295 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:36:27,296 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:36:27,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-29 05:36:27,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:36:27,522 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:36:27,525 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:36:27,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:36:27 BoogieIcfgContainer [2021-10-29 05:36:27,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:36:27,703 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:36:27,703 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:36:27,704 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:36:27,704 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:26:49" (3/4) ... [2021-10-29 05:36:27,706 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:36:27,857 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:36:27,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:36:27,858 INFO L168 Benchmark]: Toolchain (without parser) took 590754.01 ms. Allocated memory was 73.4 MB in the beginning and 148.9 MB in the end (delta: 75.5 MB). Free memory was 53.0 MB in the beginning and 64.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 105.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:27,859 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:36:27,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1052.05 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 52.8 MB in the beginning and 73.3 MB in the end (delta: -20.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:27,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.73 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 69.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:27,864 INFO L168 Benchmark]: Boogie Preprocessor took 135.26 ms. Allocated memory is still 102.8 MB. Free memory was 69.1 MB in the beginning and 61.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:27,865 INFO L168 Benchmark]: RCFGBuilder took 10990.35 ms. Allocated memory is still 102.8 MB. Free memory was 61.9 MB in the beginning and 60.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:27,865 INFO L168 Benchmark]: TraceAbstraction took 578276.11 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 59.9 MB in the beginning and 31.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:27,866 INFO L168 Benchmark]: Witness Printer took 154.07 ms. Allocated memory is still 148.9 MB. Free memory was 31.6 MB in the beginning and 64.4 MB in the end (delta: -32.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:36:27,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1052.05 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 52.8 MB in the beginning and 73.3 MB in the end (delta: -20.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 119.73 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 69.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 135.26 ms. Allocated memory is still 102.8 MB. Free memory was 69.1 MB in the beginning and 61.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10990.35 ms. Allocated memory is still 102.8 MB. Free memory was 61.9 MB in the beginning and 60.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 578276.11 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 59.9 MB in the beginning and 31.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.1 GB. * Witness Printer took 154.07 ms. Allocated memory is still 148.9 MB. Free memory was 31.6 MB in the beginning and 64.4 MB in the end (delta: -32.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1658]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1065] SSL *s ; [L1069] s = malloc (sizeof (SSL)) [L1070] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1071] EXPR s->s3 [L1071] s->s3->flags = __VERIFIER_nondet_long() [L1072] EXPR s->s3 [L1072] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1073] EXPR s->s3 [L1073] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1074] EXPR s->s3 [L1074] EXPR (s->s3)->tmp.new_cipher [L1074] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1075] EXPR s->s3 [L1075] s->s3->tmp.next_state = __VERIFIER_nondet_int() [L1076] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1077] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1078] s->ctx = malloc(sizeof(SSL_CTX)) [L1079] EXPR s->ctx [L1079] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1080] s->state = 12292 [L1081] s->version = __VERIFIER_nondet_int() [L1082] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1083] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1090] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1091] unsigned long tmp ; [L1092] unsigned long l ; [L1093] long num1 ; [L1094] void (*cb)() ; [L1095] int ret ; [L1096] int new_state ; [L1097] int state ; [L1098] int skip ; [L1099] int *tmp___0 ; [L1100] int tmp___1 = __VERIFIER_nondet_int(); [L1101] int tmp___2 = __VERIFIER_nondet_int(); [L1102] int tmp___3 ; [L1103] int tmp___4 ; [L1104] int tmp___5 ; [L1105] int tmp___6 ; [L1106] int tmp___7 ; [L1107] int tmp___8 ; [L1108] long tmp___9 ; [L1110] int blastFlag ; [L1113] blastFlag = 0 [L1114] s->state = 12292 [L1115] s->hit = __VERIFIER_nondet_int() [L1117] tmp = __VERIFIER_nondet_int() [L1118] cb = (void (*)())((void *)0) [L1119] ret = -1 [L1120] skip = 0 [L1121] tmp___0 = (int*)malloc(sizeof(int)) [L1122] *tmp___0 = 0 [L1123] EXPR s->info_callback VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1123] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1124] EXPR s->info_callback [L1124] cb = s->info_callback [L1132] EXPR s->in_handshake [L1132] s->in_handshake += 1 [L1133] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND TRUE s->state == 12292 [L1249] s->new_session = 1 [L1250] s->state = 4096 [L1251] EXPR s->ctx [L1251] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1251] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1256] s->server = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1257] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1262] EXPR s->version VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1262] COND FALSE !((s->version & 65280) != 768) [L1268] s->type = 4096 [L1269] EXPR s->init_buf VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1269] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1281] tmp___4 = __VERIFIER_nondet_int() [L1282] COND FALSE !(! tmp___4) [L1288] tmp___5 = __VERIFIER_nondet_int() [L1289] COND FALSE !(! tmp___5) [L1295] s->state = 4368 [L1296] EXPR s->ctx [L1296] EXPR (s->ctx)->stats.sess_connect [L1296] (s->ctx)->stats.sess_connect += 1 [L1297] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND TRUE s->state == 4368 [L1301] s->shutdown = 0 [L1302] ret = __VERIFIER_nondet_int() [L1303] COND TRUE blastFlag == 0 [L1304] blastFlag = 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1308] COND FALSE !(ret <= 0) [L1313] s->state = 4384 [L1314] s->init_num = 0 [L1315] EXPR s->bbio [L1315] EXPR s->wbio VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1315] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND TRUE s->state == 4384 [L1323] ret = __VERIFIER_nondet_int() [L1324] COND TRUE blastFlag == 1 [L1325] blastFlag = 2 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1329] COND FALSE !(ret <= 0) [L1334] s->hit VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1334] COND FALSE !(s->hit) [L1337] s->state = 4400 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1339] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1173] COND TRUE s->state == 4400 [L1343] EXPR s->s3 [L1343] EXPR (s->s3)->tmp.new_cipher [L1343] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1343] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1346] ret = __VERIFIER_nondet_int() [L1347] COND TRUE blastFlag == 2 [L1348] blastFlag = 3 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1352] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1358] s->state = 4416 [L1359] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1179] COND TRUE s->state == 4416 [L1363] ret = __VERIFIER_nondet_int() [L1364] COND TRUE blastFlag == 3 [L1365] blastFlag = 4 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1369] COND FALSE !(ret <= 0) [L1374] s->state = 4432 [L1375] s->init_num = 0 [L1376] tmp___6 = __VERIFIER_nondet_int() [L1377] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1185] COND TRUE s->state == 4432 [L1386] ret = __VERIFIER_nondet_int() [L1387] COND FALSE !(blastFlag == 5) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1392] COND FALSE !(ret <= 0) [L1397] s->state = 4448 [L1398] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1185] COND FALSE !(s->state == 4432) [L1188] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1188] COND FALSE !(s->state == 4433) [L1191] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1191] COND TRUE s->state == 4448 [L1402] ret = __VERIFIER_nondet_int() [L1403] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1658] reach_error() VAL [init=1, SSLv3_client_data={-2147483569:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 578.0s, OverallIterations: 17, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 497.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2842 SDtfs, 2964 SDslu, 6583 SDs, 0 SdLazy, 5675 SolverSat, 636 SolverUnsat, 60 SolverUnknown, 0 SolverNotchecked, 480.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3279 GetRequests, 3192 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1360occurred in iteration=14, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 7344 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 14.6s SatisfiabilityAnalysisTime, 46.2s InterpolantComputationTime, 1780 NumberOfCodeBlocks, 1780 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3254 ConstructedInterpolants, 11 QuantifiedInterpolants, 21028 SizeOfPredicates, 79 NumberOfNonLiveVariables, 4765 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 4446/4446 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:36:27,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2821d32-d759-4d7b-a884-ce0a0b361d82/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...