./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/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_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f ............................................................................................................................................. 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_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/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_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:56:57,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:56:57,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:56:57,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:56:57,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:56:57,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:56:57,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:56:57,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:56:57,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:56:57,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:56:57,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:56:57,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:56:57,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:56:57,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:56:57,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:56:57,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:56:57,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:56:57,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:56:57,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:56:57,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:56:57,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:56:57,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:56:57,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:56:57,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:56:57,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:56:57,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:56:57,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:56:57,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:56:57,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:56:57,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:56:57,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:56:57,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:56:57,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:56:57,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:56:57,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:56:57,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:56:57,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:56:57,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:56:57,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:56:57,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:56:57,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:56:57,977 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:56:58,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:56:58,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:56:58,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:56:58,017 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:56:58,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:56:58,018 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:56:58,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:56:58,018 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:56:58,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:56:58,019 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:56:58,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:56:58,020 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:56:58,020 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:56:58,020 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:56:58,021 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:56:58,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:56:58,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:56:58,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:56:58,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:56:58,023 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:56:58,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:56:58,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:56:58,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:56:58,024 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:56:58,024 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:56:58,024 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:56:58,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:56:58,026 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:56:58,026 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:56:58,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:56:58,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:56:58,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:56:58,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:56:58,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:56:58,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:56:58,028 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:56:58,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:56:58,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:56:58,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:56:58,029 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_206c363e-0792-422d-8d36-a9a784794351/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-10-29 05:56:58,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:56:58,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:56:58,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:56:58,354 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:56:58,356 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:56:58,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-29 05:56:58,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data/08fda5d89/5cf3bbb97ca9400f8e4f348fd8a87deb/FLAGcae12965f [2021-10-29 05:56:59,004 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:56:59,005 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-29 05:56:59,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data/08fda5d89/5cf3bbb97ca9400f8e4f348fd8a87deb/FLAGcae12965f [2021-10-29 05:56:59,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data/08fda5d89/5cf3bbb97ca9400f8e4f348fd8a87deb [2021-10-29 05:56:59,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:56:59,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:56:59,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:56:59,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:56:59,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:56:59,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:56:59" (1/1) ... [2021-10-29 05:56:59,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ba98c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:59, skipping insertion in model container [2021-10-29 05:56:59,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:56:59" (1/1) ... [2021-10-29 05:56:59,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:56:59,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:56:59,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:56:59,775 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 05:56:59,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38a02c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:59, skipping insertion in model container [2021-10-29 05:56:59,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:56:59,777 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-29 05:56:59,779 INFO L168 Benchmark]: Toolchain (without parser) took 479.48 ms. Allocated memory is still 96.5 MB. Free memory was 55.0 MB in the beginning and 71.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:56:59,779 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 96.5 MB. Free memory is still 72.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:56:59,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.63 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 71.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:56:59,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 96.5 MB. Free memory is still 72.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 476.63 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 71.1 MB in the end (delta: -16.3 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: 551]: 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 05:57:02,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:57:02,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:57:02,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:57:02,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:57:02,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:57:02,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:57:02,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:57:02,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:57:02,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:57:02,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:57:02,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:57:02,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:57:02,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:57:02,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:57:02,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:57:02,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:57:02,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:57:02,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:57:02,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:57:02,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:57:02,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:57:02,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:57:02,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:57:02,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:57:02,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:57:02,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:57:02,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:57:02,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:57:02,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:57:02,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:57:02,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:57:02,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:57:02,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:57:02,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:57:02,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:57:02,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:57:02,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:57:02,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:57:02,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:57:02,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:57:02,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 05:57:02,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:57:02,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:57:02,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:57:02,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:57:02,179 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:57:02,179 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:57:02,179 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:57:02,179 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:57:02,180 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:57:02,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:57:02,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:57:02,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:57:02,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:57:02,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:57:02,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:57:02,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:57:02,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:57:02,183 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:57:02,184 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:57:02,184 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:57:02,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:57:02,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:57:02,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:57:02,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:57:02,185 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:57:02,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:57:02,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:57:02,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:57:02,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:57:02,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:57:02,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:57:02,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:57:02,186 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:57:02,187 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:57:02,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:57:02,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:57:02,187 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_206c363e-0792-422d-8d36-a9a784794351/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-10-29 05:57:02,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:57:02,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:57:02,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:57:02,586 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:57:02,587 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:57:02,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-29 05:57:02,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data/0fb784d37/6cf75635b4124ff093484010a578bd68/FLAG1fefba6d6 [2021-10-29 05:57:03,275 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:57:03,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-29 05:57:03,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data/0fb784d37/6cf75635b4124ff093484010a578bd68/FLAG1fefba6d6 [2021-10-29 05:57:03,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/data/0fb784d37/6cf75635b4124ff093484010a578bd68 [2021-10-29 05:57:03,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:57:03,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:57:03,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:57:03,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:57:03,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:57:03,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:57:03" (1/1) ... [2021-10-29 05:57:03,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1e4200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:03, skipping insertion in model container [2021-10-29 05:57:03,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:57:03" (1/1) ... [2021-10-29 05:57:03,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:57:03,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:57:03,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:57:04,003 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-29 05:57:04,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:57:04,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:57:04,108 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:57:04,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:57:04,180 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:57:04,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04 WrapperNode [2021-10-29 05:57:04,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:57:04,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:57:04,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:57:04,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:57:04,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:57:04,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:57:04,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:57:04,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:57:04,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:57:04,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:57:04,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:57:04,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:57:04,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (1/1) ... [2021-10-29 05:57:04,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:57:04,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:57:04,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:57:04,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:57:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:57:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:57:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:57:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 05:57:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:57:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:57:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 05:57:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:57:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:57:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:57:05,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:57:05,273 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-10-29 05:57:05,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:57:05 BoogieIcfgContainer [2021-10-29 05:57:05,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:57:05,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:57:05,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:57:05,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:57:05,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:57:03" (1/3) ... [2021-10-29 05:57:05,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc2b087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:57:05, skipping insertion in model container [2021-10-29 05:57:05,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:04" (2/3) ... [2021-10-29 05:57:05,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc2b087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:57:05, skipping insertion in model container [2021-10-29 05:57:05,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:57:05" (3/3) ... [2021-10-29 05:57:05,283 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0102-1.i [2021-10-29 05:57:05,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:57:05,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-10-29 05:57:05,354 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:57:05,362 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 05:57:05,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-10-29 05:57:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 136 states have internal predecessors, (151), 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 05:57:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:57:05,402 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:05,403 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:57:05,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:05,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:05,413 INFO L85 PathProgramCache]: Analyzing trace with hash 28828812, now seen corresponding path program 1 times [2021-10-29 05:57:05,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:05,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035766822] [2021-10-29 05:57:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:05,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:05,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:05,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:05,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:57:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:05,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:57:05,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:05,577 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 05:57:05,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:05,594 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 05:57:05,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:05,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035766822] [2021-10-29 05:57:05,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035766822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:05,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:05,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:57:05,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368229084] [2021-10-29 05:57:05,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:57:05,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:57:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:57:05,624 INFO L87 Difference]: Start difference. First operand has 137 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 136 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 05:57:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:05,652 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2021-10-29 05:57:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:57:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-29 05:57:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:05,667 INFO L225 Difference]: With dead ends: 137 [2021-10-29 05:57:05,667 INFO L226 Difference]: Without dead ends: 135 [2021-10-29 05:57:05,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:57:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-29 05:57:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-10-29 05:57:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 71 states have (on average 1.971830985915493) internal successors, (140), 134 states have internal predecessors, (140), 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 05:57:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2021-10-29 05:57:05,717 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 5 [2021-10-29 05:57:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:05,718 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2021-10-29 05:57:05,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 05:57:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2021-10-29 05:57:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:57:05,719 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:05,719 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:57:05,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:05,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:05,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:05,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash 889540459, now seen corresponding path program 1 times [2021-10-29 05:57:05,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:05,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389926294] [2021-10-29 05:57:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:05,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:05,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:05,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:57:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:05,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:57:05,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:06,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:06,153 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 05:57:06,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:06,294 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 05:57:06,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:06,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389926294] [2021-10-29 05:57:06,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389926294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:06,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:06,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-29 05:57:06,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626604279] [2021-10-29 05:57:06,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:57:06,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:06,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:57:06,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:57:06,299 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:07,284 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2021-10-29 05:57:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:57:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:57:07,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:07,288 INFO L225 Difference]: With dead ends: 135 [2021-10-29 05:57:07,288 INFO L226 Difference]: Without dead ends: 135 [2021-10-29 05:57:07,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:57:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-29 05:57:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-10-29 05:57:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 71 states have (on average 1.943661971830986) internal successors, (138), 132 states have internal predecessors, (138), 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 05:57:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2021-10-29 05:57:07,299 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 6 [2021-10-29 05:57:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:07,299 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2021-10-29 05:57:07,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2021-10-29 05:57:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:57:07,300 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:07,300 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:57:07,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:07,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:07,511 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash 889540458, now seen corresponding path program 1 times [2021-10-29 05:57:07,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:07,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033070591] [2021-10-29 05:57:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:07,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:07,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:07,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:07,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:57:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:07,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:57:07,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:07,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:07,645 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 05:57:07,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:07,675 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 05:57:07,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:07,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033070591] [2021-10-29 05:57:07,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033070591] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:07,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:07,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:57:07,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230035263] [2021-10-29 05:57:07,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:57:07,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:07,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:57:07,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:57:07,681 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 05:57:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:08,023 INFO L93 Difference]: Finished difference Result 175 states and 183 transitions. [2021-10-29 05:57:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:57:08,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-29 05:57:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:08,025 INFO L225 Difference]: With dead ends: 175 [2021-10-29 05:57:08,025 INFO L226 Difference]: Without dead ends: 175 [2021-10-29 05:57:08,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:57:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-29 05:57:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 129. [2021-10-29 05:57:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 71 states have (on average 1.8873239436619718) internal successors, (134), 128 states have internal predecessors, (134), 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 05:57:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2021-10-29 05:57:08,048 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 6 [2021-10-29 05:57:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:08,049 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2021-10-29 05:57:08,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 05:57:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2021-10-29 05:57:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:57:08,051 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:08,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:08,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:08,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:08,263 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:08,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1986689261, now seen corresponding path program 1 times [2021-10-29 05:57:08,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:08,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415263535] [2021-10-29 05:57:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:08,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:08,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:08,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:08,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:57:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:08,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:57:08,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:08,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:08,416 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 05:57:08,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:08,519 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 05:57:08,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:08,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415263535] [2021-10-29 05:57:08,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415263535] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:08,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:08,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-29 05:57:08,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157807678] [2021-10-29 05:57:08,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:57:08,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:08,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:57:08,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:57:08,521 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 05:57:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:08,788 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2021-10-29 05:57:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:57:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:57:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:08,790 INFO L225 Difference]: With dead ends: 134 [2021-10-29 05:57:08,796 INFO L226 Difference]: Without dead ends: 134 [2021-10-29 05:57:08,797 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:57:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-29 05:57:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2021-10-29 05:57:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 71 states have (on average 1.8591549295774648) internal successors, (132), 126 states have internal predecessors, (132), 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 05:57:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2021-10-29 05:57:08,804 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 10 [2021-10-29 05:57:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:08,805 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2021-10-29 05:57:08,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 05:57:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2021-10-29 05:57:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:57:08,806 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:08,806 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:08,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:09,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:09,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:09,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1986689262, now seen corresponding path program 1 times [2021-10-29 05:57:09,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:09,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758773314] [2021-10-29 05:57:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:09,018 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:09,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:09,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:09,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:57:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:09,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:57:09,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:09,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:09,156 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 05:57:09,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:09,177 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 05:57:09,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:09,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758773314] [2021-10-29 05:57:09,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758773314] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:09,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:09,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:57:09,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93997350] [2021-10-29 05:57:09,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:57:09,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:57:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:57:09,181 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:09,396 INFO L93 Difference]: Finished difference Result 174 states and 182 transitions. [2021-10-29 05:57:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:57:09,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:57:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:09,397 INFO L225 Difference]: With dead ends: 174 [2021-10-29 05:57:09,397 INFO L226 Difference]: Without dead ends: 174 [2021-10-29 05:57:09,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:57:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-29 05:57:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 125. [2021-10-29 05:57:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 71 states have (on average 1.8309859154929577) internal successors, (130), 124 states have internal predecessors, (130), 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 05:57:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2021-10-29 05:57:09,406 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 10 [2021-10-29 05:57:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:09,406 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2021-10-29 05:57:09,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2021-10-29 05:57:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:57:09,407 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:09,407 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:09,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:09,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:09,616 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:09,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:09,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2052066035, now seen corresponding path program 1 times [2021-10-29 05:57:09,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:09,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429225678] [2021-10-29 05:57:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:09,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:09,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:09,618 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:09,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:57:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:09,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:57:09,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:09,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:09,808 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 05:57:09,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-10-29 05:57:09,934 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 05:57:09,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:10,014 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 05:57:10,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:10,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429225678] [2021-10-29 05:57:10,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429225678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:10,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:10,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-29 05:57:10,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877538175] [2021-10-29 05:57:10,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:57:10,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:57:10,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:57:10,017 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 05:57:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:10,569 INFO L93 Difference]: Finished difference Result 175 states and 183 transitions. [2021-10-29 05:57:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:57:10,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:57:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:10,571 INFO L225 Difference]: With dead ends: 175 [2021-10-29 05:57:10,571 INFO L226 Difference]: Without dead ends: 175 [2021-10-29 05:57:10,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:57:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-29 05:57:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 123. [2021-10-29 05:57:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.8028169014084507) internal successors, (128), 122 states have internal predecessors, (128), 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 05:57:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2021-10-29 05:57:10,596 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 12 [2021-10-29 05:57:10,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:10,596 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2021-10-29 05:57:10,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 05:57:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2021-10-29 05:57:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:57:10,597 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:10,597 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:10,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:10,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:10,806 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2052066036, now seen corresponding path program 1 times [2021-10-29 05:57:10,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:10,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188005623] [2021-10-29 05:57:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:10,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:10,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:10,808 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:10,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:57:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:10,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-29 05:57:10,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:10,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:10,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:11,134 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 05:57:11,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-10-29 05:57:11,147 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 05:57:11,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-10-29 05:57:11,263 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 05:57:11,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:13,071 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 05:57:13,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:13,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188005623] [2021-10-29 05:57:13,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188005623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:13,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:13,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 05:57:13,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247563896] [2021-10-29 05:57:13,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:57:13,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:57:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:57:13,074 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 05:57:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:35,997 INFO L93 Difference]: Finished difference Result 169 states and 177 transitions. [2021-10-29 05:57:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:57:35,998 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:57:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:36,000 INFO L225 Difference]: With dead ends: 169 [2021-10-29 05:57:36,000 INFO L226 Difference]: Without dead ends: 169 [2021-10-29 05:57:36,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:57:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-29 05:57:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 121. [2021-10-29 05:57:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 71 states have (on average 1.7746478873239437) internal successors, (126), 120 states have internal predecessors, (126), 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 05:57:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-10-29 05:57:36,006 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 12 [2021-10-29 05:57:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:36,006 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-10-29 05:57:36,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 05:57:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-10-29 05:57:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:57:36,007 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:36,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:36,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-29 05:57:36,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:36,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:36,231 INFO L85 PathProgramCache]: Analyzing trace with hash 645470996, now seen corresponding path program 1 times [2021-10-29 05:57:36,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:36,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918223944] [2021-10-29 05:57:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:36,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:36,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:36,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:57:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:36,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:57:36,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:36,434 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 05:57:36,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:36,467 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 05:57:36,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:36,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918223944] [2021-10-29 05:57:36,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918223944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:36,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:36,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:57:36,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896006046] [2021-10-29 05:57:36,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:57:36,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:57:36,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:57:36,471 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 05:57:36,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:36,902 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2021-10-29 05:57:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:57:36,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-10-29 05:57:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:36,903 INFO L225 Difference]: With dead ends: 172 [2021-10-29 05:57:36,903 INFO L226 Difference]: Without dead ends: 172 [2021-10-29 05:57:36,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:57:36,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-29 05:57:36,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 118. [2021-10-29 05:57:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 71 states have (on average 1.732394366197183) internal successors, (123), 117 states have internal predecessors, (123), 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 05:57:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-10-29 05:57:36,908 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 14 [2021-10-29 05:57:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:36,908 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-10-29 05:57:36,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 05:57:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-10-29 05:57:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:57:36,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:36,909 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:36,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:37,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:37,118 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:37,118 INFO L85 PathProgramCache]: Analyzing trace with hash 645470997, now seen corresponding path program 1 times [2021-10-29 05:57:37,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:37,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468023327] [2021-10-29 05:57:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:37,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:37,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:37,122 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:37,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:57:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:37,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:57:37,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:37,430 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 05:57:37,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:37,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-29 05:57:37,847 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 05:57:37,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:37,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468023327] [2021-10-29 05:57:37,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468023327] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:37,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:37,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-29 05:57:37,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664398227] [2021-10-29 05:57:37,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 05:57:37,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:37,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 05:57:37,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-29 05:57:37,850 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 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 05:57:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:39,926 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2021-10-29 05:57:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-29 05:57:39,928 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 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 14 [2021-10-29 05:57:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:39,929 INFO L225 Difference]: With dead ends: 132 [2021-10-29 05:57:39,930 INFO L226 Difference]: Without dead ends: 132 [2021-10-29 05:57:39,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2021-10-29 05:57:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-29 05:57:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2021-10-29 05:57:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 114 states have internal predecessors, (120), 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 05:57:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-10-29 05:57:39,934 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 14 [2021-10-29 05:57:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:39,934 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-10-29 05:57:39,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 14 states have internal predecessors, (26), 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 05:57:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-10-29 05:57:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:57:39,935 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:39,935 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:39,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:40,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:40,144 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1465235593, now seen corresponding path program 1 times [2021-10-29 05:57:40,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:40,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279775275] [2021-10-29 05:57:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:40,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:40,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:40,147 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:40,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 05:57:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:40,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:57:40,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:40,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:40,406 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 05:57:40,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:40,458 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 05:57:40,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:40,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279775275] [2021-10-29 05:57:40,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279775275] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:40,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:40,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:57:40,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531697130] [2021-10-29 05:57:40,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:57:40,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:57:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:57:40,461 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:40,941 INFO L93 Difference]: Finished difference Result 168 states and 176 transitions. [2021-10-29 05:57:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:57:40,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 05:57:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:40,943 INFO L225 Difference]: With dead ends: 168 [2021-10-29 05:57:40,943 INFO L226 Difference]: Without dead ends: 168 [2021-10-29 05:57:40,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:57:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-29 05:57:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 110. [2021-10-29 05:57:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 71 states have (on average 1.619718309859155) internal successors, (115), 109 states have internal predecessors, (115), 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 05:57:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2021-10-29 05:57:40,947 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 15 [2021-10-29 05:57:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:40,947 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2021-10-29 05:57:40,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2021-10-29 05:57:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:57:40,948 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:40,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:40,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:41,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:41,152 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:41,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1465235592, now seen corresponding path program 1 times [2021-10-29 05:57:41,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:41,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654412863] [2021-10-29 05:57:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:41,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:41,153 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:41,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 05:57:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:41,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 05:57:41,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:41,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:41,485 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 05:57:41,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:41,777 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 05:57:41,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:41,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654412863] [2021-10-29 05:57:41,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654412863] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:41,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:41,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:57:41,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709743101] [2021-10-29 05:57:41,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:57:41,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:41,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:57:41,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:57:41,779 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 05:57:42,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:42,640 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-10-29 05:57:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:57:42,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 15 [2021-10-29 05:57:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:42,642 INFO L225 Difference]: With dead ends: 118 [2021-10-29 05:57:42,642 INFO L226 Difference]: Without dead ends: 118 [2021-10-29 05:57:42,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:57:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-29 05:57:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-10-29 05:57:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 105 states have internal predecessors, (111), 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 05:57:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2021-10-29 05:57:42,646 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 15 [2021-10-29 05:57:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:42,646 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2021-10-29 05:57:42,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 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 05:57:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2021-10-29 05:57:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:57:42,647 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:42,647 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:42,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:42,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:42,859 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:57:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 657868666, now seen corresponding path program 1 times [2021-10-29 05:57:42,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:42,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491004529] [2021-10-29 05:57:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:42,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:42,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:42,861 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:42,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 05:57:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:43,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 05:57:43,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:43,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:43,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:57:43,246 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-29 05:57:43,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-29 05:57:43,332 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:57:43,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-10-29 05:57:43,523 INFO L354 Elim1Store]: treesize reduction 562, result has 2.9 percent of original size [2021-10-29 05:57:43,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 27 [2021-10-29 05:57:43,631 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 05:57:43,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2021-10-29 05:57:43,717 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 05:57:43,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:43,781 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-10-29 05:57:43,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-29 05:57:43,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:57:43,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-29 05:57:50,231 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_24 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_24 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_24) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_24)))))) is different from false [2021-10-29 05:57:52,305 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_24 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_24 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_24) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_24)))))) is different from false [2021-10-29 05:57:56,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:56,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491004529] [2021-10-29 05:57:56,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 05:57:56,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1299185246] [2021-10-29 05:57:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:56,009 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:57:56,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:57:56,024 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:57:56,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-29 05:57:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:56,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 05:57:56,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:56,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:57:56,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:57:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:57:56,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-29 05:57:56,619 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:57:56,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-29 05:57:56,816 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-29 05:57:56,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 25 [2021-10-29 05:57:56,987 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:57:56,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-10-29 05:57:57,010 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 05:57:57,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:57,082 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-10-29 05:57:57,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-29 05:57:57,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:57:57,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-29 05:58:04,099 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_25))))) (= (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_25 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_25) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base))) is different from false [2021-10-29 05:58:06,157 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_25))))))) is different from false [2021-10-29 05:58:06,287 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 05:58:06,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1299185246] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:58:06,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:58:06,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 15 [2021-10-29 05:58:06,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805879063] [2021-10-29 05:58:06,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-29 05:58:06,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:58:06,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-29 05:58:06,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=395, Unknown=5, NotChecked=172, Total=650 [2021-10-29 05:58:06,289 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 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 05:58:08,405 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_25))))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| c_ULTIMATE.start_insert_top_~top~0.base)))) (= (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (= c_ULTIMATE.start_insert_top_~top~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_create_sub_list_~sub.base))))) (= c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv8 32))) is different from false [2021-10-29 05:58:33,888 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_25 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_25) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_25))))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| c_ULTIMATE.start_insert_top_~top~0.base)))) (= (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))) c_ULTIMATE.start_create_sub_list_~sub.base) (= c_ULTIMATE.start_insert_top_~top~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_create_sub_list_~sub.base))))) (= c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv8 32)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_ULTIMATE.start___list_add_~prev.base)) (_ bv1 1)))) is different from false [2021-10-29 05:58:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:58:34,206 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2021-10-29 05:58:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-29 05:58:34,207 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 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 17 [2021-10-29 05:58:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:58:34,208 INFO L225 Difference]: With dead ends: 166 [2021-10-29 05:58:34,208 INFO L226 Difference]: Without dead ends: 166 [2021-10-29 05:58:34,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=190, Invalid=819, Unknown=7, NotChecked=390, Total=1406 [2021-10-29 05:58:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-29 05:58:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 116. [2021-10-29 05:58:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 115 states have internal predecessors, (122), 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 05:58:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2021-10-29 05:58:34,213 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 17 [2021-10-29 05:58:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:58:34,213 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2021-10-29 05:58:34,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 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 05:58:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2021-10-29 05:58:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:58:34,214 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:58:34,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:58:34,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 05:58:34,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-29 05:58:34,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 05:58:34,615 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-10-29 05:58:34,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:58:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash 657868667, now seen corresponding path program 1 times [2021-10-29 05:58:34,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:58:34,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520224330] [2021-10-29 05:58:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:58:34,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:58:34,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:58:34,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:58:34,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-29 05:58:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:58:34,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-29 05:58:34,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:58:34,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:58:34,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:58:35,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:58:35,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 05:58:35,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:58:35,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-29 05:58:35,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:58:35,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-29 05:58:35,192 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-29 05:58:35,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-10-29 05:58:35,218 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 05:58:35,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-29 05:58:35,531 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-29 05:58:35,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-10-29 05:58:35,654 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-29 05:58:35,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-10-29 05:58:35,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 05:58:35,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 05:58:35,988 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 05:58:35,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:58:36,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:58:36,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-10-29 05:58:36,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:58:36,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-10-29 05:58:59,672 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_26 (_ BitVec 32))) (or (and (forall ((ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.offset)))) (store .cse1 v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select .cse1 v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_13) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_15) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_16))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse3 (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32))) (.cse4 (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse5 (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse6 (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.offset)))) (store .cse2 v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select .cse2 v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse3 v_DerPreprocessor_14) .cse4 v_DerPreprocessor_15) .cse5 v_DerPreprocessor_16))) c_ULTIMATE.start_create_sub_list_~sub.base) .cse6)) (select (store |c_#length| v_ULTIMATE.start_insert_sub_~sub~0.base_26 (_ bv12 32)) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse7 v_ULTIMATE.start_insert_sub_~sub~0.base_26 (store (store (store (store (select .cse7 v_ULTIMATE.start_insert_sub_~sub~0.base_26) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse3 v_DerPreprocessor_10) .cse4 v_DerPreprocessor_11) .cse5 v_DerPreprocessor_12))) c_ULTIMATE.start_create_sub_list_~sub.base) .cse6)))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_26)))))) is different from false [2021-10-29 06:00:26,068 WARN L207 SmtUtils]: Spent 1.43 m on a formula simplification that was a NOOP. DAG size: 1805 [2021-10-29 06:00:26,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:00:26,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520224330] [2021-10-29 06:00:26,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 06:00:26,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1472952949] [2021-10-29 06:00:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:00:26,821 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 06:00:26,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 06:00:26,827 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 06:00:26,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-29 06:00:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:00:27,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-29 06:00:27,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:00:27,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 06:00:27,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 06:00:27,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 06:00:27,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 06:00:27,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:00:27,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-29 06:00:27,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:00:27,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-29 06:00:27,601 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-29 06:00:27,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-10-29 06:00:27,633 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 06:00:27,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-29 06:00:27,917 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-29 06:00:27,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-10-29 06:00:28,033 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-29 06:00:28,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-10-29 06:00:28,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 06:00:28,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 06:00:28,228 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 06:00:28,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:00:28,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:00:28,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-10-29 06:00:28,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:00:28,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-10-29 06:00:46,366 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_27 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_27))))))) (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse0 (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse3 (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_21) .cse0 v_DerPreprocessor_22) .cse1 v_DerPreprocessor_23) .cse2 v_DerPreprocessor_24)) c_ULTIMATE.start_create_sub_list_~sub.base) .cse3)) (select (store |c_#length| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse0 v_DerPreprocessor_18) .cse1 v_DerPreprocessor_19) .cse2 v_DerPreprocessor_20)) c_ULTIMATE.start_create_sub_list_~sub.base) .cse3))))) (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_21) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_22) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_24)) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))))) is different from false [2021-10-29 06:00:48,682 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_insert_sub_~sub~0.base_27 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse1 (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset)) (.cse4 (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.offset)))) (store .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select .cse0 v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_21) .cse1 v_DerPreprocessor_22) .cse2 v_DerPreprocessor_23) .cse3 v_DerPreprocessor_24))) c_ULTIMATE.start_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_ULTIMATE.start_insert_sub_~sub~0.base_27 (_ bv12 32)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.base)))) (store .cse5 v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select .cse5 v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20))) c_ULTIMATE.start_create_sub_list_~sub.base) .cse4))))) (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (ULTIMATE.start_insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_create_sub_list_~sub.base) c_ULTIMATE.start_create_sub_list_~sub.offset c_ULTIMATE.start_create_sub_list_~sub.offset)))) (store .cse7 v_ULTIMATE.start_insert_sub_~sub~0.base_27 (store (store (store (store (select .cse7 v_ULTIMATE.start_insert_sub_~sub~0.base_27) ULTIMATE.start_insert_sub_~sub~0.offset v_DerPreprocessor_21) (bvadd ULTIMATE.start_insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_22) (bvadd (_ bv2 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) ULTIMATE.start_insert_sub_~sub~0.offset) v_DerPreprocessor_24))) c_ULTIMATE.start_create_sub_list_~sub.base) (bvadd c_ULTIMATE.start_create_sub_list_~sub.offset (_ bv4 32))))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_insert_sub_~sub~0.base_27))))))))) is different from false [2021-10-29 06:00:51,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 06:00:51,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858853442] [2021-10-29 06:00:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:00:51,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:00:51,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:00:51,117 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:00:51,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-29 06:00:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:00:51,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-29 06:00:51,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:00:51,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 06:00:51,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 06:00:51,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 06:00:51,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:00:51,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-29 06:00:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:00:51,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-29 06:00:51,891 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-29 06:00:51,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-10-29 06:00:51,923 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-29 06:00:51,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-29 06:00:52,165 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-29 06:00:52,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 88 [2021-10-29 06:00:52,331 INFO L354 Elim1Store]: treesize reduction 516, result has 2.8 percent of original size [2021-10-29 06:00:52,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 40 [2021-10-29 06:00:52,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 06:00:52,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-29 06:00:52,542 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 06:00:52,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:00:52,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:00:52,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-10-29 06:00:52,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:00:52,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 294 [2021-10-29 06:01:48,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:01:49,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 06:02:16,725 WARN L207 SmtUtils]: Spent 27.66 s on a formula simplification that was a NOOP. DAG size: 1332 [2021-10-29 06:02:16,974 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-29 06:02:16,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9330607 treesize of output 9330606 [2021-10-29 06:02:44,376 WARN L207 SmtUtils]: Spent 27.40 s on a formula simplification that was a NOOP. DAG size: 1331 [2021-10-29 06:03:10,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 06:03:10,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:03:10,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 06:03:10,570 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 06:03:10,570 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 06:03:10,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-29 06:03:10,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 06:03:10,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 06:03:10,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 06:03:10,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 06:03:10,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-29 06:03:10,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 06:03:10,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 06:03:10,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-29 06:03:10,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-29 06:03:10,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-29 06:03:10,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-29 06:03:10,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-29 06:03:10,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-29 06:03:10,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-29 06:03:10,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-29 06:03:10,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-29 06:03:10,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-29 06:03:10,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-29 06:03:10,581 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-29 06:03:10,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-29 06:03:10,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-29 06:03:10,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-29 06:03:10,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-29 06:03:10,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-29 06:03:10,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-29 06:03:10,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-29 06:03:10,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-29 06:03:10,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-29 06:03:10,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-29 06:03:10,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-29 06:03:10,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-29 06:03:10,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-29 06:03:10,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-29 06:03:10,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-29 06:03:10,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-29 06:03:10,584 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-29 06:03:10,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-29 06:03:10,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-29 06:03:10,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-29 06:03:10,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-29 06:03:10,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-29 06:03:10,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-29 06:03:10,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-29 06:03:10,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-29 06:03:10,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-29 06:03:10,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-29 06:03:10,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-29 06:03:10,586 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-29 06:03:10,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-29 06:03:10,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION [2021-10-29 06:03:10,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION [2021-10-29 06:03:10,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION [2021-10-29 06:03:10,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION [2021-10-29 06:03:10,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 06:03:10,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:03:10,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-29 06:03:10,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-29 06:03:11,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-29 06:03:11,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:11,203 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:03:11,206 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:03:11,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:03:11 BoogieIcfgContainer [2021-10-29 06:03:11,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:03:11,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:03:11,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:03:11,216 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:03:11,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:57:05" (3/4) ... [2021-10-29 06:03:11,219 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 06:03:11,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:03:11,220 INFO L168 Benchmark]: Toolchain (without parser) took 367642.83 ms. Allocated memory was 65.0 MB in the beginning and 400.6 MB in the end (delta: 335.5 MB). Free memory was 43.1 MB in the beginning and 235.2 MB in the end (delta: -192.1 MB). Peak memory consumption was 147.2 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:11,220 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:03:11,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.72 ms. Allocated memory is still 65.0 MB. Free memory was 43.0 MB in the beginning and 36.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:11,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.16 ms. Allocated memory is still 65.0 MB. Free memory was 36.0 MB in the beginning and 33.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:11,222 INFO L168 Benchmark]: Boogie Preprocessor took 88.23 ms. Allocated memory is still 65.0 MB. Free memory was 33.5 MB in the beginning and 31.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:11,222 INFO L168 Benchmark]: RCFGBuilder took 923.18 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 30.9 MB in the beginning and 39.8 MB in the end (delta: -8.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:11,222 INFO L168 Benchmark]: TraceAbstraction took 365938.01 ms. Allocated memory was 81.8 MB in the beginning and 400.6 MB in the end (delta: 318.8 MB). Free memory was 39.5 MB in the beginning and 235.2 MB in the end (delta: -195.8 MB). Peak memory consumption was 228.4 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:11,223 INFO L168 Benchmark]: Witness Printer took 3.80 ms. Allocated memory is still 400.6 MB. Free memory is still 235.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:03:11,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 602.72 ms. Allocated memory is still 65.0 MB. Free memory was 43.0 MB in the beginning and 36.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.16 ms. Allocated memory is still 65.0 MB. Free memory was 36.0 MB in the beginning and 33.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.23 ms. Allocated memory is still 65.0 MB. Free memory was 33.5 MB in the beginning and 31.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 923.18 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 30.9 MB in the beginning and 39.8 MB in the end (delta: -8.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 365938.01 ms. Allocated memory was 81.8 MB in the beginning and 400.6 MB in the end (delta: 318.8 MB). Free memory was 39.5 MB in the beginning and 235.2 MB in the end (delta: -195.8 MB). Peak memory consumption was 228.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.80 ms. Allocated memory is still 400.6 MB. Free memory is still 235.2 MB. There was no memory consumed. 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 - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L602] struct list_head top = { &(top), &(top) }; [L587] struct top_list *top = malloc(sizeof(*top)); [L588] COND FALSE !(!top) [L579] sub->prev = sub [L580] sub->next = sub [L571] struct sub_list *sub = malloc(sizeof(*sub)); [L572] COND FALSE !(!sub) [L574] sub->number = 0 [L538] head->prev [L531] next->prev = new [L532] new->next = next [L533] new->prev = prev [L534] prev->next = new - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 137 locations, 64 error locations. Started 1 CEGAR loops. OverallTime: 365.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 57.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 936 SDtfs, 3097 SDslu, 1609 SDs, 0 SdLazy, 2221 SolverSat, 195 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 22.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 200 SyntacticMatches, 8 SemanticMatches, 116 ConstructedPredicates, 6 IntricatePredicates, 2 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 53.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=0, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 395 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 139.1s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 280 ConstructedInterpolants, 24 QuantifiedInterpolants, 2330 SizeOfPredicates, 119 NumberOfNonLiveVariables, 1289 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-10-29 06:03:11,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_206c363e-0792-422d-8d36-a9a784794351/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...