./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:13:33,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:13:33,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:13:33,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:13:33,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:13:33,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:13:33,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:13:33,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:13:33,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:13:33,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:13:33,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:13:33,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:13:33,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:13:33,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:13:33,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:13:33,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:13:33,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:13:33,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:13:33,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:13:33,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:13:33,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:13:33,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:13:33,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:13:33,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:13:33,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:13:33,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:13:33,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:13:33,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:13:33,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:13:33,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:13:33,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:13:33,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:13:33,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:13:33,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:13:33,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:13:33,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:13:33,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:13:33,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:13:33,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:13:33,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:13:33,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:13:33,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:13:33,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:13:33,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:13:33,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:13:33,962 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:13:33,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:13:33,962 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:13:33,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:13:33,963 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:13:33,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:13:33,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:13:33,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:13:33,963 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:13:33,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:13:33,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:13:33,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:13:33,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:13:33,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:13:33,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:13:33,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:13:33,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:13:33,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:13:33,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:13:33,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:13:33,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:13:33,967 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:13:33,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:13:33,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:13:33,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:13:33,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:13:33,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:13:33,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:13:33,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:13:33,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:13:33,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:13:33,969 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:13:33,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:13:33,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:13:33,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:13:33,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:13:33,970 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_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae [2021-11-07 02:13:34,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:13:34,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:13:34,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:13:34,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:13:34,316 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:13:34,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2021-11-07 02:13:34,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data/2324e3ad4/992efefb9e0e4f65b2e67e7fdd10941d/FLAG48ad760e1 [2021-11-07 02:13:35,197 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:13:35,202 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2021-11-07 02:13:35,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data/2324e3ad4/992efefb9e0e4f65b2e67e7fdd10941d/FLAG48ad760e1 [2021-11-07 02:13:35,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data/2324e3ad4/992efefb9e0e4f65b2e67e7fdd10941d [2021-11-07 02:13:35,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:13:35,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:13:35,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:13:35,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:13:35,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:13:35,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:13:35" (1/1) ... [2021-11-07 02:13:35,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4305948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:35, skipping insertion in model container [2021-11-07 02:13:35,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:13:35" (1/1) ... [2021-11-07 02:13:35,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:13:35,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:13:35,905 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2021-11-07 02:13:36,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:13:36,182 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:13:36,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e7732e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:36, skipping insertion in model container [2021-11-07 02:13:36,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:13:36,184 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:13:36,186 INFO L168 Benchmark]: Toolchain (without parser) took 874.68 ms. Allocated memory is still 100.7 MB. Free memory was 60.3 MB in the beginning and 55.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:13:36,187 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 80.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:13:36,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.77 ms. Allocated memory is still 100.7 MB. Free memory was 60.1 MB in the beginning and 55.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:13:36,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 80.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 869.77 ms. Allocated memory is still 100.7 MB. Free memory was 60.1 MB in the beginning and 55.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:13:38,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:13:38,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:13:38,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:13:38,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:13:38,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:13:38,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:13:38,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:13:38,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:13:38,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:13:38,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:13:38,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:13:38,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:13:38,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:13:38,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:13:38,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:13:38,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:13:38,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:13:38,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:13:38,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:13:38,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:13:38,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:13:38,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:13:38,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:13:38,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:13:38,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:13:38,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:13:38,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:13:38,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:13:38,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:13:38,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:13:38,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:13:38,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:13:38,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:13:38,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:13:38,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:13:38,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:13:38,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:13:38,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:13:38,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:13:38,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:13:38,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:13:38,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:13:38,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:13:38,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:13:38,925 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:13:38,926 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:13:38,926 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:13:38,926 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:13:38,926 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:13:38,926 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:13:38,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:13:38,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:13:38,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:13:38,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:13:38,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:13:38,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:13:38,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:13:38,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:13:38,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:13:38,929 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:13:38,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:13:38,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:13:38,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:13:38,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:13:38,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:13:38,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:13:38,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:13:38,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:13:38,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:13:38,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:13:38,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:13:38,932 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:13:38,932 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:13:38,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:13:38,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:13:38,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:13:38,933 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_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa6de94809ad211882523114a33a27b3a82ed66d6bff27089fdf2c6fcaa93aae [2021-11-07 02:13:39,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:13:39,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:13:39,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:13:39,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:13:39,448 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:13:39,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2021-11-07 02:13:39,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data/b5a419be7/09a13eb740a94fc09a185c7e9375c927/FLAG1e8a7c144 [2021-11-07 02:13:40,405 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:13:40,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i [2021-11-07 02:13:40,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data/b5a419be7/09a13eb740a94fc09a185c7e9375c927/FLAG1e8a7c144 [2021-11-07 02:13:40,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/data/b5a419be7/09a13eb740a94fc09a185c7e9375c927 [2021-11-07 02:13:40,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:13:40,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:13:40,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:13:40,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:13:40,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:13:40,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:13:40" (1/1) ... [2021-11-07 02:13:40,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613ebd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:40, skipping insertion in model container [2021-11-07 02:13:40,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:13:40" (1/1) ... [2021-11-07 02:13:40,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:13:40,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:13:41,289 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2021-11-07 02:13:41,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:13:41,676 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:13:41,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:13:41,744 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2021-11-07 02:13:41,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:13:41,988 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:13:42,057 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-3.i[33022,33035] [2021-11-07 02:13:42,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:13:42,308 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:13:42,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42 WrapperNode [2021-11-07 02:13:42,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:13:42,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:13:42,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:13:42,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:13:42,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:13:42,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:13:42,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:13:42,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:13:42,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:13:42,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:13:42,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:13:42,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:13:42,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (1/1) ... [2021-11-07 02:13:42,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:13:42,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:13:42,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:13:42,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:13:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:13:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:13:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:13:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:13:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:13:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:13:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:13:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:13:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:13:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:13:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:13:42,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:13:58,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:13:58,096 INFO L299 CfgBuilder]: Removed 224 assume(true) statements. [2021-11-07 02:13:58,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:13:58 BoogieIcfgContainer [2021-11-07 02:13:58,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:13:58,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:13:58,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:13:58,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:13:58,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:13:40" (1/3) ... [2021-11-07 02:13:58,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d6a769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:13:58, skipping insertion in model container [2021-11-07 02:13:58,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:13:42" (2/3) ... [2021-11-07 02:13:58,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d6a769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:13:58, skipping insertion in model container [2021-11-07 02:13:58,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:13:58" (3/3) ... [2021-11-07 02:13:58,108 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-3.i [2021-11-07 02:13:58,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:13:58,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-07 02:13:58,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:13:58,175 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:13:58,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-07 02:13:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 520 states, 503 states have (on average 1.7435387673956262) internal successors, (877), 519 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:13:58,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:13:58,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:13:58,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:13:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:13:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-07 02:13:58,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:13:58,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144797273] [2021-11-07 02:13:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:58,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:13:58,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:13:58,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:13:58,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:13:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:58,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:13:58,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:58,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:58,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:13:58,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144797273] [2021-11-07 02:13:58,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144797273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:13:58,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:13:58,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:13:58,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483349699] [2021-11-07 02:13:58,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:13:58,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:13:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:13:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:13:58,734 INFO L87 Difference]: Start difference. First operand has 520 states, 503 states have (on average 1.7435387673956262) internal successors, (877), 519 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:13:58,879 INFO L93 Difference]: Finished difference Result 1038 states and 1752 transitions. [2021-11-07 02:13:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:13:58,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-07 02:13:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:13:58,912 INFO L225 Difference]: With dead ends: 1038 [2021-11-07 02:13:58,912 INFO L226 Difference]: Without dead ends: 465 [2021-11-07 02:13:58,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:13:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-07 02:13:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-07 02:13:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-07 02:13:59,025 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-07 02:13:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:13:59,026 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-07 02:13:59,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-07 02:13:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:13:59,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:13:59,033 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:13:59,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:13:59,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:13:59,253 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:13:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:13:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-07 02:13:59,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:13:59,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517760398] [2021-11-07 02:13:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:59,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:13:59,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:13:59,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:13:59,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:13:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:59,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:13:59,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:13:59,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:00,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:00,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517760398] [2021-11-07 02:14:00,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517760398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:00,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:00,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:14:00,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721441249] [2021-11-07 02:14:00,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:14:00,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:00,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:14:00,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:14:00,074 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:00,293 INFO L93 Difference]: Finished difference Result 756 states and 989 transitions. [2021-11-07 02:14:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:14:00,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:14:00,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:00,299 INFO L225 Difference]: With dead ends: 756 [2021-11-07 02:14:00,299 INFO L226 Difference]: Without dead ends: 469 [2021-11-07 02:14:00,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:14:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-07 02:14:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 468. [2021-11-07 02:14:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 452 states have (on average 1.334070796460177) internal successors, (603), 467 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 603 transitions. [2021-11-07 02:14:00,336 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 603 transitions. Word has length 44 [2021-11-07 02:14:00,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:00,336 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 603 transitions. [2021-11-07 02:14:00,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 603 transitions. [2021-11-07 02:14:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:14:00,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:00,339 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:00,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:00,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:00,543 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:00,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:00,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1615141200, now seen corresponding path program 1 times [2021-11-07 02:14:00,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:00,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061027792] [2021-11-07 02:14:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:00,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:00,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:00,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:00,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:14:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:00,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:14:00,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:01,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:01,567 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:01,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061027792] [2021-11-07 02:14:01,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061027792] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:01,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:01,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 02:14:01,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435412004] [2021-11-07 02:14:01,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:14:01,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:14:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:14:01,571 INFO L87 Difference]: Start difference. First operand 468 states and 603 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:01,760 INFO L93 Difference]: Finished difference Result 729 states and 939 transitions. [2021-11-07 02:14:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:14:01,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:14:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:01,765 INFO L225 Difference]: With dead ends: 729 [2021-11-07 02:14:01,765 INFO L226 Difference]: Without dead ends: 462 [2021-11-07 02:14:01,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:14:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-07 02:14:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2021-11-07 02:14:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 446 states have (on average 1.3295964125560538) internal successors, (593), 461 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 593 transitions. [2021-11-07 02:14:01,781 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 593 transitions. Word has length 44 [2021-11-07 02:14:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:01,782 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 593 transitions. [2021-11-07 02:14:01,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 593 transitions. [2021-11-07 02:14:01,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:14:01,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:01,785 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:01,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:01,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:01,999 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:01,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1883778186, now seen corresponding path program 1 times [2021-11-07 02:14:02,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:02,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954515532] [2021-11-07 02:14:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:02,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:02,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:02,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:02,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:14:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:02,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:14:02,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:02,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:02,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:02,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:02,601 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 02:14:02,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 02:14:02,689 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 02:14:02,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 02:14:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:02,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:03,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:03,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954515532] [2021-11-07 02:14:03,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954515532] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:03,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:03,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:14:03,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510362391] [2021-11-07 02:14:03,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:14:03,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:03,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:14:03,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:14:03,057 INFO L87 Difference]: Start difference. First operand 462 states and 593 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:19,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:19,028 INFO L93 Difference]: Finished difference Result 825 states and 1057 transitions. [2021-11-07 02:14:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:14:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:14:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:19,033 INFO L225 Difference]: With dead ends: 825 [2021-11-07 02:14:19,033 INFO L226 Difference]: Without dead ends: 537 [2021-11-07 02:14:19,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:14:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-07 02:14:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 464. [2021-11-07 02:14:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 448 states have (on average 1.328125) internal successors, (595), 463 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 595 transitions. [2021-11-07 02:14:19,053 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 595 transitions. Word has length 44 [2021-11-07 02:14:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:19,054 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 595 transitions. [2021-11-07 02:14:19,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 595 transitions. [2021-11-07 02:14:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 02:14:19,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:19,064 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:19,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:19,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:19,281 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:19,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1640597416, now seen corresponding path program 1 times [2021-11-07 02:14:19,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:19,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216717072] [2021-11-07 02:14:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:19,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:19,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:19,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:14:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:19,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:14:19,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:20,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:20,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:20,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216717072] [2021-11-07 02:14:20,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216717072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:20,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:20,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:14:20,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867316293] [2021-11-07 02:14:20,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:14:20,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:14:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:14:20,472 INFO L87 Difference]: Start difference. First operand 464 states and 595 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:20,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:20,662 INFO L93 Difference]: Finished difference Result 1017 states and 1310 transitions. [2021-11-07 02:14:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:14:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 02:14:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:20,667 INFO L225 Difference]: With dead ends: 1017 [2021-11-07 02:14:20,668 INFO L226 Difference]: Without dead ends: 557 [2021-11-07 02:14:20,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:14:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-07 02:14:20,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 467. [2021-11-07 02:14:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.3082039911308203) internal successors, (590), 466 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 590 transitions. [2021-11-07 02:14:20,691 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 590 transitions. Word has length 97 [2021-11-07 02:14:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:20,693 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 590 transitions. [2021-11-07 02:14:20,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 590 transitions. [2021-11-07 02:14:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 02:14:20,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:20,698 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:20,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:20,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:20,917 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:20,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:20,918 INFO L85 PathProgramCache]: Analyzing trace with hash -35071002, now seen corresponding path program 1 times [2021-11-07 02:14:20,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:20,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564996511] [2021-11-07 02:14:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:20,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:20,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:20,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:20,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:14:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:21,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:14:21,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:21,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:22,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:22,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564996511] [2021-11-07 02:14:22,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564996511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:22,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:22,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-07 02:14:22,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95751370] [2021-11-07 02:14:22,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:14:22,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:14:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:14:22,440 INFO L87 Difference]: Start difference. First operand 467 states and 590 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:22,605 INFO L93 Difference]: Finished difference Result 1013 states and 1287 transitions. [2021-11-07 02:14:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:14:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 97 [2021-11-07 02:14:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:22,610 INFO L225 Difference]: With dead ends: 1013 [2021-11-07 02:14:22,610 INFO L226 Difference]: Without dead ends: 550 [2021-11-07 02:14:22,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:14:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-07 02:14:22,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 461. [2021-11-07 02:14:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 445 states have (on average 1.303370786516854) internal successors, (580), 460 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 580 transitions. [2021-11-07 02:14:22,630 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 580 transitions. Word has length 97 [2021-11-07 02:14:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:22,630 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 580 transitions. [2021-11-07 02:14:22,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 580 transitions. [2021-11-07 02:14:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 02:14:22,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:22,633 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:22,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:22,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:22,847 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:22,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-07 02:14:22,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:22,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029776951] [2021-11-07 02:14:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:22,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:22,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:22,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:14:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:23,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:14:23,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:24,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:24,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:24,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029776951] [2021-11-07 02:14:24,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029776951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:24,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:24,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:14:24,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492153875] [2021-11-07 02:14:24,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:14:24,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:24,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:14:24,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:14:24,638 INFO L87 Difference]: Start difference. First operand 461 states and 580 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:25,351 INFO L93 Difference]: Finished difference Result 1186 states and 1492 transitions. [2021-11-07 02:14:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:14:25,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 02:14:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:25,358 INFO L225 Difference]: With dead ends: 1186 [2021-11-07 02:14:25,358 INFO L226 Difference]: Without dead ends: 729 [2021-11-07 02:14:25,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:14:25,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-07 02:14:25,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 694. [2021-11-07 02:14:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 678 states have (on average 1.3097345132743363) internal successors, (888), 693 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 888 transitions. [2021-11-07 02:14:25,391 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 888 transitions. Word has length 97 [2021-11-07 02:14:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:25,392 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 888 transitions. [2021-11-07 02:14:25,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 888 transitions. [2021-11-07 02:14:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 02:14:25,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:25,395 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:25,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 02:14:25,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:25,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-07 02:14:25,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:25,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021481090] [2021-11-07 02:14:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:25,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:25,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:25,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:25,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:14:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:26,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:14:26,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:26,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:26,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:26,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021481090] [2021-11-07 02:14:26,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021481090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:26,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:26,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:14:26,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824038227] [2021-11-07 02:14:26,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:14:26,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:14:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:14:26,917 INFO L87 Difference]: Start difference. First operand 694 states and 888 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:27,091 INFO L93 Difference]: Finished difference Result 1349 states and 1731 transitions. [2021-11-07 02:14:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:14:27,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 104 [2021-11-07 02:14:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:27,098 INFO L225 Difference]: With dead ends: 1349 [2021-11-07 02:14:27,099 INFO L226 Difference]: Without dead ends: 703 [2021-11-07 02:14:27,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:14:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-07 02:14:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2021-11-07 02:14:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 687 states have (on average 1.3056768558951966) internal successors, (897), 702 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 897 transitions. [2021-11-07 02:14:27,144 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 897 transitions. Word has length 104 [2021-11-07 02:14:27,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:27,144 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 897 transitions. [2021-11-07 02:14:27,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 897 transitions. [2021-11-07 02:14:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 02:14:27,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:27,148 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:27,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:27,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:27,364 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:27,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash 421191101, now seen corresponding path program 1 times [2021-11-07 02:14:27,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:27,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349061546] [2021-11-07 02:14:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:27,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:27,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:27,369 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:27,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:14:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:28,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:14:28,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:14:28,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:14:28,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:28,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349061546] [2021-11-07 02:14:28,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349061546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:28,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1964265029] [2021-11-07 02:14:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:28,895 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:14:28,896 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:14:28,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:14:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:29,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:14:29,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:14:30,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:14:30,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1964265029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:30,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105196800] [2021-11-07 02:14:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:30,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:14:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:14:30,437 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:14:30,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 02:14:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:31,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:14:31,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:31,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:31,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105196800] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:31,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:14:31,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 02:14:31,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345795816] [2021-11-07 02:14:31,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:14:31,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:31,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:14:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:14:31,821 INFO L87 Difference]: Start difference. First operand 703 states and 897 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:32,423 INFO L93 Difference]: Finished difference Result 1380 states and 1777 transitions. [2021-11-07 02:14:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:14:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 107 [2021-11-07 02:14:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:32,430 INFO L225 Difference]: With dead ends: 1380 [2021-11-07 02:14:32,430 INFO L226 Difference]: Without dead ends: 727 [2021-11-07 02:14:32,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:14:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-07 02:14:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-07 02:14:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.2953586497890295) internal successors, (921), 726 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 921 transitions. [2021-11-07 02:14:32,464 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 921 transitions. Word has length 107 [2021-11-07 02:14:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:32,464 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 921 transitions. [2021-11-07 02:14:32,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 921 transitions. [2021-11-07 02:14:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 02:14:32,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:32,467 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:32,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:32,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:32,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:33,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:14:33,089 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash -872018179, now seen corresponding path program 2 times [2021-11-07 02:14:33,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:33,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821709916] [2021-11-07 02:14:33,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:14:33,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:33,091 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:33,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:14:34,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:14:34,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:14:34,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:14:34,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:14:34,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:14:35,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:35,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821709916] [2021-11-07 02:14:35,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821709916] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:35,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [740685789] [2021-11-07 02:14:35,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:14:35,448 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:35,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:14:35,448 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:14:35,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 02:14:36,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:14:36,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:14:36,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:14:36,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:14:37,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:14:37,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [740685789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:37,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768693380] [2021-11-07 02:14:37,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:14:37,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:14:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:14:37,386 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:14:37,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 02:14:38,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:14:38,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:14:38,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:14:38,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:14:39,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:14:39,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768693380] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:39,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:14:39,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 02:14:39,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732930228] [2021-11-07 02:14:39,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 02:14:39,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:39,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 02:14:39,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 02:14:39,937 INFO L87 Difference]: Start difference. First operand 727 states and 921 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:50,146 INFO L93 Difference]: Finished difference Result 2128 states and 2738 transitions. [2021-11-07 02:14:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 02:14:50,148 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-07 02:14:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:50,158 INFO L225 Difference]: With dead ends: 2128 [2021-11-07 02:14:50,158 INFO L226 Difference]: Without dead ends: 1455 [2021-11-07 02:14:50,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 02:14:50,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-07 02:14:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 793. [2021-11-07 02:14:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.274131274131274) internal successors, (990), 792 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 990 transitions. [2021-11-07 02:14:50,235 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 990 transitions. Word has length 115 [2021-11-07 02:14:50,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:50,237 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 990 transitions. [2021-11-07 02:14:50,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 990 transitions. [2021-11-07 02:14:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 02:14:50,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:50,241 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:50,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:50,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:50,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:50,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:14:50,849 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 02:14:50,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash -837922435, now seen corresponding path program 3 times [2021-11-07 02:14:50,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:50,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396658585] [2021-11-07 02:14:50,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:14:50,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:50,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:50,852 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:50,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a12e07c2-b9c3-42c1-9825-e20fece457ba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:14:53,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 02:14:53,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:14:53,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:14:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:53,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:53,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:53,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:14:53,257 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 02:14:53,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 02:14:53,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:14:53,484 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 02:14:53,484 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 15 treesize of output 15