./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.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_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/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_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/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_1d2ef956-c299-4f38-b4c0-950a136f11c6/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 6698dfe763688c38a478c53cfe3bc6bac092e445bf13ef44be53eb6068218c93 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:45,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:45,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:45,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:45,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:45,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:45,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:45,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:45,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:45,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:45,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:45,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:45,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:45,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:45,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:45,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:45,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:45,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:45,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:45,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:45,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:45,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:45,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:45,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:45,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:45,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:45,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:45,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:45,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:45,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:45,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:45,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:45,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:45,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:45,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:45,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:45,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:45,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:45,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:45,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:45,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:45,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:36:45,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:45,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:45,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:45,972 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:45,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:45,973 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:45,973 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:36:45,973 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:45,974 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:45,974 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:36:45,975 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:36:45,975 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:45,976 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:36:45,976 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:36:45,977 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:36:45,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:45,980 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:45,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:45,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:45,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:45,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:45,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:45,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:45,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:45,984 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:45,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:45,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:45,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:45,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:45,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:45,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:45,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:45,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:45,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:45,989 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:36:45,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:36:45,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:45,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:45,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:45,991 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6698dfe763688c38a478c53cfe3bc6bac092e445bf13ef44be53eb6068218c93 [2021-11-07 01:36:46,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:46,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:46,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:46,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:46,386 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:46,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i [2021-11-07 01:36:46,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data/5d6a2c71d/dce451b8c5ba4c12897e354dbb0f64a0/FLAG7cdedc9ae [2021-11-07 01:36:47,397 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:47,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i [2021-11-07 01:36:47,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data/5d6a2c71d/dce451b8c5ba4c12897e354dbb0f64a0/FLAG7cdedc9ae [2021-11-07 01:36:47,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data/5d6a2c71d/dce451b8c5ba4c12897e354dbb0f64a0 [2021-11-07 01:36:47,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:47,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:47,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:47,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:47,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:47,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:47" (1/1) ... [2021-11-07 01:36:47,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c5a165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:47, skipping insertion in model container [2021-11-07 01:36:47,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:47" (1/1) ... [2021-11-07 01:36:47,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:48,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:48,635 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[33021,33034] [2021-11-07 01:36:48,871 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[84583,84596] [2021-11-07 01:36:48,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:48,885 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 01:36:48,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45357967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:48, skipping insertion in model container [2021-11-07 01:36:48,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:48,893 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:36:48,896 INFO L168 Benchmark]: Toolchain (without parser) took 934.16 ms. Allocated memory is still 102.8 MB. Free memory was 66.4 MB in the beginning and 58.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:48,897 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 53.9 MB in the beginning and 53.8 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:36:48,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 929.59 ms. Allocated memory is still 102.8 MB. Free memory was 66.1 MB in the beginning and 58.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:48,902 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 81.8 MB. Free memory was 53.9 MB in the beginning and 53.8 MB in the end (delta: 30.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 929.59 ms. Allocated memory is still 102.8 MB. Free memory was 66.1 MB in the beginning and 58.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/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_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/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_1d2ef956-c299-4f38-b4c0-950a136f11c6/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 6698dfe763688c38a478c53cfe3bc6bac092e445bf13ef44be53eb6068218c93 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:51,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:51,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:51,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:51,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:51,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:51,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:51,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:51,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:51,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:51,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:51,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:51,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:51,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:51,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:51,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:51,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:51,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:51,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:51,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:51,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:51,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:51,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:51,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:51,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:51,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:51,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:51,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:51,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:51,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:51,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:51,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:51,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:51,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:51,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:51,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:51,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:51,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:51,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:51,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:51,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:51,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:36:51,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:51,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:51,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:51,524 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:51,524 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:51,524 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:51,525 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:51,525 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:51,525 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:51,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:51,528 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:51,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:51,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:51,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:51,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:51,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:51,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:51,529 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:36:51,530 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:36:51,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:51,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:51,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:51,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:51,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:51,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:36:51,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:51,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:51,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:51,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:51,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:51,533 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:36:51,533 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:51,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:51,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:51,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:51,534 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6698dfe763688c38a478c53cfe3bc6bac092e445bf13ef44be53eb6068218c93 [2021-11-07 01:36:51,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:51,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:51,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:51,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:51,977 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:51,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i [2021-11-07 01:36:52,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data/e1404c4da/ddb78191c8414cde911046da24e881c0/FLAG4a40f4607 [2021-11-07 01:36:53,015 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:53,016 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i [2021-11-07 01:36:53,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data/e1404c4da/ddb78191c8414cde911046da24e881c0/FLAG4a40f4607 [2021-11-07 01:36:53,526 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/data/e1404c4da/ddb78191c8414cde911046da24e881c0 [2021-11-07 01:36:53,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:53,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:53,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:53,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:53,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:53,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:53,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b080286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:53, skipping insertion in model container [2021-11-07 01:36:53,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:53" (1/1) ... [2021-11-07 01:36:53,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:53,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:54,292 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[33021,33034] [2021-11-07 01:36:54,642 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[84583,84596] [2021-11-07 01:36:54,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:54,661 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:36:54,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:54,704 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[33021,33034] [2021-11-07 01:36:54,873 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[84583,84596] [2021-11-07 01:36:54,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:54,881 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:36:54,924 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[33021,33034] [2021-11-07 01:36:55,025 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_1d2ef956-c299-4f38-b4c0-950a136f11c6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[84583,84596] [2021-11-07 01:36:55,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:55,097 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:36:55,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55 WrapperNode [2021-11-07 01:36:55,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:55,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:55,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:36:55,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:36:55,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:55,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:36:55,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:36:55,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:36:55,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:36:55,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:36:55,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:36:55,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:36:55,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:36:55,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:36:55,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:36:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:36:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:36:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:36:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:36:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:36:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:36:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:36:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:36:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:36:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:36:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:36:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:37:06,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:37:06,309 INFO L299 CfgBuilder]: Removed 1066 assume(true) statements. [2021-11-07 01:37:06,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:06 BoogieIcfgContainer [2021-11-07 01:37:06,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:37:06,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:37:06,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:37:06,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:37:06,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:36:53" (1/3) ... [2021-11-07 01:37:06,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7306583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:06, skipping insertion in model container [2021-11-07 01:37:06,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55" (2/3) ... [2021-11-07 01:37:06,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7306583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:06, skipping insertion in model container [2021-11-07 01:37:06,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:06" (3/3) ... [2021-11-07 01:37:06,320 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test9-1.i [2021-11-07 01:37:06,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:37:06,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 501 error locations. [2021-11-07 01:37:06,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:37:06,409 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 01:37:06,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 501 error locations. [2021-11-07 01:37:06,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 2157 states, 1655 states have (on average 1.9716012084592145) internal successors, (3263), 2156 states have internal predecessors, (3263), 0 states have call successors, (0), 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 01:37:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:37:06,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:06,477 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:06,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:06,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash 239437319, now seen corresponding path program 1 times [2021-11-07 01:37:06,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:06,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633947870] [2021-11-07 01:37:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:06,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:06,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:06,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:37:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:37:06,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:06,759 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 01:37:06,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:06,801 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 01:37:06,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:06,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633947870] [2021-11-07 01:37:06,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633947870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:06,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:06,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:37:06,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999572768] [2021-11-07 01:37:06,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:37:06,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:06,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:37:06,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:37:06,830 INFO L87 Difference]: Start difference. First operand has 2157 states, 1655 states have (on average 1.9716012084592145) internal successors, (3263), 2156 states have internal predecessors, (3263), 0 states have call successors, (0), 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 01:37:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:07,061 INFO L93 Difference]: Finished difference Result 4312 states and 6524 transitions. [2021-11-07 01:37:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:37:07,062 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 01:37:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:07,100 INFO L225 Difference]: With dead ends: 4312 [2021-11-07 01:37:07,100 INFO L226 Difference]: Without dead ends: 2153 [2021-11-07 01:37:07,112 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 01:37:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-07 01:37:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2021-11-07 01:37:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 1652 states have (on average 1.6343825665859564) internal successors, (2700), 2152 states have internal predecessors, (2700), 0 states have call successors, (0), 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 01:37:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2700 transitions. [2021-11-07 01:37:07,252 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2700 transitions. Word has length 9 [2021-11-07 01:37:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:07,253 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2700 transitions. [2021-11-07 01:37:07,253 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 01:37:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2700 transitions. [2021-11-07 01:37:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:37:07,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:07,257 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 01:37:07,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:07,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:07,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:07,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash 627540097, now seen corresponding path program 1 times [2021-11-07 01:37:07,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:07,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234704459] [2021-11-07 01:37:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:07,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:07,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:07,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:07,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:37:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:07,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:07,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:07,890 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 01:37:07,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:08,049 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 01:37:08,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:08,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234704459] [2021-11-07 01:37:08,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234704459] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:08,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:08,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:37:08,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988315048] [2021-11-07 01:37:08,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:08,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:08,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:08,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:08,053 INFO L87 Difference]: Start difference. First operand 2153 states and 2700 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 01:37:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:08,278 INFO L93 Difference]: Finished difference Result 4224 states and 5293 transitions. [2021-11-07 01:37:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:08,279 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 01:37:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:08,291 INFO L225 Difference]: With dead ends: 4224 [2021-11-07 01:37:08,291 INFO L226 Difference]: Without dead ends: 2162 [2021-11-07 01:37:08,294 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 01:37:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2021-11-07 01:37:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2156. [2021-11-07 01:37:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1655 states have (on average 1.6283987915407856) internal successors, (2695), 2155 states have internal predecessors, (2695), 0 states have call successors, (0), 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 01:37:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2695 transitions. [2021-11-07 01:37:08,348 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2695 transitions. Word has length 44 [2021-11-07 01:37:08,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:08,348 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2695 transitions. [2021-11-07 01:37:08,348 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 01:37:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2695 transitions. [2021-11-07 01:37:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:37:08,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:08,351 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 01:37:08,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:08,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:08,565 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash -317348363, now seen corresponding path program 1 times [2021-11-07 01:37:08,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:08,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176227107] [2021-11-07 01:37:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:08,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:08,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:08,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:08,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:37:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:08,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:37:08,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:09,018 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 01:37:09,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:09,743 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 01:37:09,743 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:09,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176227107] [2021-11-07 01:37:09,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176227107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:09,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:09,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:37:09,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258958879] [2021-11-07 01:37:09,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:37:09,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:37:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:37:09,747 INFO L87 Difference]: Start difference. First operand 2156 states and 2695 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:09,940 INFO L93 Difference]: Finished difference Result 4220 states and 5270 transitions. [2021-11-07 01:37:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:09,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:37:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:09,975 INFO L225 Difference]: With dead ends: 4220 [2021-11-07 01:37:09,976 INFO L226 Difference]: Without dead ends: 2155 [2021-11-07 01:37:09,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:37:09,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2021-11-07 01:37:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2150. [2021-11-07 01:37:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1649 states have (on average 1.6282595512431777) internal successors, (2685), 2149 states have internal predecessors, (2685), 0 states have call successors, (0), 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 01:37:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2685 transitions. [2021-11-07 01:37:10,031 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2685 transitions. Word has length 44 [2021-11-07 01:37:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:10,032 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 2685 transitions. [2021-11-07 01:37:10,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2685 transitions. [2021-11-07 01:37:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:37:10,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:10,040 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 01:37:10,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:10,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:10,257 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:10,258 INFO L85 PathProgramCache]: Analyzing trace with hash -575513801, now seen corresponding path program 1 times [2021-11-07 01:37:10,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:10,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041705205] [2021-11-07 01:37:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:10,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:10,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:10,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:10,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:37:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:10,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:10,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:10,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:10,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:10,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:10,714 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:37:10,715 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 01:37:10,792 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:37:10,792 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 01:37:10,927 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 01:37:10,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:11,128 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 01:37:11,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:11,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041705205] [2021-11-07 01:37:11,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041705205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:11,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:11,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:37:11,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790631007] [2021-11-07 01:37:11,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:11,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:11,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:11,135 INFO L87 Difference]: Start difference. First operand 2150 states and 2685 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 01:37:18,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:18,358 INFO L93 Difference]: Finished difference Result 8367 states and 10436 transitions. [2021-11-07 01:37:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:18,360 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 01:37:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:18,393 INFO L225 Difference]: With dead ends: 8367 [2021-11-07 01:37:18,394 INFO L226 Difference]: Without dead ends: 6307 [2021-11-07 01:37:18,398 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 01:37:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2021-11-07 01:37:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 2152. [2021-11-07 01:37:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1651 states have (on average 1.6274984857662023) internal successors, (2687), 2151 states have internal predecessors, (2687), 0 states have call successors, (0), 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 01:37:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2687 transitions. [2021-11-07 01:37:18,478 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2687 transitions. Word has length 44 [2021-11-07 01:37:18,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:18,478 INFO L470 AbstractCegarLoop]: Abstraction has 2152 states and 2687 transitions. [2021-11-07 01:37:18,479 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 01:37:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2687 transitions. [2021-11-07 01:37:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:37:18,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:18,483 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] [2021-11-07 01:37:18,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:18,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:18,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:18,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:18,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1988614245, now seen corresponding path program 1 times [2021-11-07 01:37:18,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:18,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110981138] [2021-11-07 01:37:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:18,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:18,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:18,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:18,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:37:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:19,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:19,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:19,366 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 01:37:19,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:19,681 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 01:37:19,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:19,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110981138] [2021-11-07 01:37:19,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110981138] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:19,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:19,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:37:19,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695718806] [2021-11-07 01:37:19,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:19,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:19,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:19,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:19,684 INFO L87 Difference]: Start difference. First operand 2152 states and 2687 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:37:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:19,889 INFO L93 Difference]: Finished difference Result 4309 states and 5382 transitions. [2021-11-07 01:37:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:19,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 96 [2021-11-07 01:37:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:19,902 INFO L225 Difference]: With dead ends: 4309 [2021-11-07 01:37:19,902 INFO L226 Difference]: Without dead ends: 2161 [2021-11-07 01:37:19,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 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 01:37:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-11-07 01:37:19,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2155. [2021-11-07 01:37:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1654 states have (on average 1.6215235792019347) internal successors, (2682), 2154 states have internal predecessors, (2682), 0 states have call successors, (0), 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 01:37:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2682 transitions. [2021-11-07 01:37:19,967 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2682 transitions. Word has length 96 [2021-11-07 01:37:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:19,969 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2682 transitions. [2021-11-07 01:37:19,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:37:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2682 transitions. [2021-11-07 01:37:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 01:37:19,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:19,972 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] [2021-11-07 01:37:19,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:20,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:20,189 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:20,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash -312724623, now seen corresponding path program 1 times [2021-11-07 01:37:20,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:20,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569394042] [2021-11-07 01:37:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:20,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:20,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:20,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:20,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:37:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:20,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:20,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:21,055 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 01:37:21,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:21,576 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 01:37:21,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:21,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569394042] [2021-11-07 01:37:21,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569394042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:21,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:21,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:37:21,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731085755] [2021-11-07 01:37:21,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:21,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:21,579 INFO L87 Difference]: Start difference. First operand 2155 states and 2682 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:22,190 INFO L93 Difference]: Finished difference Result 6390 states and 7950 transitions. [2021-11-07 01:37:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 01:37:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:22,214 INFO L225 Difference]: With dead ends: 6390 [2021-11-07 01:37:22,214 INFO L226 Difference]: Without dead ends: 4239 [2021-11-07 01:37:22,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 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 01:37:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-07 01:37:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3237. [2021-11-07 01:37:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2736 states have (on average 1.7430555555555556) internal successors, (4769), 3236 states have internal predecessors, (4769), 0 states have call successors, (0), 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 01:37:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4769 transitions. [2021-11-07 01:37:22,304 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4769 transitions. Word has length 96 [2021-11-07 01:37:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:22,304 INFO L470 AbstractCegarLoop]: Abstraction has 3237 states and 4769 transitions. [2021-11-07 01:37:22,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4769 transitions. [2021-11-07 01:37:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:37:22,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:22,312 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] [2021-11-07 01:37:22,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:22,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:22,525 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1091132224, now seen corresponding path program 1 times [2021-11-07 01:37:22,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:22,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70069970] [2021-11-07 01:37:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:22,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:22,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:22,529 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:22,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:37:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:23,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:23,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:23,317 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 01:37:23,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:23,595 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 01:37:23,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:23,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70069970] [2021-11-07 01:37:23,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70069970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:23,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:23,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:23,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478276821] [2021-11-07 01:37:23,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:23,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:23,598 INFO L87 Difference]: Start difference. First operand 3237 states and 4769 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 01:37:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:23,702 INFO L93 Difference]: Finished difference Result 6432 states and 9495 transitions. [2021-11-07 01:37:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:23,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 103 [2021-11-07 01:37:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:23,721 INFO L225 Difference]: With dead ends: 6432 [2021-11-07 01:37:23,721 INFO L226 Difference]: Without dead ends: 3240 [2021-11-07 01:37:23,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 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 01:37:23,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-11-07 01:37:23,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 3240. [2021-11-07 01:37:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 2739 states have (on average 1.742241694048923) internal successors, (4772), 3239 states have internal predecessors, (4772), 0 states have call successors, (0), 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 01:37:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4772 transitions. [2021-11-07 01:37:23,803 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4772 transitions. Word has length 103 [2021-11-07 01:37:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:23,803 INFO L470 AbstractCegarLoop]: Abstraction has 3240 states and 4772 transitions. [2021-11-07 01:37:23,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 01:37:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4772 transitions. [2021-11-07 01:37:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:37:23,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:23,805 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] [2021-11-07 01:37:23,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:24,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:24,027 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:24,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash -785976308, now seen corresponding path program 1 times [2021-11-07 01:37:24,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:24,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655130860] [2021-11-07 01:37:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:24,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:24,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:24,034 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:24,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:37:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:24,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:24,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:24,982 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 01:37:24,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:25,307 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 01:37:25,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:25,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655130860] [2021-11-07 01:37:25,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655130860] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:25,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1246681688] [2021-11-07 01:37:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:25,308 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:25,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:37:25,314 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:37:25,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:37:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:25,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:25,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:37:26,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:37:26,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1246681688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:26,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:37:26,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:37:26,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522270253] [2021-11-07 01:37:26,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:26,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:26,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:26,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:37:26,923 INFO L87 Difference]: Start difference. First operand 3240 states and 4772 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 01:37:31,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:31,250 INFO L93 Difference]: Finished difference Result 5394 states and 7453 transitions. [2021-11-07 01:37:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:31,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 106 [2021-11-07 01:37:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:31,264 INFO L225 Difference]: With dead ends: 5394 [2021-11-07 01:37:31,264 INFO L226 Difference]: Without dead ends: 2199 [2021-11-07 01:37:31,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:37:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-07 01:37:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2199. [2021-11-07 01:37:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1698 states have (on average 1.6065959952885749) internal successors, (2728), 2198 states have internal predecessors, (2728), 0 states have call successors, (0), 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 01:37:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 2728 transitions. [2021-11-07 01:37:31,321 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 2728 transitions. Word has length 106 [2021-11-07 01:37:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:31,322 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 2728 transitions. [2021-11-07 01:37:31,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 01:37:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 2728 transitions. [2021-11-07 01:37:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:37:31,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:31,324 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, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:31,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:31,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:31,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:31,729 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:31,729 INFO L85 PathProgramCache]: Analyzing trace with hash 530701390, now seen corresponding path program 1 times [2021-11-07 01:37:31,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:31,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967641694] [2021-11-07 01:37:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:31,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:31,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:31,732 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:31,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:37:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:32,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:32,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:32,700 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 01:37:32,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:33,097 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 01:37:33,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:33,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967641694] [2021-11-07 01:37:33,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967641694] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:33,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2004475111] [2021-11-07 01:37:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:33,099 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:33,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:37:33,100 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:37:33,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:37:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:33,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:33,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:34,246 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 01:37:34,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:34,507 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 01:37:34,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2004475111] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:34,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278316677] [2021-11-07 01:37:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:34,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:37:34,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:37:34,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:37:34,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:37:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:35,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:35,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:35,482 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 01:37:35,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:35,768 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 01:37:35,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278316677] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:35,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:37:35,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:37:35,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738692120] [2021-11-07 01:37:35,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:37:35,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:37:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:37:35,771 INFO L87 Difference]: Start difference. First operand 2199 states and 2728 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 01:37:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:36,132 INFO L93 Difference]: Finished difference Result 4356 states and 5417 transitions. [2021-11-07 01:37:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:37:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 113 [2021-11-07 01:37:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:36,142 INFO L225 Difference]: With dead ends: 4356 [2021-11-07 01:37:36,142 INFO L226 Difference]: Without dead ends: 2207 [2021-11-07 01:37:36,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 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 01:37:36,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-07 01:37:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-07 01:37:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1706 states have (on average 1.6037514654161782) internal successors, (2736), 2206 states have internal predecessors, (2736), 0 states have call successors, (0), 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 01:37:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2736 transitions. [2021-11-07 01:37:36,198 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2736 transitions. Word has length 113 [2021-11-07 01:37:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:36,198 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2736 transitions. [2021-11-07 01:37:36,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 01:37:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2736 transitions. [2021-11-07 01:37:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:37:36,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:36,201 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, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:36,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:36,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:36,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:36,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:36,826 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:36,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:36,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1097119218, now seen corresponding path program 2 times [2021-11-07 01:37:36,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:36,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230736066] [2021-11-07 01:37:36,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:36,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:36,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:36,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:36,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:37:37,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:37,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:37,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:37:37,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:38,125 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 01:37:38,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:38,716 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 01:37:38,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:38,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230736066] [2021-11-07 01:37:38,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230736066] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:38,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [7107349] [2021-11-07 01:37:38,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:38,716 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:38,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:37:38,724 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:37:38,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:37:40,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:40,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:40,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:37:40,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:40,442 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 01:37:40,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:40,725 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 01:37:40,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [7107349] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:40,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858051145] [2021-11-07 01:37:40,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:40,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:37:40,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:37:40,727 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:37:40,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:37:41,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:41,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:41,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:37:41,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:42,181 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 01:37:42,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:42,960 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 01:37:42,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858051145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:42,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:37:42,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:37:42,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355531899] [2021-11-07 01:37:42,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:37:42,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:37:42,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:37:42,963 INFO L87 Difference]: Start difference. First operand 2207 states and 2736 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 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 01:37:46,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:46,874 INFO L93 Difference]: Finished difference Result 6523 states and 8120 transitions. [2021-11-07 01:37:46,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:37:46,876 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 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 121 [2021-11-07 01:37:46,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:46,890 INFO L225 Difference]: With dead ends: 6523 [2021-11-07 01:37:46,890 INFO L226 Difference]: Without dead ends: 4370 [2021-11-07 01:37:46,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:37:46,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-11-07 01:37:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2229. [2021-11-07 01:37:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1728 states have (on average 1.5966435185185186) internal successors, (2759), 2228 states have internal predecessors, (2759), 0 states have call successors, (0), 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 01:37:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2759 transitions. [2021-11-07 01:37:47,001 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2759 transitions. Word has length 121 [2021-11-07 01:37:47,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:47,001 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 2759 transitions. [2021-11-07 01:37:47,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 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 01:37:47,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2759 transitions. [2021-11-07 01:37:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 01:37:47,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:47,004 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, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:47,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:47,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:47,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:47,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:47,633 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 01:37:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1558493810, now seen corresponding path program 3 times [2021-11-07 01:37:47,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:47,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037552135] [2021-11-07 01:37:47,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:37:47,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:47,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:47,641 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:47,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:37:54,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:37:54,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:54,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:37:54,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:37:54,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:37:56,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:56,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037552135] [2021-11-07 01:37:56,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037552135] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:56,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2017647478] [2021-11-07 01:37:56,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:37:56,499 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:56,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:37:56,501 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:37:56,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:38:46,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:38:46,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:38:46,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:38:46,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:38:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:38:47,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:38:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 01:38:47,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2017647478] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:38:47,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162857472] [2021-11-07 01:38:47,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:38:47,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:38:47,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:38:47,596 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:38:47,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d2ef956-c299-4f38-b4c0-950a136f11c6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process