./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c --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_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/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_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/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_afe27fad-6d9e-4415-92a6-d63dccc24c82/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 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:11,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:11,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:11,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:11,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:11,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:11,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:11,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:11,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:11,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:11,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:11,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:11,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:11,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:11,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:11,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:11,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:11,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:11,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:11,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:11,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:11,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:11,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:11,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:12,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:12,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:12,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:12,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:12,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:12,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:12,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:12,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:12,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:12,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:12,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:12,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:12,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:12,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:12,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:12,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:12,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:12,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:01:12,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:12,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:12,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:12,073 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:12,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:12,074 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:12,074 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:01:12,075 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:12,075 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:12,075 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:01:12,076 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:01:12,077 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:12,077 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:01:12,077 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:01:12,077 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:01:12,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:12,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:01:12,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:01:12,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:01:12,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:12,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:12,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:12,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:12,080 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:12,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:01:12,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:12,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:12,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:12,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:12,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:12,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:12,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:12,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:12,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:12,084 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:01:12,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:01:12,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:12,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:12,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:12,085 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_afe27fad-6d9e-4415-92a6-d63dccc24c82/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-11-07 02:01:12,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:12,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:12,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:12,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:12,463 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:12,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-07 02:01:12,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data/fad6559c1/2a652306e65a474c8871bf13682fc1b5/FLAG29e8a0b6b [2021-11-07 02:01:13,246 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:13,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-07 02:01:13,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data/fad6559c1/2a652306e65a474c8871bf13682fc1b5/FLAG29e8a0b6b [2021-11-07 02:01:13,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data/fad6559c1/2a652306e65a474c8871bf13682fc1b5 [2021-11-07 02:01:13,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:13,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:13,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:13,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:13,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:13,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:13" (1/1) ... [2021-11-07 02:01:13,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472b7538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:13, skipping insertion in model container [2021-11-07 02:01:13,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:13" (1/1) ... [2021-11-07 02:01:13,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:13,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:14,082 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_afe27fad-6d9e-4415-92a6-d63dccc24c82/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-07 02:01:14,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:14,132 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:01:14,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61d7c2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:14, skipping insertion in model container [2021-11-07 02:01:14,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:14,134 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:01:14,145 INFO L168 Benchmark]: Toolchain (without parser) took 693.04 ms. Allocated memory is still 104.9 MB. Free memory was 61.6 MB in the beginning and 68.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:14,146 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 80.7 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:01:14,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.44 ms. Allocated memory is still 104.9 MB. Free memory was 61.4 MB in the beginning and 68.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:01:14,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 104.9 MB. Free memory was 80.8 MB in the beginning and 80.7 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 690.44 ms. Allocated memory is still 104.9 MB. Free memory was 61.4 MB in the beginning and 68.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: 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_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/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_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/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_afe27fad-6d9e-4415-92a6-d63dccc24c82/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 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:01:16,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:01:16,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:01:16,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:01:16,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:01:16,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:01:16,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:01:16,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:01:16,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:01:16,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:01:16,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:01:16,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:01:16,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:01:16,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:01:16,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:01:16,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:01:16,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:01:16,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:01:16,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:01:16,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:01:16,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:01:16,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:01:17,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:01:17,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:01:17,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:01:17,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:01:17,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:01:17,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:01:17,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:01:17,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:01:17,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:01:17,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:01:17,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:01:17,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:01:17,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:01:17,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:01:17,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:01:17,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:01:17,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:01:17,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:01:17,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:01:17,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:01:17,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:01:17,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:01:17,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:01:17,086 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:01:17,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:01:17,087 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:01:17,087 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:01:17,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:01:17,088 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:01:17,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:01:17,091 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:01:17,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:01:17,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:01:17,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:01:17,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:01:17,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:01:17,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:01:17,092 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:01:17,093 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:01:17,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:01:17,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:01:17,093 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:01:17,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:01:17,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:01:17,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:01:17,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:01:17,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:17,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:01:17,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:01:17,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:01:17,096 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:01:17,096 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:17,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:01:17,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:01:17,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:01:17,097 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_afe27fad-6d9e-4415-92a6-d63dccc24c82/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-11-07 02:01:17,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:01:17,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:01:17,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:01:17,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:01:17,634 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:01:17,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-07 02:01:17,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data/93d223b9f/8dab4cf33cba408e94d55dd762dd4647/FLAG6aa12cf85 [2021-11-07 02:01:18,682 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:01:18,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-07 02:01:18,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data/93d223b9f/8dab4cf33cba408e94d55dd762dd4647/FLAG6aa12cf85 [2021-11-07 02:01:18,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/data/93d223b9f/8dab4cf33cba408e94d55dd762dd4647 [2021-11-07 02:01:18,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:01:18,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:01:18,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:18,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:01:18,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:01:18,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:18" (1/1) ... [2021-11-07 02:01:18,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7585effa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:18, skipping insertion in model container [2021-11-07 02:01:18,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:01:18" (1/1) ... [2021-11-07 02:01:18,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:01:18,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:19,379 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_afe27fad-6d9e-4415-92a6-d63dccc24c82/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-07 02:01:19,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:19,436 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:01:19,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:01:19,600 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_afe27fad-6d9e-4415-92a6-d63dccc24c82/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-07 02:01:19,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:19,618 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:01:19,817 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_afe27fad-6d9e-4415-92a6-d63dccc24c82/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-07 02:01:19,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:01:19,861 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:01:19,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19 WrapperNode [2021-11-07 02:01:19,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:01:19,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:19,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:01:19,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:01:19,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:19,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:19,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:01:19,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:01:19,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:01:19,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:01:20,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:20,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:20,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:20,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:20,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:20,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:20,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:20,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:01:20,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:01:20,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:01:20,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:01:20,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (1/1) ... [2021-11-07 02:01:20,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:01:20,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:01:20,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:01:20,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:01:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:01:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:01:20,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:01:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:01:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:01:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:01:20,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:01:20,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:01:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:01:20,490 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:01:30,724 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-07 02:01:30,725 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-07 02:01:30,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:01:30,733 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 02:01:30,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:30 BoogieIcfgContainer [2021-11-07 02:01:30,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:01:30,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:01:30,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:01:30,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:01:30,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:01:18" (1/3) ... [2021-11-07 02:01:30,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39137637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:30, skipping insertion in model container [2021-11-07 02:01:30,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:01:19" (2/3) ... [2021-11-07 02:01:30,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39137637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:30, skipping insertion in model container [2021-11-07 02:01:30,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:30" (3/3) ... [2021-11-07 02:01:30,743 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-2.c [2021-11-07 02:01:30,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:01:30,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:01:30,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:01:30,805 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:01:30,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:01:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:01:30,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:30,843 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:30,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 918515972, now seen corresponding path program 1 times [2021-11-07 02:01:30,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:30,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951037050] [2021-11-07 02:01:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:30,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:30,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:30,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:30,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:01:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:31,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:01:31,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:31,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:31,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:31,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951037050] [2021-11-07 02:01:31,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951037050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:31,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:31,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:01:31,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269976115] [2021-11-07 02:01:31,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:31,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:31,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:31,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:31,866 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:32,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:32,169 INFO L93 Difference]: Finished difference Result 574 states and 984 transitions. [2021-11-07 02:01:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:01:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:01:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:32,189 INFO L225 Difference]: With dead ends: 574 [2021-11-07 02:01:32,189 INFO L226 Difference]: Without dead ends: 392 [2021-11-07 02:01:32,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-07 02:01:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-07 02:01:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5319693094629157) internal successors, (599), 391 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 599 transitions. [2021-11-07 02:01:32,273 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 599 transitions. Word has length 44 [2021-11-07 02:01:32,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:32,274 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 599 transitions. [2021-11-07 02:01:32,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 599 transitions. [2021-11-07 02:01:32,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 02:01:32,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:32,285 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:32,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:32,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:32,504 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:32,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash 85239560, now seen corresponding path program 1 times [2021-11-07 02:01:32,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:32,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351523837] [2021-11-07 02:01:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:32,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:32,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:32,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:32,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:01:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:32,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:01:32,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:33,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:33,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:33,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351523837] [2021-11-07 02:01:33,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351523837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:33,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:33,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:01:33,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694008795] [2021-11-07 02:01:33,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:33,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:33,787 INFO L87 Difference]: Start difference. First operand 392 states and 599 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:34,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:34,424 INFO L93 Difference]: Finished difference Result 897 states and 1389 transitions. [2021-11-07 02:01:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:01:34,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-07 02:01:34,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:34,433 INFO L225 Difference]: With dead ends: 897 [2021-11-07 02:01:34,433 INFO L226 Difference]: Without dead ends: 642 [2021-11-07 02:01:34,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:34,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-07 02:01:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-11-07 02:01:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.5241809672386895) internal successors, (977), 641 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 977 transitions. [2021-11-07 02:01:34,504 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 977 transitions. Word has length 104 [2021-11-07 02:01:34,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:34,505 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 977 transitions. [2021-11-07 02:01:34,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 977 transitions. [2021-11-07 02:01:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 02:01:34,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:34,527 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:34,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:34,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:34,728 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash -19862405, now seen corresponding path program 1 times [2021-11-07 02:01:34,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:34,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156143348] [2021-11-07 02:01:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:34,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:34,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:34,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:01:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:35,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:01:35,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 02:01:35,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 02:01:36,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:36,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156143348] [2021-11-07 02:01:36,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156143348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:36,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:36,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:01:36,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130745901] [2021-11-07 02:01:36,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:36,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:36,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:36,466 INFO L87 Difference]: Start difference. First operand 642 states and 977 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:37,264 INFO L93 Difference]: Finished difference Result 1400 states and 2148 transitions. [2021-11-07 02:01:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:01:37,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2021-11-07 02:01:37,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:37,281 INFO L225 Difference]: With dead ends: 1400 [2021-11-07 02:01:37,281 INFO L226 Difference]: Without dead ends: 895 [2021-11-07 02:01:37,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-07 02:01:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-11-07 02:01:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.5190156599552573) internal successors, (1358), 894 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1358 transitions. [2021-11-07 02:01:37,335 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1358 transitions. Word has length 167 [2021-11-07 02:01:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:37,336 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1358 transitions. [2021-11-07 02:01:37,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1358 transitions. [2021-11-07 02:01:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-07 02:01:37,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:37,342 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:37,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:37,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:37,560 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1844926231, now seen corresponding path program 1 times [2021-11-07 02:01:37,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:37,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540730677] [2021-11-07 02:01:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:37,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:37,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:37,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:37,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:01:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:38,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:01:38,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 02:01:39,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 02:01:39,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:39,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540730677] [2021-11-07 02:01:39,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540730677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:39,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:39,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:01:39,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360922440] [2021-11-07 02:01:39,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:39,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:39,847 INFO L87 Difference]: Start difference. First operand 895 states and 1358 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:40,370 INFO L93 Difference]: Finished difference Result 1904 states and 2905 transitions. [2021-11-07 02:01:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:01:40,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 230 [2021-11-07 02:01:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:40,381 INFO L225 Difference]: With dead ends: 1904 [2021-11-07 02:01:40,381 INFO L226 Difference]: Without dead ends: 1146 [2021-11-07 02:01:40,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-11-07 02:01:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2021-11-07 02:01:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.514410480349345) internal successors, (1734), 1145 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1734 transitions. [2021-11-07 02:01:40,441 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1734 transitions. Word has length 230 [2021-11-07 02:01:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:40,442 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1734 transitions. [2021-11-07 02:01:40,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1734 transitions. [2021-11-07 02:01:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-07 02:01:40,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:40,450 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:40,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:40,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:40,676 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:40,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:40,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1007722868, now seen corresponding path program 1 times [2021-11-07 02:01:40,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:40,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410767628] [2021-11-07 02:01:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:40,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:40,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:40,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:40,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:01:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:41,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:01:41,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:42,369 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-07 02:01:42,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-07 02:01:43,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:43,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410767628] [2021-11-07 02:01:43,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410767628] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:43,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:43,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:01:43,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540269436] [2021-11-07 02:01:43,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:43,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:43,303 INFO L87 Difference]: Start difference. First operand 1146 states and 1734 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:44,206 INFO L93 Difference]: Finished difference Result 2409 states and 3659 transitions. [2021-11-07 02:01:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:01:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 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 294 [2021-11-07 02:01:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:44,219 INFO L225 Difference]: With dead ends: 2409 [2021-11-07 02:01:44,219 INFO L226 Difference]: Without dead ends: 1400 [2021-11-07 02:01:44,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-07 02:01:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1400. [2021-11-07 02:01:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 1.5096497498213008) internal successors, (2112), 1399 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2112 transitions. [2021-11-07 02:01:44,297 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2112 transitions. Word has length 294 [2021-11-07 02:01:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:44,298 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 2112 transitions. [2021-11-07 02:01:44,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2112 transitions. [2021-11-07 02:01:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-07 02:01:44,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:44,308 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:44,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:44,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:44,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1828138848, now seen corresponding path program 1 times [2021-11-07 02:01:44,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:44,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475172619] [2021-11-07 02:01:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:44,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:44,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:44,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:44,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:01:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:45,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:01:45,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-07 02:01:46,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-07 02:01:47,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:47,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475172619] [2021-11-07 02:01:47,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475172619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:47,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:47,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:01:47,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334108428] [2021-11-07 02:01:47,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:47,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:47,707 INFO L87 Difference]: Start difference. First operand 1400 states and 2112 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:48,210 INFO L93 Difference]: Finished difference Result 2914 states and 4408 transitions. [2021-11-07 02:01:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:01:48,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 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 358 [2021-11-07 02:01:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:48,224 INFO L225 Difference]: With dead ends: 2914 [2021-11-07 02:01:48,224 INFO L226 Difference]: Without dead ends: 1651 [2021-11-07 02:01:48,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-07 02:01:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-07 02:01:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.5054545454545454) internal successors, (2484), 1650 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2484 transitions. [2021-11-07 02:01:48,304 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2484 transitions. Word has length 358 [2021-11-07 02:01:48,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:48,305 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2484 transitions. [2021-11-07 02:01:48,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2484 transitions. [2021-11-07 02:01:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-07 02:01:48,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:48,321 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:48,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:48,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:48,542 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash -152438136, now seen corresponding path program 1 times [2021-11-07 02:01:48,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:48,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776751692] [2021-11-07 02:01:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:48,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:48,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:48,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:48,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:01:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:51,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:01:51,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:51,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:01:51,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:01:51,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:51,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 02:01:51,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:51,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 02:01:51,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-07 02:01:51,764 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-07 02:01:51,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 717 treesize of output 669 [2021-11-07 02:01:51,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:51,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 02:01:51,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-07 02:01:51,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:51,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2021-11-07 02:01:52,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:01:52,175 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 02:01:52,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:01:52,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:52,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:01:52,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-07 02:01:52,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-07 02:01:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-07 02:01:53,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:55,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:55,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 02:01:55,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:55,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-07 02:01:55,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:55,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-07 02:01:55,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:55,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-07 02:01:55,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:55,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-07 02:01:55,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:55,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-07 02:01:55,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:55,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-07 02:01:55,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:01:55,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-07 02:01:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-07 02:01:55,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:55,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776751692] [2021-11-07 02:01:55,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776751692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:55,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:55,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:01:55,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911768320] [2021-11-07 02:01:55,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:01:55,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:01:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:01:55,863 INFO L87 Difference]: Start difference. First operand 1651 states and 2484 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:22,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:22,012 INFO L93 Difference]: Finished difference Result 3299 states and 4964 transitions. [2021-11-07 02:02:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:02:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2021-11-07 02:02:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:22,028 INFO L225 Difference]: With dead ends: 3299 [2021-11-07 02:02:22,028 INFO L226 Difference]: Without dead ends: 1651 [2021-11-07 02:02:22,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 775 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:02:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-07 02:02:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-07 02:02:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.5048484848484849) internal successors, (2483), 1650 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2483 transitions. [2021-11-07 02:02:22,125 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2483 transitions. Word has length 392 [2021-11-07 02:02:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:22,125 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2483 transitions. [2021-11-07 02:02:22,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2483 transitions. [2021-11-07 02:02:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-07 02:02:22,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:22,139 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:22,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:22,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:22,364 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:02:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash -924972090, now seen corresponding path program 1 times [2021-11-07 02:02:22,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:22,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391325288] [2021-11-07 02:02:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:22,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:22,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:22,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:22,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:02:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:25,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:02:25,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:25,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:25,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:25,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:25,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:25,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:25,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:02:25,533 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 02:02:25,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-07 02:02:25,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:02:25,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:02:25,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:02:26,081 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:02:26,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-11-07 02:02:27,709 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:02:27,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-07 02:02:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2021-11-07 02:02:28,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2021-11-07 02:02:30,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:30,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391325288] [2021-11-07 02:02:30,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391325288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:30,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:30,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:02:30,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973682949] [2021-11-07 02:02:30,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:02:30,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:30,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:02:30,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:02:30,155 INFO L87 Difference]: Start difference. First operand 1651 states and 2483 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:17,298 INFO L93 Difference]: Finished difference Result 6246 states and 9434 transitions. [2021-11-07 02:03:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:03:17,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2021-11-07 02:03:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:17,336 INFO L225 Difference]: With dead ends: 6246 [2021-11-07 02:03:17,336 INFO L226 Difference]: Without dead ends: 4605 [2021-11-07 02:03:17,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2021-11-07 02:03:17,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 1975. [2021-11-07 02:03:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.5405268490374873) internal successors, (3041), 1974 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3041 transitions. [2021-11-07 02:03:17,517 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3041 transitions. Word has length 392 [2021-11-07 02:03:17,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:17,517 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 3041 transitions. [2021-11-07 02:03:17,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:17,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3041 transitions. [2021-11-07 02:03:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-07 02:03:17,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:17,528 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:03:17,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:17,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:17,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:03:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1676639032, now seen corresponding path program 1 times [2021-11-07 02:03:17,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:17,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950818729] [2021-11-07 02:03:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:17,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:17,748 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:17,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:03:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:20,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:03:20,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:20,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:03:20,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:03:20,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:03:20,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:03:20,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:03:20,957 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-07 02:03:20,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-07 02:03:21,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:03:21,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:03:21,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:03:21,387 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:03:21,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-07 02:03:24,229 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:03:24,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-07 02:03:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-07 02:03:24,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-07 02:03:25,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:25,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950818729] [2021-11-07 02:03:25,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950818729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:25,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:03:25,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:03:25,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491367188] [2021-11-07 02:03:25,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:03:25,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:25,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:03:25,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:03:25,624 INFO L87 Difference]: Start difference. First operand 1975 states and 3041 transitions. Second operand has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:16,117 INFO L93 Difference]: Finished difference Result 8331 states and 12766 transitions. [2021-11-07 02:04:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:04:16,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 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 392 [2021-11-07 02:04:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:16,152 INFO L225 Difference]: With dead ends: 8331 [2021-11-07 02:04:16,152 INFO L226 Difference]: Without dead ends: 6366 [2021-11-07 02:04:16,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:04:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2021-11-07 02:04:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 2807. [2021-11-07 02:04:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 1.6190306486101211) internal successors, (4543), 2806 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4543 transitions. [2021-11-07 02:04:16,367 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4543 transitions. Word has length 392 [2021-11-07 02:04:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:16,368 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 4543 transitions. [2021-11-07 02:04:16,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4543 transitions. [2021-11-07 02:04:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-07 02:04:16,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:16,379 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:16,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 02:04:16,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:16,604 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:04:16,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash -729601146, now seen corresponding path program 1 times [2021-11-07 02:04:16,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:16,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122041884] [2021-11-07 02:04:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:16,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:16,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:16,609 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:16,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe27fad-6d9e-4415-92a6-d63dccc24c82/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:04:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:26,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-07 02:04:26,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:23,524 WARN L207 SmtUtils]: Spent 1.94 m on a formula simplification. DAG size of input: 59 DAG size of output: 15 [2021-11-07 02:06:23,525 INFO L354 Elim1Store]: treesize reduction 177, result has 15.3 percent of original size [2021-11-07 02:06:23,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 5166 treesize of output 5178 [2021-11-07 02:06:23,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5165 treesize of output 5129 [2021-11-07 02:06:23,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:06:23,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79473 [2021-11-07 02:06:23,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:06:23,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216788 [2021-11-07 02:06:23,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:23,720 INFO L190 IndexEqualityManager]: detected not equals via solver