./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.06.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_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/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_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/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_897fc284-2b48-4c81-934d-f847ce9592ac/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 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:15:28,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:15:28,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:15:28,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:15:28,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:15:28,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:15:28,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:15:28,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:15:28,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:15:28,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:15:28,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:15:28,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:15:28,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:15:28,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:15:28,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:15:28,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:15:28,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:15:28,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:15:28,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:15:28,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:15:29,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:15:29,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:15:29,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:15:29,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:15:29,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:15:29,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:15:29,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:15:29,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:15:29,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:15:29,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:15:29,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:15:29,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:15:29,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:15:29,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:15:29,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:15:29,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:15:29,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:15:29,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:15:29,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:15:29,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:15:29,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:15:29,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:15:29,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:15:29,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:15:29,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:15:29,070 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:15:29,070 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:15:29,071 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:15:29,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:15:29,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:15:29,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:15:29,072 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:15:29,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:15:29,073 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:15:29,074 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:15:29,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:15:29,075 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:15:29,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:15:29,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:15:29,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:15:29,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:15:29,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:15:29,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:15:29,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:15:29,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:15:29,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:15:29,084 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:15:29,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:15:29,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:15:29,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:15:29,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:15:29,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:15:29,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:15:29,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:15:29,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:15:29,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:15:29,089 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:15:29,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:15:29,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:15:29,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:15:29,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:15:29,091 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_897fc284-2b48-4c81-934d-f847ce9592ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 [2021-11-07 01:15:29,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:15:29,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:15:29,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:15:29,469 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:15:29,470 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:15:29,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-07 01:15:29,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data/9fb5652ba/f8401f9903df47debeaf14225df02bb3/FLAG01b0bcda6 [2021-11-07 01:15:30,299 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:15:30,300 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-07 01:15:30,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data/9fb5652ba/f8401f9903df47debeaf14225df02bb3/FLAG01b0bcda6 [2021-11-07 01:15:30,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data/9fb5652ba/f8401f9903df47debeaf14225df02bb3 [2021-11-07 01:15:30,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:15:30,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:15:30,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:30,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:15:30,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:15:30,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:30" (1/1) ... [2021-11-07 01:15:30,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b39696c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:30, skipping insertion in model container [2021-11-07 01:15:30,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:30" (1/1) ... [2021-11-07 01:15:30,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:15:30,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:15:31,190 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_897fc284-2b48-4c81-934d-f847ce9592ac/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-07 01:15:31,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:31,231 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:15:31,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58e27255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:31, skipping insertion in model container [2021-11-07 01:15:31,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:31,232 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:15:31,235 INFO L168 Benchmark]: Toolchain (without parser) took 708.42 ms. Allocated memory is still 109.1 MB. Free memory was 67.5 MB in the beginning and 72.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:15:31,236 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 109.1 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:15:31,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.00 ms. Allocated memory is still 109.1 MB. Free memory was 67.3 MB in the beginning and 72.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:15:31,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 109.1 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 704.00 ms. Allocated memory is still 109.1 MB. Free memory was 67.3 MB in the beginning and 72.2 MB in the end (delta: -4.9 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_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/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_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/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_897fc284-2b48-4c81-934d-f847ce9592ac/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 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:15:34,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:15:34,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:15:34,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:15:34,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:15:34,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:15:34,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:15:34,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:15:34,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:15:34,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:15:34,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:15:34,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:15:34,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:15:34,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:15:34,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:15:34,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:15:34,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:15:34,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:15:34,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:15:34,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:15:34,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:15:34,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:15:34,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:15:34,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:15:34,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:15:34,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:15:34,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:15:34,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:15:34,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:15:34,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:15:34,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:15:34,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:15:34,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:15:34,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:15:34,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:15:34,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:15:34,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:15:34,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:15:34,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:15:34,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:15:34,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:15:34,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:15:34,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:15:34,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:15:34,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:15:34,217 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:15:34,217 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:15:34,217 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:15:34,217 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:15:34,217 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:15:34,218 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:15:34,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:15:34,220 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:15:34,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:15:34,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:15:34,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:15:34,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:15:34,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:15:34,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:15:34,222 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:15:34,222 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:15:34,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:15:34,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:15:34,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:15:34,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:15:34,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:15:34,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:15:34,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:15:34,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:15:34,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:15:34,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:15:34,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:15:34,225 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:15:34,225 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:15:34,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:15:34,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:15:34,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:15:34,226 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_897fc284-2b48-4c81-934d-f847ce9592ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 [2021-11-07 01:15:34,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:15:34,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:15:34,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:15:34,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:15:34,679 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:15:34,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-07 01:15:34,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data/d891d7099/e19f697ba46d43f3be53c1ee2ee243ac/FLAG47085d9a6 [2021-11-07 01:15:35,494 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:15:35,495 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-07 01:15:35,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data/d891d7099/e19f697ba46d43f3be53c1ee2ee243ac/FLAG47085d9a6 [2021-11-07 01:15:35,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/data/d891d7099/e19f697ba46d43f3be53c1ee2ee243ac [2021-11-07 01:15:35,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:15:35,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:15:35,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:35,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:15:35,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:15:35,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:35" (1/1) ... [2021-11-07 01:15:35,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fce7ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:35, skipping insertion in model container [2021-11-07 01:15:35,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:35" (1/1) ... [2021-11-07 01:15:35,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:15:35,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:15:36,311 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_897fc284-2b48-4c81-934d-f847ce9592ac/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-07 01:15:36,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:36,362 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:15:36,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:15:36,537 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_897fc284-2b48-4c81-934d-f847ce9592ac/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-07 01:15:36,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:36,557 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:15:36,636 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_897fc284-2b48-4c81-934d-f847ce9592ac/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-07 01:15:36,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:15:36,660 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:15:36,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36 WrapperNode [2021-11-07 01:15:36,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:15:36,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:15:36,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:15:36,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:15:36,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:15:36,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:15:36,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:15:36,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:15:36,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:15:36,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:15:36,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:15:36,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:15:36,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (1/1) ... [2021-11-07 01:15:36,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:15:36,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:36,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:15:36,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:15:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:15:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:15:37,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:15:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:15:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:15:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:15:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:15:37,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:15:37,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:15:37,270 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 01:15:47,951 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-07 01:15:47,951 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-07 01:15:47,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:15:47,960 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 01:15:47,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:47 BoogieIcfgContainer [2021-11-07 01:15:47,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:15:47,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:15:47,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:15:47,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:15:47,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:15:35" (1/3) ... [2021-11-07 01:15:47,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4383c468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:47, skipping insertion in model container [2021-11-07 01:15:47,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:36" (2/3) ... [2021-11-07 01:15:47,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4383c468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:47, skipping insertion in model container [2021-11-07 01:15:47,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:47" (3/3) ... [2021-11-07 01:15:47,970 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-2.c [2021-11-07 01:15:47,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:15:47,977 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:15:48,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:15:48,050 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:15:48,050 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:15:48,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.7375) internal successors, (278), 161 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:15:48,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:48,096 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, 1, 1, 1] [2021-11-07 01:15:48,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash 271453869, now seen corresponding path program 1 times [2021-11-07 01:15:48,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:48,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346837336] [2021-11-07 01:15:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:48,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:48,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:48,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:48,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:15:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:48,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:48,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:48,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:15:49,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:49,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346837336] [2021-11-07 01:15:49,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346837336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:49,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:49,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:49,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587900008] [2021-11-07 01:15:49,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:49,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:49,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:49,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:49,094 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.7375) internal successors, (278), 161 states have internal predecessors, (278), 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 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:49,491 INFO L93 Difference]: Finished difference Result 610 states and 1056 transitions. [2021-11-07 01:15:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:49,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:15:49,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:49,515 INFO L225 Difference]: With dead ends: 610 [2021-11-07 01:15:49,515 INFO L226 Difference]: Without dead ends: 419 [2021-11-07 01:15:49,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-07 01:15:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-07 01:15:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.5406698564593302) internal successors, (644), 418 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 644 transitions. [2021-11-07 01:15:49,642 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 644 transitions. Word has length 47 [2021-11-07 01:15:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:49,644 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 644 transitions. [2021-11-07 01:15:49,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 644 transitions. [2021-11-07 01:15:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 01:15:49,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:49,659 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, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:49,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:49,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:49,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1390827129, now seen corresponding path program 1 times [2021-11-07 01:15:49,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:49,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193871026] [2021-11-07 01:15:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:49,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:49,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:49,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:49,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:15:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:50,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:50,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:50,611 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 01:15:50,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:51,021 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 01:15:51,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:51,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193871026] [2021-11-07 01:15:51,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193871026] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:51,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:51,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:51,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264408344] [2021-11-07 01:15:51,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:51,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:51,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:51,025 INFO L87 Difference]: Start difference. First operand 419 states and 644 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:51,724 INFO L93 Difference]: Finished difference Result 960 states and 1506 transitions. [2021-11-07 01:15:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:51,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 110 [2021-11-07 01:15:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:51,731 INFO L225 Difference]: With dead ends: 960 [2021-11-07 01:15:51,732 INFO L226 Difference]: Without dead ends: 687 [2021-11-07 01:15:51,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:51,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-07 01:15:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2021-11-07 01:15:51,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.5291545189504374) internal successors, (1049), 686 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1049 transitions. [2021-11-07 01:15:51,783 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1049 transitions. Word has length 110 [2021-11-07 01:15:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:51,786 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1049 transitions. [2021-11-07 01:15:51,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1049 transitions. [2021-11-07 01:15:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-07 01:15:51,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:51,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:51,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:52,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:52,019 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1114584605, now seen corresponding path program 1 times [2021-11-07 01:15:52,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:52,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442537419] [2021-11-07 01:15:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:52,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:52,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:52,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:52,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:15:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:52,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:52,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:53,090 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 01:15:53,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:53,657 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 01:15:53,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:53,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442537419] [2021-11-07 01:15:53,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442537419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:53,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:53,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:53,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139841025] [2021-11-07 01:15:53,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:53,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:53,661 INFO L87 Difference]: Start difference. First operand 687 states and 1049 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:54,323 INFO L93 Difference]: Finished difference Result 1499 states and 2319 transitions. [2021-11-07 01:15:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:54,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 176 [2021-11-07 01:15:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:54,331 INFO L225 Difference]: With dead ends: 1499 [2021-11-07 01:15:54,332 INFO L226 Difference]: Without dead ends: 958 [2021-11-07 01:15:54,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-07 01:15:54,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2021-11-07 01:15:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.522466039707419) internal successors, (1457), 957 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1457 transitions. [2021-11-07 01:15:54,378 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1457 transitions. Word has length 176 [2021-11-07 01:15:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:54,383 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1457 transitions. [2021-11-07 01:15:54,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1457 transitions. [2021-11-07 01:15:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-07 01:15:54,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:54,390 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, 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] [2021-11-07 01:15:54,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:54,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:54,606 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash 824529479, now seen corresponding path program 1 times [2021-11-07 01:15:54,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:54,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569278822] [2021-11-07 01:15:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:54,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:54,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:54,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:54,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:15:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:55,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:55,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 01:15:55,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 01:15:56,664 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:56,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569278822] [2021-11-07 01:15:56,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569278822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:56,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:56,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:56,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283691055] [2021-11-07 01:15:56,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:56,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:56,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:56,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:56,667 INFO L87 Difference]: Start difference. First operand 958 states and 1457 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:57,465 INFO L93 Difference]: Finished difference Result 2039 states and 3130 transitions. [2021-11-07 01:15:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:57,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 242 [2021-11-07 01:15:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:57,474 INFO L225 Difference]: With dead ends: 2039 [2021-11-07 01:15:57,475 INFO L226 Difference]: Without dead ends: 1227 [2021-11-07 01:15:57,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:57,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-11-07 01:15:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2021-11-07 01:15:57,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 1.5171288743882545) internal successors, (1860), 1226 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1860 transitions. [2021-11-07 01:15:57,539 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1860 transitions. Word has length 242 [2021-11-07 01:15:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:57,540 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1860 transitions. [2021-11-07 01:15:57,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1860 transitions. [2021-11-07 01:15:57,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-07 01:15:57,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:57,549 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, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:15:57,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:57,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:57,772 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:15:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash 220345402, now seen corresponding path program 1 times [2021-11-07 01:15:57,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:57,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808322783] [2021-11-07 01:15:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:57,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:57,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:57,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:57,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:15:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:58,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:58,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-07 01:15:59,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-07 01:16:00,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:00,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808322783] [2021-11-07 01:16:00,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808322783] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:00,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:00,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:16:00,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074450011] [2021-11-07 01:16:00,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:00,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:00,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:00,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:00,508 INFO L87 Difference]: Start difference. First operand 1227 states and 1860 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:01,116 INFO L93 Difference]: Finished difference Result 2577 states and 3934 transitions. [2021-11-07 01:16:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:01,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 316 [2021-11-07 01:16:01,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:01,129 INFO L225 Difference]: With dead ends: 2577 [2021-11-07 01:16:01,129 INFO L226 Difference]: Without dead ends: 1496 [2021-11-07 01:16:01,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-11-07 01:16:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1496. [2021-11-07 01:16:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 1.5123745819397993) internal successors, (2261), 1495 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2261 transitions. [2021-11-07 01:16:01,211 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2261 transitions. Word has length 316 [2021-11-07 01:16:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:01,212 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 2261 transitions. [2021-11-07 01:16:01,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2261 transitions. [2021-11-07 01:16:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-11-07 01:16:01,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:01,224 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, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:01,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:01,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:01,454 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:01,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash -99567682, now seen corresponding path program 1 times [2021-11-07 01:16:01,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:01,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127127231] [2021-11-07 01:16:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:01,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:01,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:01,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:16:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:02,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:02,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-07 01:16:03,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-07 01:16:05,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:05,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127127231] [2021-11-07 01:16:05,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127127231] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:05,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:05,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:16:05,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103495693] [2021-11-07 01:16:05,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:05,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:05,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:05,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:05,033 INFO L87 Difference]: Start difference. First operand 1496 states and 2261 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:05,701 INFO L93 Difference]: Finished difference Result 3113 states and 4731 transitions. [2021-11-07 01:16:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:05,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 390 [2021-11-07 01:16:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:05,716 INFO L225 Difference]: With dead ends: 3113 [2021-11-07 01:16:05,717 INFO L226 Difference]: Without dead ends: 1763 [2021-11-07 01:16:05,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:05,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-07 01:16:05,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2021-11-07 01:16:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.5085130533484676) internal successors, (2658), 1762 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2658 transitions. [2021-11-07 01:16:05,814 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2658 transitions. Word has length 390 [2021-11-07 01:16:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:05,814 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 2658 transitions. [2021-11-07 01:16:05,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2658 transitions. [2021-11-07 01:16:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-07 01:16:05,833 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:05,834 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:05,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:06,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:06,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1436869466, now seen corresponding path program 1 times [2021-11-07 01:16:06,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:06,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109803524] [2021-11-07 01:16:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:06,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:06,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:06,065 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:06,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:16:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:07,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:07,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 1045 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-11-07 01:16:08,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 1045 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-11-07 01:16:09,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:09,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109803524] [2021-11-07 01:16:09,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109803524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:09,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:09,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:16:09,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679587609] [2021-11-07 01:16:09,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:09,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:09,759 INFO L87 Difference]: Start difference. First operand 1763 states and 2658 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:10,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:10,270 INFO L93 Difference]: Finished difference Result 3648 states and 5525 transitions. [2021-11-07 01:16:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:10,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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 463 [2021-11-07 01:16:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:10,303 INFO L225 Difference]: With dead ends: 3648 [2021-11-07 01:16:10,303 INFO L226 Difference]: Without dead ends: 2031 [2021-11-07 01:16:10,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 922 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-11-07 01:16:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2031. [2021-11-07 01:16:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2030 states have (on average 1.5044334975369458) internal successors, (3054), 2030 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 3054 transitions. [2021-11-07 01:16:10,391 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 3054 transitions. Word has length 463 [2021-11-07 01:16:10,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:10,391 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 3054 transitions. [2021-11-07 01:16:10,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 3054 transitions. [2021-11-07 01:16:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2021-11-07 01:16:10,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:10,399 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:10,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:10,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:10,614 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash -841726051, now seen corresponding path program 1 times [2021-11-07 01:16:10,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:10,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834420496] [2021-11-07 01:16:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:10,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:10,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:10,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:10,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:16:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:12,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:12,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2217 backedges. 1208 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-11-07 01:16:13,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2217 backedges. 1208 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-11-07 01:16:14,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:14,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834420496] [2021-11-07 01:16:14,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834420496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:14,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:14,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:16:14,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684899168] [2021-11-07 01:16:14,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:14,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:14,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:14,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:14,787 INFO L87 Difference]: Start difference. First operand 2031 states and 3054 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:15,641 INFO L93 Difference]: Finished difference Result 4184 states and 6315 transitions. [2021-11-07 01:16:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 509 [2021-11-07 01:16:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:15,660 INFO L225 Difference]: With dead ends: 4184 [2021-11-07 01:16:15,660 INFO L226 Difference]: Without dead ends: 2299 [2021-11-07 01:16:15,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2021-11-07 01:16:15,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2021-11-07 01:16:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 1.5004351610095736) internal successors, (3448), 2298 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3448 transitions. [2021-11-07 01:16:15,778 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3448 transitions. Word has length 509 [2021-11-07 01:16:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:15,779 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3448 transitions. [2021-11-07 01:16:15,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3448 transitions. [2021-11-07 01:16:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2021-11-07 01:16:15,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:15,791 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:15,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:16,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:16,006 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1840380921, now seen corresponding path program 1 times [2021-11-07 01:16:16,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:16,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94768698] [2021-11-07 01:16:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:16,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:16,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:16,021 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:16,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:16:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:17,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:17,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3019 backedges. 1631 proven. 0 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2021-11-07 01:16:19,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3019 backedges. 1631 proven. 0 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2021-11-07 01:16:20,776 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:20,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94768698] [2021-11-07 01:16:20,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94768698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:20,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:20,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:16:20,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269875851] [2021-11-07 01:16:20,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:20,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:20,781 INFO L87 Difference]: Start difference. First operand 2299 states and 3448 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:21,306 INFO L93 Difference]: Finished difference Result 4721 states and 7103 transitions. [2021-11-07 01:16:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:21,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 584 [2021-11-07 01:16:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:21,326 INFO L225 Difference]: With dead ends: 4721 [2021-11-07 01:16:21,326 INFO L226 Difference]: Without dead ends: 2568 [2021-11-07 01:16:21,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1164 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-11-07 01:16:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2568. [2021-11-07 01:16:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 2567 states have (on average 1.4966887417218544) internal successors, (3842), 2567 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3842 transitions. [2021-11-07 01:16:21,462 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3842 transitions. Word has length 584 [2021-11-07 01:16:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:21,463 INFO L470 AbstractCegarLoop]: Abstraction has 2568 states and 3842 transitions. [2021-11-07 01:16:21,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3842 transitions. [2021-11-07 01:16:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2021-11-07 01:16:21,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:21,474 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:21,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:21,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:21,694 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1773637963, now seen corresponding path program 1 times [2021-11-07 01:16:21,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:21,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553319320] [2021-11-07 01:16:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:21,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:21,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:21,700 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:21,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:16:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:23,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:23,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 2122 proven. 0 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2021-11-07 01:16:25,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 2122 proven. 0 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2021-11-07 01:16:26,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:26,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553319320] [2021-11-07 01:16:26,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553319320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:26,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:26,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:16:26,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753620122] [2021-11-07 01:16:26,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:16:26,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:16:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:16:26,571 INFO L87 Difference]: Start difference. First operand 2568 states and 3842 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:27,061 INFO L93 Difference]: Finished difference Result 5120 states and 7675 transitions. [2021-11-07 01:16:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:16:27,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 659 [2021-11-07 01:16:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:27,077 INFO L225 Difference]: With dead ends: 5120 [2021-11-07 01:16:27,077 INFO L226 Difference]: Without dead ends: 2698 [2021-11-07 01:16:27,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 1315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:16:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-07 01:16:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2021-11-07 01:16:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2697 states have (on average 1.4946236559139785) internal successors, (4031), 2697 states have internal predecessors, (4031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4031 transitions. [2021-11-07 01:16:27,192 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4031 transitions. Word has length 659 [2021-11-07 01:16:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:27,193 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 4031 transitions. [2021-11-07 01:16:27,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4031 transitions. [2021-11-07 01:16:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2021-11-07 01:16:27,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:27,205 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 17, 17, 16, 16, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:27,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:27,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:27,420 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:27,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:27,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1020212381, now seen corresponding path program 1 times [2021-11-07 01:16:27,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:27,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61415357] [2021-11-07 01:16:27,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:27,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:27,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:27,424 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:27,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:16:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:29,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:29,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4496 backedges. 2482 proven. 0 refuted. 0 times theorem prover too weak. 2014 trivial. 0 not checked. [2021-11-07 01:16:31,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4496 backedges. 2482 proven. 0 refuted. 0 times theorem prover too weak. 2014 trivial. 0 not checked. [2021-11-07 01:16:32,712 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:32,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61415357] [2021-11-07 01:16:32,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61415357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:32,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:32,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:16:32,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382511138] [2021-11-07 01:16:32,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:32,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:32,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:32,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:32,714 INFO L87 Difference]: Start difference. First operand 2698 states and 4031 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:33,676 INFO L93 Difference]: Finished difference Result 5513 states and 8260 transitions. [2021-11-07 01:16:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:33,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 698 [2021-11-07 01:16:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:33,695 INFO L225 Difference]: With dead ends: 5513 [2021-11-07 01:16:33,695 INFO L226 Difference]: Without dead ends: 2961 [2021-11-07 01:16:33,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1392 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-11-07 01:16:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2961. [2021-11-07 01:16:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2960 states have (on average 1.491891891891892) internal successors, (4416), 2960 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:33,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4416 transitions. [2021-11-07 01:16:33,838 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4416 transitions. Word has length 698 [2021-11-07 01:16:33,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:33,838 INFO L470 AbstractCegarLoop]: Abstraction has 2961 states and 4416 transitions. [2021-11-07 01:16:33,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4416 transitions. [2021-11-07 01:16:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-11-07 01:16:33,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:33,851 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:16:33,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:34,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:34,069 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash 636236789, now seen corresponding path program 1 times [2021-11-07 01:16:34,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:34,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758978742] [2021-11-07 01:16:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:34,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:34,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:34,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:34,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:17:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:25,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:17:25,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:26,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:26,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:17:26,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:17:26,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:17:26,705 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-07 01:17:26,706 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 01:17:26,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:17:26,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:17:26,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:17:27,230 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 01:17:27,231 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 01:17:30,299 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:17:30,300 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 01:17:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 1716 proven. 0 refuted. 0 times theorem prover too weak. 3986 trivial. 0 not checked. [2021-11-07 01:17:30,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 1716 proven. 0 refuted. 0 times theorem prover too weak. 3986 trivial. 0 not checked. [2021-11-07 01:17:32,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:32,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758978742] [2021-11-07 01:17:32,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758978742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:32,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:32,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 01:17:32,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448203020] [2021-11-07 01:17:32,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:17:32,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:17:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:17:32,498 INFO L87 Difference]: Start difference. First operand 2961 states and 4416 transitions. Second operand has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:24,655 INFO L93 Difference]: Finished difference Result 13111 states and 19622 transitions. [2021-11-07 01:18:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:18:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 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 782 [2021-11-07 01:18:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:24,715 INFO L225 Difference]: With dead ends: 13111 [2021-11-07 01:18:24,716 INFO L226 Difference]: Without dead ends: 10160 [2021-11-07 01:18:24,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1565 GetRequests, 1556 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:18:24,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10160 states. [2021-11-07 01:18:24,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10160 to 3901. [2021-11-07 01:18:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3901 states, 3900 states have (on average 1.5707692307692307) internal successors, (6126), 3900 states have internal predecessors, (6126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 6126 transitions. [2021-11-07 01:18:25,024 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 6126 transitions. Word has length 782 [2021-11-07 01:18:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:25,025 INFO L470 AbstractCegarLoop]: Abstraction has 3901 states and 6126 transitions. [2021-11-07 01:18:25,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 6126 transitions. [2021-11-07 01:18:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-11-07 01:18:25,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:25,039 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:25,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:25,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:25,254 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:18:25,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1585771787, now seen corresponding path program 1 times [2021-11-07 01:18:25,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:25,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424363935] [2021-11-07 01:18:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:25,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:25,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:25,261 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:25,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:24:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:52,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:24:52,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:52,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:52,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:52,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:52,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:52,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:52,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,537 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 01:24:52,537 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 01:24:52,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:53,011 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 01:24:53,011 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 01:24:54,314 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:24:54,315 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 01:24:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 874 proven. 0 refuted. 0 times theorem prover too weak. 4828 trivial. 0 not checked. [2021-11-07 01:24:56,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 874 proven. 0 refuted. 0 times theorem prover too weak. 4828 trivial. 0 not checked. [2021-11-07 01:24:58,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:58,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424363935] [2021-11-07 01:24:58,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424363935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:58,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:24:58,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 01:24:58,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250596685] [2021-11-07 01:24:58,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:24:58,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:24:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:24:58,637 INFO L87 Difference]: Start difference. First operand 3901 states and 6126 transitions. Second operand has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:40,147 INFO L93 Difference]: Finished difference Result 13855 states and 21696 transitions. [2021-11-07 01:25:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:25:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 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 782 [2021-11-07 01:25:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:40,170 INFO L225 Difference]: With dead ends: 13855 [2021-11-07 01:25:40,171 INFO L226 Difference]: Without dead ends: 9964 [2021-11-07 01:25:40,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1564 GetRequests, 1556 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 01:25:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9964 states. [2021-11-07 01:25:40,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9964 to 4933. [2021-11-07 01:25:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4933 states, 4932 states have (on average 1.6080697485806974) internal successors, (7931), 4932 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 7931 transitions. [2021-11-07 01:25:40,577 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 7931 transitions. Word has length 782 [2021-11-07 01:25:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:40,577 INFO L470 AbstractCegarLoop]: Abstraction has 4933 states and 7931 transitions. [2021-11-07 01:25:40,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 7931 transitions. [2021-11-07 01:25:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-11-07 01:25:40,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:40,597 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:40,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:40,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:40,822 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:40,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1745672823, now seen corresponding path program 1 times [2021-11-07 01:25:40,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:40,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676284607] [2021-11-07 01:25:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:40,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:40,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:40,827 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:40,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897fc284-2b48-4c81-934d-f847ce9592ac/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:29:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:22,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:29:22,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:22,443 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 01:29:22,457 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 01:29:22,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:29:22,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:29:22,532 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 01:29:23,099 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-07 01:29:23,100 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 849 treesize of output 821 [2021-11-07 01:29:23,192 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 01:29:23,192 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 01:29:23,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:29:23,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:29:23,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:29:23,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 01:29:23,223 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 01:29:23,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,354 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 97 treesize of output 49 [2021-11-07 01:29:23,500 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 01:29:23,500 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 01:29:23,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:29:23,534 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 01:29:23,565 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 01:29:23,570 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 01:29:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5702 trivial. 0 not checked. [2021-11-07 01:29:25,633 INFO L328 TraceCheckSpWp]: Computing backward predicates...