./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/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_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 05:16:36,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:36,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:36,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:36,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:36,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:36,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:36,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:36,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:36,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:36,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:36,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:36,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:36,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:36,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:36,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:36,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:36,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:36,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:36,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:36,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:36,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:36,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:36,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:36,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:36,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:36,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:36,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:36,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:36,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:36,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:36,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:36,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:36,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:36,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:36,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:36,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:36,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:36,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:36,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:36,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:36,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:16:36,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:36,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:36,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:16:36,226 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:16:36,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:16:36,226 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:16:36,226 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:16:36,233 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:16:36,233 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:16:36,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:16:36,234 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:16:36,234 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:16:36,235 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:16:36,235 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:16:36,235 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:16:36,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:36,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:36,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:16:36,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:36,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:36,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:36,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:36,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:36,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:16:36,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:36,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:36,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:36,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:36,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:36,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:36,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:36,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:36,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:36,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:36,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:16:36,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:16:36,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:36,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:36,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:16:36,240 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_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 [2021-11-03 05:16:36,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:36,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:36,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:36,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:36,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:36,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-03 05:16:36,607 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data/57f4e6f22/21281aa246d446398bfb640f1b8e12dd/FLAGb4c03d9dc [2021-11-03 05:16:37,223 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:37,223 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-03 05:16:37,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data/57f4e6f22/21281aa246d446398bfb640f1b8e12dd/FLAGb4c03d9dc [2021-11-03 05:16:37,475 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data/57f4e6f22/21281aa246d446398bfb640f1b8e12dd [2021-11-03 05:16:37,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:37,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:37,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:37,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:37,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:37,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:37" (1/1) ... [2021-11-03 05:16:37,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df28106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:37, skipping insertion in model container [2021-11-03 05:16:37,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:37" (1/1) ... [2021-11-03 05:16:37,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:37,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:38,127 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_5ee0c4b1-f230-41b2-b016-6b72426a945d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-03 05:16:38,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:38,169 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) [2021-11-03 05:16:38,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b4e77fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:38, skipping insertion in model container [2021-11-03 05:16:38,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:38,170 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:16:38,175 INFO L168 Benchmark]: Toolchain (without parser) took 690.59 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 69.3 MB in the beginning and 95.3 MB in the end (delta: -26.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:16:38,175 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:16:38,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.52 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 69.3 MB in the beginning and 95.3 MB in the end (delta: -26.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:16:38,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 685.52 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 69.3 MB in the beginning and 95.3 MB in the end (delta: -26.0 MB). Peak memory consumption was 12.6 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_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/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_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 05:16:40,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:40,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:40,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:40,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:40,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:40,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:40,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:40,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:40,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:40,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:40,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:40,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:40,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:40,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:40,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:40,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:40,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:40,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:40,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:40,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:40,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:40,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:40,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:40,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:40,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:40,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:40,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:40,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:40,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:40,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:40,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:40,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:40,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:40,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:40,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:40,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:40,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:40,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:40,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:40,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:40,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:16:40,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:40,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:40,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:16:40,604 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:16:40,605 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:16:40,605 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:16:40,605 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:16:40,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:16:40,606 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:16:40,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:40,607 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:40,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:40,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:40,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:40,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:40,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:40,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:16:40,608 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:16:40,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:16:40,609 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:40,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:40,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:40,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:40,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:40,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:16:40,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:40,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:40,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:40,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:40,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:40,611 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:16:40,611 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:16:40,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:40,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:40,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:16:40,612 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_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61a0aa66b71092ec74a73b9f534556f5bbb6f25851e8b5ad307fc7dd7f051667 [2021-11-03 05:16:41,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:41,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:41,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:41,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:41,044 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:41,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-03 05:16:41,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data/38e2765d6/c2f9745dad8341cd8b235d5bad75ebd2/FLAG8452748f0 [2021-11-03 05:16:41,848 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:41,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c [2021-11-03 05:16:41,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data/38e2765d6/c2f9745dad8341cd8b235d5bad75ebd2/FLAG8452748f0 [2021-11-03 05:16:42,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/data/38e2765d6/c2f9745dad8341cd8b235d5bad75ebd2 [2021-11-03 05:16:42,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:42,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:42,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:42,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:42,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:42,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:42,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36039f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42, skipping insertion in model container [2021-11-03 05:16:42,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:42,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:42,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:42,602 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_5ee0c4b1-f230-41b2-b016-6b72426a945d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-03 05:16:42,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:42,658 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:16:42,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:42,797 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_5ee0c4b1-f230-41b2-b016-6b72426a945d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-03 05:16:42,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:42,810 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:16:42,941 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_5ee0c4b1-f230-41b2-b016-6b72426a945d/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-2.c[78808,78821] [2021-11-03 05:16:42,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:42,961 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:16:42,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42 WrapperNode [2021-11-03 05:16:42,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:42,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:42,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:16:42,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:16:42,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:43,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:16:43,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:16:43,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:16:43,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:16:43,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:16:43,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:16:43,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:16:43,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (1/1) ... [2021-11-03 05:16:43,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:16:43,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:16:43,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:16:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:16:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:16:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:16:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:16:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:16:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:16:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:16:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:16:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:16:43,499 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:16:52,826 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-03 05:16:52,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-03 05:16:52,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:16:52,836 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 05:16:52,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:52 BoogieIcfgContainer [2021-11-03 05:16:52,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:16:52,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:16:52,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:16:52,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:16:52,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:16:42" (1/3) ... [2021-11-03 05:16:52,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6290ca89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:52, skipping insertion in model container [2021-11-03 05:16:52,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:42" (2/3) ... [2021-11-03 05:16:52,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6290ca89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:52, skipping insertion in model container [2021-11-03 05:16:52,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:52" (3/3) ... [2021-11-03 05:16:52,846 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-2.c [2021-11-03 05:16:52,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:16:52,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:16:52,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:16:52,904 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 [2021-11-03 05:16:52,904 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:16:52,923 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) [2021-11-03 05:16:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 05:16:52,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:52,934 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] [2021-11-03 05:16:52,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:16:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash 271453869, now seen corresponding path program 1 times [2021-11-03 05:16:52,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:52,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674351002] [2021-11-03 05:16:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:52,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:52,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:52,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:52,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:16:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:53,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:16:53,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:53,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:53,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:53,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674351002] [2021-11-03 05:16:53,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674351002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:53,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:53,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:16:53,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985622315] [2021-11-03 05:16:53,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:53,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:53,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:53,963 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) [2021-11-03 05:16:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:54,348 INFO L93 Difference]: Finished difference Result 610 states and 1056 transitions. [2021-11-03 05:16:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:16:54,350 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 [2021-11-03 05:16:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:54,365 INFO L225 Difference]: With dead ends: 610 [2021-11-03 05:16:54,365 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 05:16:54,369 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 [2021-11-03 05:16:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 05:16:54,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-03 05:16:54,432 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) [2021-11-03 05:16:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 644 transitions. [2021-11-03 05:16:54,435 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 644 transitions. Word has length 47 [2021-11-03 05:16:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:54,436 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 644 transitions. [2021-11-03 05:16:54,437 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) [2021-11-03 05:16:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 644 transitions. [2021-11-03 05:16:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 05:16:54,444 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:54,445 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] [2021-11-03 05:16:54,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:54,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:54,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:16:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1390827129, now seen corresponding path program 1 times [2021-11-03 05:16:54,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:54,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810884875] [2021-11-03 05:16:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:54,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:54,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:54,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:54,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:16:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:55,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:16:55,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:55,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:55,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:55,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810884875] [2021-11-03 05:16:55,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810884875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:55,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:55,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:16:55,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377910287] [2021-11-03 05:16:55,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:55,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:55,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:55,800 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) [2021-11-03 05:16:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:56,684 INFO L93 Difference]: Finished difference Result 960 states and 1506 transitions. [2021-11-03 05:16:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:16:56,690 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 [2021-11-03 05:16:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:56,695 INFO L225 Difference]: With dead ends: 960 [2021-11-03 05:16:56,695 INFO L226 Difference]: Without dead ends: 687 [2021-11-03 05:16:56,698 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 [2021-11-03 05:16:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-03 05:16:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2021-11-03 05:16:56,771 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) [2021-11-03 05:16:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1049 transitions. [2021-11-03 05:16:56,778 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1049 transitions. Word has length 110 [2021-11-03 05:16:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:56,780 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1049 transitions. [2021-11-03 05:16:56,780 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) [2021-11-03 05:16:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1049 transitions. [2021-11-03 05:16:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-03 05:16:56,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:56,790 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] [2021-11-03 05:16:56,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 05:16:57,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:57,014 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:16:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1114584605, now seen corresponding path program 1 times [2021-11-03 05:16:57,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:57,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36555119] [2021-11-03 05:16:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:57,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:57,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:57,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:57,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:16:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:57,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:16:57,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 05:16:58,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 05:16:58,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:58,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36555119] [2021-11-03 05:16:58,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36555119] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:58,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:58,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:16:58,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069445428] [2021-11-03 05:16:58,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:58,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:58,689 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) [2021-11-03 05:16:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:59,678 INFO L93 Difference]: Finished difference Result 1499 states and 2319 transitions. [2021-11-03 05:16:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:16:59,679 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 [2021-11-03 05:16:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:59,686 INFO L225 Difference]: With dead ends: 1499 [2021-11-03 05:16:59,686 INFO L226 Difference]: Without dead ends: 958 [2021-11-03 05:16:59,688 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 [2021-11-03 05:16:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-03 05:16:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2021-11-03 05:16:59,722 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) [2021-11-03 05:16:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1457 transitions. [2021-11-03 05:16:59,727 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1457 transitions. Word has length 176 [2021-11-03 05:16:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:59,727 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1457 transitions. [2021-11-03 05:16:59,728 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) [2021-11-03 05:16:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1457 transitions. [2021-11-03 05:16:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-03 05:16:59,733 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:59,733 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] [2021-11-03 05:16:59,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:59,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:59,952 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:16:59,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 824529479, now seen corresponding path program 1 times [2021-11-03 05:16:59,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:59,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828644779] [2021-11-03 05:16:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:59,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:59,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:59,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:59,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:17:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:00,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:00,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-03 05:17:01,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-03 05:17:01,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:01,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828644779] [2021-11-03 05:17:01,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828644779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:01,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:01,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:01,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474145936] [2021-11-03 05:17:01,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:01,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:01,976 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) [2021-11-03 05:17:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:02,751 INFO L93 Difference]: Finished difference Result 2039 states and 3130 transitions. [2021-11-03 05:17:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:02,752 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 [2021-11-03 05:17:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:02,760 INFO L225 Difference]: With dead ends: 2039 [2021-11-03 05:17:02,760 INFO L226 Difference]: Without dead ends: 1227 [2021-11-03 05:17:02,762 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 [2021-11-03 05:17:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-11-03 05:17:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2021-11-03 05:17:02,806 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) [2021-11-03 05:17:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1860 transitions. [2021-11-03 05:17:02,812 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1860 transitions. Word has length 242 [2021-11-03 05:17:02,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:02,812 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1860 transitions. [2021-11-03 05:17:02,813 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) [2021-11-03 05:17:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1860 transitions. [2021-11-03 05:17:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-03 05:17:02,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:02,820 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] [2021-11-03 05:17:02,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:03,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:03,037 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash 220345402, now seen corresponding path program 1 times [2021-11-03 05:17:03,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:03,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125080437] [2021-11-03 05:17:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:03,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:03,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:03,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:03,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:17:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:03,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:03,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-03 05:17:04,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-03 05:17:05,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:05,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125080437] [2021-11-03 05:17:05,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125080437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:05,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:05,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:05,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529363477] [2021-11-03 05:17:05,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:05,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:05,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:05,621 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) [2021-11-03 05:17:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:06,359 INFO L93 Difference]: Finished difference Result 2577 states and 3934 transitions. [2021-11-03 05:17:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:06,360 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 [2021-11-03 05:17:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:06,369 INFO L225 Difference]: With dead ends: 2577 [2021-11-03 05:17:06,369 INFO L226 Difference]: Without dead ends: 1496 [2021-11-03 05:17:06,371 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 [2021-11-03 05:17:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-11-03 05:17:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1496. [2021-11-03 05:17:06,428 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) [2021-11-03 05:17:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2261 transitions. [2021-11-03 05:17:06,436 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2261 transitions. Word has length 316 [2021-11-03 05:17:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:06,437 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 2261 transitions. [2021-11-03 05:17:06,437 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) [2021-11-03 05:17:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2261 transitions. [2021-11-03 05:17:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-11-03 05:17:06,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:06,459 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] [2021-11-03 05:17:06,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:06,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:06,672 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash -99567682, now seen corresponding path program 1 times [2021-11-03 05:17:06,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:06,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781408917] [2021-11-03 05:17:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:06,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:06,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:06,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:06,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:17:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:07,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:07,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-03 05:17:08,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-11-03 05:17:09,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:09,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781408917] [2021-11-03 05:17:09,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781408917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:09,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:09,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:09,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652569510] [2021-11-03 05:17:09,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:09,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:09,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:09,623 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) [2021-11-03 05:17:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:10,469 INFO L93 Difference]: Finished difference Result 3113 states and 4731 transitions. [2021-11-03 05:17:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:10,471 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 [2021-11-03 05:17:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:10,481 INFO L225 Difference]: With dead ends: 3113 [2021-11-03 05:17:10,482 INFO L226 Difference]: Without dead ends: 1763 [2021-11-03 05:17:10,484 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 [2021-11-03 05:17:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-03 05:17:10,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2021-11-03 05:17:10,550 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) [2021-11-03 05:17:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2658 transitions. [2021-11-03 05:17:10,557 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2658 transitions. Word has length 390 [2021-11-03 05:17:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:10,558 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 2658 transitions. [2021-11-03 05:17:10,558 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) [2021-11-03 05:17:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2658 transitions. [2021-11-03 05:17:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-03 05:17:10,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:10,584 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] [2021-11-03 05:17:10,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:10,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:10,807 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1436869466, now seen corresponding path program 1 times [2021-11-03 05:17:10,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:10,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725419709] [2021-11-03 05:17:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:10,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:10,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:10,810 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:10,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:17:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:12,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:12,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 1045 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-11-03 05:17:13,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 1045 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-11-03 05:17:14,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:14,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725419709] [2021-11-03 05:17:14,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725419709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:14,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:14,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:14,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106381743] [2021-11-03 05:17:14,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:14,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:14,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:14,504 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) [2021-11-03 05:17:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:15,358 INFO L93 Difference]: Finished difference Result 3648 states and 5525 transitions. [2021-11-03 05:17:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:15,359 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 [2021-11-03 05:17:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:15,371 INFO L225 Difference]: With dead ends: 3648 [2021-11-03 05:17:15,372 INFO L226 Difference]: Without dead ends: 2031 [2021-11-03 05:17:15,375 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 [2021-11-03 05:17:15,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-11-03 05:17:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2031. [2021-11-03 05:17:15,466 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) [2021-11-03 05:17:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 3054 transitions. [2021-11-03 05:17:15,475 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 3054 transitions. Word has length 463 [2021-11-03 05:17:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:15,475 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 3054 transitions. [2021-11-03 05:17:15,476 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) [2021-11-03 05:17:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 3054 transitions. [2021-11-03 05:17:15,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2021-11-03 05:17:15,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:15,490 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] [2021-11-03 05:17:15,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:15,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:15,704 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash -841726051, now seen corresponding path program 1 times [2021-11-03 05:17:15,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:15,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461441549] [2021-11-03 05:17:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:15,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:15,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:15,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:15,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:17:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:17,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:17,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2217 backedges. 1208 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-11-03 05:17:18,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2217 backedges. 1208 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2021-11-03 05:17:19,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:19,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461441549] [2021-11-03 05:17:19,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461441549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:19,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:19,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:19,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815798990] [2021-11-03 05:17:19,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:19,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:19,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:19,508 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) [2021-11-03 05:17:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:20,030 INFO L93 Difference]: Finished difference Result 4184 states and 6315 transitions. [2021-11-03 05:17:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:20,030 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 [2021-11-03 05:17:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:20,052 INFO L225 Difference]: With dead ends: 4184 [2021-11-03 05:17:20,052 INFO L226 Difference]: Without dead ends: 2299 [2021-11-03 05:17:20,055 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 [2021-11-03 05:17:20,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2021-11-03 05:17:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2021-11-03 05:17:20,138 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) [2021-11-03 05:17:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3448 transitions. [2021-11-03 05:17:20,145 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3448 transitions. Word has length 509 [2021-11-03 05:17:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:20,146 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3448 transitions. [2021-11-03 05:17:20,146 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) [2021-11-03 05:17:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3448 transitions. [2021-11-03 05:17:20,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2021-11-03 05:17:20,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:20,166 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] [2021-11-03 05:17:20,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:20,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:20,380 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:20,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1840380921, now seen corresponding path program 1 times [2021-11-03 05:17:20,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:20,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916132161] [2021-11-03 05:17:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:20,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:20,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:20,386 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:20,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:17:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:22,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:22,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3019 backedges. 1631 proven. 0 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2021-11-03 05:17:23,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3019 backedges. 1631 proven. 0 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2021-11-03 05:17:24,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:24,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916132161] [2021-11-03 05:17:24,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916132161] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:24,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:24,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:24,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112458997] [2021-11-03 05:17:24,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:24,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:24,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:24,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:24,923 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) [2021-11-03 05:17:25,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:25,658 INFO L93 Difference]: Finished difference Result 4721 states and 7103 transitions. [2021-11-03 05:17:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:25,659 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 [2021-11-03 05:17:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:25,674 INFO L225 Difference]: With dead ends: 4721 [2021-11-03 05:17:25,675 INFO L226 Difference]: Without dead ends: 2568 [2021-11-03 05:17:25,678 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 [2021-11-03 05:17:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-11-03 05:17:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2568. [2021-11-03 05:17:25,778 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) [2021-11-03 05:17:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3842 transitions. [2021-11-03 05:17:25,785 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3842 transitions. Word has length 584 [2021-11-03 05:17:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:25,785 INFO L470 AbstractCegarLoop]: Abstraction has 2568 states and 3842 transitions. [2021-11-03 05:17:25,786 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) [2021-11-03 05:17:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3842 transitions. [2021-11-03 05:17:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2021-11-03 05:17:25,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:25,798 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] [2021-11-03 05:17:25,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:26,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:26,020 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1773637963, now seen corresponding path program 1 times [2021-11-03 05:17:26,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:26,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401441418] [2021-11-03 05:17:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:26,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:26,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:26,027 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:26,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:17:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:28,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:28,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 2122 proven. 0 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2021-11-03 05:17:29,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 2122 proven. 0 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2021-11-03 05:17:31,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:31,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401441418] [2021-11-03 05:17:31,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401441418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:31,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:31,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:17:31,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871779756] [2021-11-03 05:17:31,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:17:31,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:17:31,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:17:31,294 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) [2021-11-03 05:17:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:31,921 INFO L93 Difference]: Finished difference Result 5120 states and 7675 transitions. [2021-11-03 05:17:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:17:31,921 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 [2021-11-03 05:17:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:31,937 INFO L225 Difference]: With dead ends: 5120 [2021-11-03 05:17:31,937 INFO L226 Difference]: Without dead ends: 2698 [2021-11-03 05:17:31,941 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 [2021-11-03 05:17:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-03 05:17:32,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2021-11-03 05:17:32,044 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) [2021-11-03 05:17:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4031 transitions. [2021-11-03 05:17:32,051 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4031 transitions. Word has length 659 [2021-11-03 05:17:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:32,052 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 4031 transitions. [2021-11-03 05:17:32,053 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) [2021-11-03 05:17:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4031 transitions. [2021-11-03 05:17:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2021-11-03 05:17:32,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:32,073 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] [2021-11-03 05:17:32,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:32,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:32,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:32,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1020212381, now seen corresponding path program 1 times [2021-11-03 05:17:32,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:32,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590052096] [2021-11-03 05:17:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:32,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:32,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:32,292 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:32,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:17:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:34,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:17:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4496 backedges. 2482 proven. 0 refuted. 0 times theorem prover too weak. 2014 trivial. 0 not checked. [2021-11-03 05:17:35,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4496 backedges. 2482 proven. 0 refuted. 0 times theorem prover too weak. 2014 trivial. 0 not checked. [2021-11-03 05:17:37,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:37,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590052096] [2021-11-03 05:17:37,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590052096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:37,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:37,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:17:37,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672007063] [2021-11-03 05:17:37,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:37,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:37,582 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) [2021-11-03 05:17:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:38,321 INFO L93 Difference]: Finished difference Result 5513 states and 8260 transitions. [2021-11-03 05:17:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:38,322 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 [2021-11-03 05:17:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:38,342 INFO L225 Difference]: With dead ends: 5513 [2021-11-03 05:17:38,342 INFO L226 Difference]: Without dead ends: 2961 [2021-11-03 05:17:38,348 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 [2021-11-03 05:17:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-11-03 05:17:38,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2961. [2021-11-03 05:17:38,469 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) [2021-11-03 05:17:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4416 transitions. [2021-11-03 05:17:38,477 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4416 transitions. Word has length 698 [2021-11-03 05:17:38,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:38,478 INFO L470 AbstractCegarLoop]: Abstraction has 2961 states and 4416 transitions. [2021-11-03 05:17:38,479 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) [2021-11-03 05:17:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4416 transitions. [2021-11-03 05:17:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-11-03 05:17:38,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:38,490 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] [2021-11-03 05:17:38,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:38,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:38,704 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:17:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 636236789, now seen corresponding path program 1 times [2021-11-03 05:17:38,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:38,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172358695] [2021-11-03 05:17:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:38,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:38,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:38,709 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:38,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:18:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:27,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:18:27,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:28,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:28,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:28,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:18:28,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:18:28,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:18:28,667 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-03 05:18:28,668 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 [2021-11-03 05:18:28,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:18:28,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:18:28,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:18:29,177 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-03 05:18:29,177 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 [2021-11-03 05:18:31,670 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 05:18:31,671 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 [2021-11-03 05:18:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 1716 proven. 0 refuted. 0 times theorem prover too weak. 3986 trivial. 0 not checked. [2021-11-03 05:18:31,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 1716 proven. 0 refuted. 0 times theorem prover too weak. 3986 trivial. 0 not checked. [2021-11-03 05:18:33,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:18:33,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172358695] [2021-11-03 05:18:33,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172358695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:33,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:33,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-03 05:18:33,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192437771] [2021-11-03 05:18:33,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:18:33,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:18:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:18:33,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:18:33,548 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) [2021-11-03 05:19:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:37,869 INFO L93 Difference]: Finished difference Result 13111 states and 19622 transitions. [2021-11-03 05:19:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:19:37,872 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 [2021-11-03 05:19:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:37,918 INFO L225 Difference]: With dead ends: 13111 [2021-11-03 05:19:37,918 INFO L226 Difference]: Without dead ends: 10160 [2021-11-03 05:19:37,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1565 GetRequests, 1556 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:19:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10160 states. [2021-11-03 05:19:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10160 to 3901. [2021-11-03 05:19:38,250 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) [2021-11-03 05:19:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 6126 transitions. [2021-11-03 05:19:38,261 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 6126 transitions. Word has length 782 [2021-11-03 05:19:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:38,262 INFO L470 AbstractCegarLoop]: Abstraction has 3901 states and 6126 transitions. [2021-11-03 05:19:38,263 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) [2021-11-03 05:19:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 6126 transitions. [2021-11-03 05:19:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-11-03 05:19:38,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:38,276 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] [2021-11-03 05:19:38,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:38,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:19:38,500 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:19:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1585771787, now seen corresponding path program 1 times [2021-11-03 05:19:38,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:19:38,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805985475] [2021-11-03 05:19:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:38,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:19:38,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:19:38,506 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:19:38,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:25:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:45,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:25:45,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:25:45,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:25:45,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:25:45,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:25:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:25:45,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:25:45,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:25:45,664 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-03 05:25:45,665 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 [2021-11-03 05:25:45,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:25:45,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:25:45,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:25:46,141 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-03 05:25:46,141 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 [2021-11-03 05:25:47,483 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 05:25:47,484 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 [2021-11-03 05:25:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 874 proven. 0 refuted. 0 times theorem prover too weak. 4828 trivial. 0 not checked. [2021-11-03 05:25:49,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:25:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 874 proven. 0 refuted. 0 times theorem prover too weak. 4828 trivial. 0 not checked. [2021-11-03 05:25:52,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:25:52,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805985475] [2021-11-03 05:25:52,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805985475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:52,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:52,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-03 05:25:52,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918054704] [2021-11-03 05:25:52,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:25:52,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:25:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:25:52,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:25:52,088 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) [2021-11-03 05:26:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:33,169 INFO L93 Difference]: Finished difference Result 12953 states and 20002 transitions. [2021-11-03 05:26:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:26:33,179 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 [2021-11-03 05:26:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:33,203 INFO L225 Difference]: With dead ends: 12953 [2021-11-03 05:26:33,204 INFO L226 Difference]: Without dead ends: 9062 [2021-11-03 05:26:33,208 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 [2021-11-03 05:26:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9062 states. [2021-11-03 05:26:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9062 to 4933. [2021-11-03 05:26:33,505 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) [2021-11-03 05:26:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 7931 transitions. [2021-11-03 05:26:33,512 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 7931 transitions. Word has length 782 [2021-11-03 05:26:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:33,513 INFO L470 AbstractCegarLoop]: Abstraction has 4933 states and 7931 transitions. [2021-11-03 05:26:33,513 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) [2021-11-03 05:26:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 7931 transitions. [2021-11-03 05:26:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2021-11-03 05:26:33,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:33,529 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] [2021-11-03 05:26:33,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:26:33,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:26:33,752 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:26:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1745672823, now seen corresponding path program 1 times [2021-11-03 05:26:33,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:26:33,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695761934] [2021-11-03 05:26:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:33,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:26:33,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:26:33,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:26:33,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee0c4b1-f230-41b2-b016-6b72426a945d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:30:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:30:09,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:30:09,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:30:09,118 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 [2021-11-03 05:30:09,130 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 [2021-11-03 05:30:09,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:09,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 05:30:09,221 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 [2021-11-03 05:30:09,847 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-03 05:30:09,847 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 [2021-11-03 05:30:09,949 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-03 05:30:09,950 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 [2021-11-03 05:30:09,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:09,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 05:30:09,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:09,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-03 05:30:09,983 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 [2021-11-03 05:30:09,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:09,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:09,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,178 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 [2021-11-03 05:30:10,312 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-03 05:30:10,312 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 [2021-11-03 05:30:10,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:30:10,352 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 [2021-11-03 05:30:10,388 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 [2021-11-03 05:30:10,393 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 [2021-11-03 05:30:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5702 trivial. 0 not checked. [2021-11-03 05:30:12,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:30:15,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:15,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-03 05:30:15,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:15,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-03 05:30:15,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:15,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 05:30:15,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:15,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-03 05:30:15,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:15,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-03 05:30:15,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:15,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-03 05:30:15,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:15,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-03 05:30:15,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:30:15,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-03 05:30:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5702 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5702 trivial. 0 not checked. [2021-11-03 05:30:15,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:30:15,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695761934] [2021-11-03 05:30:15,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695761934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:30:15,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:30:15,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:30:15,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34370827] [2021-11-03 05:30:15,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:30:15,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:30:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:30:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:30:15,845 INFO L87 Difference]: Start difference. First operand 4933 states and 7931 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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)