./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:29,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:29,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:29,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:29,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:29,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:29,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:29,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:29,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:29,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:29,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:29,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:29,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:29,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:29,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:29,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:29,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:29,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:29,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:29,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:29,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:29,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:29,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:29,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:29,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:29,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:29,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:29,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:29,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:29,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:29,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:29,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:29,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:29,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:29,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:29,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:29,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:29,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:29,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:29,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:29,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:29,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 02:08:29,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:29,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:29,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:29,386 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:29,387 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:29,393 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:29,394 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:08:29,394 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:29,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:29,394 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:08:29,395 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:08:29,396 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:29,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:08:29,396 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:08:29,396 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:08:29,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:08:29,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:08:29,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:29,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:08:29,398 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:08:29,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:08:29,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:08:29,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:29,399 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:08:29,399 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:08:29,399 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:08:29,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:29,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:29,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:08:29,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:29,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:29,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:29,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:29,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:29,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:29,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:08:29,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:08:29,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:29,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:29,404 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_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 [2021-11-07 02:08:29,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:29,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:29,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:29,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:29,700 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:29,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-07 02:08:29,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data/bc7d6a2db/fc6bdecf9ecb440bb17418767d0796aa/FLAG77818f1f0 [2021-11-07 02:08:30,389 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:30,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-07 02:08:30,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data/bc7d6a2db/fc6bdecf9ecb440bb17418767d0796aa/FLAG77818f1f0 [2021-11-07 02:08:30,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data/bc7d6a2db/fc6bdecf9ecb440bb17418767d0796aa [2021-11-07 02:08:30,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:30,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:30,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:30,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:30,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:30,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:30,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620158b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:30, skipping insertion in model container [2021-11-07 02:08:30,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:30" (1/1) ... [2021-11-07 02:08:30,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:30,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:31,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:31,057 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:08:31,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@707cafa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:31, skipping insertion in model container [2021-11-07 02:08:31,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:31,060 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:08:31,062 INFO L168 Benchmark]: Toolchain (without parser) took 404.02 ms. Allocated memory is still 119.5 MB. Free memory was 84.4 MB in the beginning and 95.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:08:31,064 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 49.5 MB in the beginning and 49.4 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:08:31,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.31 ms. Allocated memory is still 119.5 MB. Free memory was 84.2 MB in the beginning and 95.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:08:31,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory was 49.5 MB in the beginning and 49.4 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.31 ms. Allocated memory is still 119.5 MB. Free memory was 84.2 MB in the beginning and 95.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 555]: 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_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:33,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:33,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:33,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:33,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:33,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:33,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:33,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:33,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:33,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:33,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:33,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:33,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:33,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:33,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:33,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:33,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:33,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:33,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:33,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:33,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:33,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:33,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:33,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:33,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:33,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:33,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:33,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:33,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:33,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:33,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:33,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:33,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:33,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:33,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:33,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:33,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:33,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:33,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:33,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:33,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:33,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 02:08:33,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:33,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:33,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:33,539 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:33,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:33,540 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:33,540 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:33,540 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:33,541 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:33,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 02:08:33,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 02:08:33,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:33,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:08:33,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:08:33,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:08:33,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:08:33,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:33,544 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 02:08:33,545 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 02:08:33,545 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 02:08:33,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:33,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:33,545 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:08:33,546 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:08:33,546 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:08:33,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:33,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:33,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:08:33,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:33,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:33,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:33,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:33,548 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:08:33,548 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:33,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:33,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:33,548 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_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fe3fcfd23f0db0414af322b91d2d32e3943484ebce4a900c0ef2633a5499508 [2021-11-07 02:08:33,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:33,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:33,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:33,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:33,937 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:33,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-07 02:08:34,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data/b611b494c/701d835d5f974464ab25ef01bce846d4/FLAG471d03f48 [2021-11-07 02:08:34,726 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:34,731 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-2.i [2021-11-07 02:08:34,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data/b611b494c/701d835d5f974464ab25ef01bce846d4/FLAG471d03f48 [2021-11-07 02:08:34,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/data/b611b494c/701d835d5f974464ab25ef01bce846d4 [2021-11-07 02:08:34,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:34,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:34,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:34,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:34,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:34,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:34" (1/1) ... [2021-11-07 02:08:34,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413de721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:34, skipping insertion in model container [2021-11-07 02:08:34,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:34" (1/1) ... [2021-11-07 02:08:34,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:34,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:35,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:35,224 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:08:35,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:35,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:35,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:08:35,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:35,405 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:08:35,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35 WrapperNode [2021-11-07 02:08:35,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:35,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:35,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:08:35,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:08:35,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:35,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:08:35,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:08:35,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:08:35,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:08:35,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:08:35,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:08:35,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:08:35,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (1/1) ... [2021-11-07 02:08:35,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:35,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:08:35,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:08:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:08:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:08:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:08:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:08:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:08:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:08:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:08:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:08:35,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:08:35,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:08:36,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:08:36,393 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-07 02:08:36,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:36 BoogieIcfgContainer [2021-11-07 02:08:36,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:08:36,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:08:36,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:08:36,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:08:36,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:34" (1/3) ... [2021-11-07 02:08:36,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0d44b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:36, skipping insertion in model container [2021-11-07 02:08:36,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:35" (2/3) ... [2021-11-07 02:08:36,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0d44b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:36, skipping insertion in model container [2021-11-07 02:08:36,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:36" (3/3) ... [2021-11-07 02:08:36,416 INFO L111 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04-2.i [2021-11-07 02:08:36,421 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:08:36,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-07 02:08:36,465 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:08:36,471 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:08:36,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-07 02:08:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 50 states have (on average 2.12) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:36,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 02:08:36,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:36,511 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 02:08:36,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:08:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:36,517 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2021-11-07 02:08:36,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:36,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551043854] [2021-11-07 02:08:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:36,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:36,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:36,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:08:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:36,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:36,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:36,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:08:36,736 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 02:08:36,737 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 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-07 02:08:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:36,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:36,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:36,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551043854] [2021-11-07 02:08:36,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551043854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:36,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:36,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:36,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44364295] [2021-11-07 02:08:36,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:08:36,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:08:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:36,840 INFO L87 Difference]: Start difference. First operand has 97 states, 50 states have (on average 2.12) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:37,277 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2021-11-07 02:08:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 4 [2021-11-07 02:08:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:37,289 INFO L225 Difference]: With dead ends: 147 [2021-11-07 02:08:37,289 INFO L226 Difference]: Without dead ends: 145 [2021-11-07 02:08:37,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:37,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-07 02:08:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2021-11-07 02:08:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 91 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:37,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-11-07 02:08:37,380 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 4 [2021-11-07 02:08:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:37,380 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-11-07 02:08:37,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-11-07 02:08:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 02:08:37,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:37,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 02:08:37,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:37,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:37,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:08:37,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2021-11-07 02:08:37,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:37,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217530749] [2021-11-07 02:08:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:37,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:37,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:37,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:37,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:08:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:37,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:08:37,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:37,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:08:37,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:08:37,809 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 02:08:37,809 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 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-07 02:08:37,821 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 02:08:37,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-11-07 02:08:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:37,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:38,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:38,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217530749] [2021-11-07 02:08:38,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217530749] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:38,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:38,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:08:38,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059260277] [2021-11-07 02:08:38,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:38,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:38,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:38,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:08:38,103 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:00,874 INFO L93 Difference]: Finished difference Result 264 states and 288 transitions. [2021-11-07 02:09:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:09:00,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 4 [2021-11-07 02:09:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:00,881 INFO L225 Difference]: With dead ends: 264 [2021-11-07 02:09:00,881 INFO L226 Difference]: Without dead ends: 264 [2021-11-07 02:09:00,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:09:00,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-07 02:09:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 108. [2021-11-07 02:09:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 68 states have (on average 1.838235294117647) internal successors, (125), 107 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2021-11-07 02:09:00,900 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 4 [2021-11-07 02:09:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:00,900 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2021-11-07 02:09:00,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:00,901 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2021-11-07 02:09:00,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:09:00,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:00,902 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:09:00,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:01,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:01,102 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2021-11-07 02:09:01,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:01,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108692105] [2021-11-07 02:09:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:01,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:01,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:01,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:01,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:09:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:01,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:01,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:01,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:01,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:01,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:01,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108692105] [2021-11-07 02:09:01,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108692105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:01,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:01,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:09:01,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095145929] [2021-11-07 02:09:01,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:01,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:01,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:01,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:01,267 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:01,555 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2021-11-07 02:09:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:01,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-07 02:09:01,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:01,557 INFO L225 Difference]: With dead ends: 137 [2021-11-07 02:09:01,557 INFO L226 Difference]: Without dead ends: 137 [2021-11-07 02:09:01,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:01,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-07 02:09:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 106. [2021-11-07 02:09:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 68 states have (on average 1.7941176470588236) internal successors, (122), 105 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-11-07 02:09:01,571 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 5 [2021-11-07 02:09:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:01,572 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-11-07 02:09:01,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-11-07 02:09:01,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:09:01,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:01,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:09:01,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:01,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:01,787 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:01,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2021-11-07 02:09:01,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:01,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721035108] [2021-11-07 02:09:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:01,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:01,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:01,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:01,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:09:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:01,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:01,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:01,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:01,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:01,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:01,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721035108] [2021-11-07 02:09:01,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721035108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:01,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:01,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:09:01,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770644651] [2021-11-07 02:09:01,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:01,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:01,997 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:02,476 INFO L93 Difference]: Finished difference Result 174 states and 197 transitions. [2021-11-07 02:09:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:02,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 5 [2021-11-07 02:09:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:02,479 INFO L225 Difference]: With dead ends: 174 [2021-11-07 02:09:02,479 INFO L226 Difference]: Without dead ends: 174 [2021-11-07 02:09:02,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-07 02:09:02,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 105. [2021-11-07 02:09:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.7647058823529411) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-11-07 02:09:02,489 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 5 [2021-11-07 02:09:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:02,489 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-11-07 02:09:02,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-11-07 02:09:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:09:02,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:02,490 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:02,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:02,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:02,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash 234239181, now seen corresponding path program 1 times [2021-11-07 02:09:02,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:02,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502347798] [2021-11-07 02:09:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:02,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:02,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:02,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:02,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:09:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:02,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:02,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:02,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:02,873 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 02:09:02,874 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 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-07 02:09:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:02,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:02,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:02,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502347798] [2021-11-07 02:09:02,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502347798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:02,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:02,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:09:02,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282133395] [2021-11-07 02:09:02,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:02,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:02,955 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:03,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:03,282 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-11-07 02:09:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:03,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 02:09:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:03,284 INFO L225 Difference]: With dead ends: 151 [2021-11-07 02:09:03,284 INFO L226 Difference]: Without dead ends: 151 [2021-11-07 02:09:03,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:03,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-07 02:09:03,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 101. [2021-11-07 02:09:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 100 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2021-11-07 02:09:03,292 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 9 [2021-11-07 02:09:03,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:03,292 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2021-11-07 02:09:03,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:03,293 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2021-11-07 02:09:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:09:03,293 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:03,293 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:03,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:03,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:03,508 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash 234239182, now seen corresponding path program 1 times [2021-11-07 02:09:03,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:03,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066406080] [2021-11-07 02:09:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:03,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:03,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:03,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:03,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:09:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:03,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:09:03,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:03,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:03,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:03,756 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 02:09:03,757 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 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-07 02:09:03,765 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 02:09:03,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-07 02:09:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:03,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:06,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:06,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066406080] [2021-11-07 02:09:06,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066406080] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:06,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:06,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:09:06,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734813411] [2021-11-07 02:09:06,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:06,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:06,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 02:09:06,433 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:14,477 INFO L93 Difference]: Finished difference Result 349 states and 379 transitions. [2021-11-07 02:09:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:09:14,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 02:09:14,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:14,480 INFO L225 Difference]: With dead ends: 349 [2021-11-07 02:09:14,481 INFO L226 Difference]: Without dead ends: 349 [2021-11-07 02:09:14,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 02:09:14,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-07 02:09:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 97. [2021-11-07 02:09:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.6176470588235294) internal successors, (110), 96 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2021-11-07 02:09:14,489 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 9 [2021-11-07 02:09:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:14,489 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2021-11-07 02:09:14,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2021-11-07 02:09:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 02:09:14,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:14,490 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:14,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:14,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:14,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 184732728, now seen corresponding path program 1 times [2021-11-07 02:09:14,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:14,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443448584] [2021-11-07 02:09:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:14,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:14,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:14,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:09:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:14,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:09:14,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:14,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:14,851 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 22 treesize of output 18 [2021-11-07 02:09:14,901 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 24 treesize of output 12 [2021-11-07 02:09:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:14,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:14,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:14,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443448584] [2021-11-07 02:09:14,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443448584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:14,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:14,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:09:14,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200107494] [2021-11-07 02:09:14,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:14,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:14,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:14,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:09:14,988 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:15,448 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2021-11-07 02:09:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:09:15,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-11-07 02:09:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:15,450 INFO L225 Difference]: With dead ends: 106 [2021-11-07 02:09:15,450 INFO L226 Difference]: Without dead ends: 106 [2021-11-07 02:09:15,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:09:15,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-07 02:09:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2021-11-07 02:09:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.619718309859155) internal successors, (115), 99 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2021-11-07 02:09:15,456 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 13 [2021-11-07 02:09:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:15,456 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2021-11-07 02:09:15,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:15,456 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2021-11-07 02:09:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 02:09:15,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:15,457 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:15,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:15,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:15,670 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:15,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash 184732729, now seen corresponding path program 1 times [2021-11-07 02:09:15,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:15,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32442216] [2021-11-07 02:09:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:15,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:15,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:15,671 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:15,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:09:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:15,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:09:15,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:15,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:15,830 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 19 treesize of output 15 [2021-11-07 02:09:15,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 02:09:15,972 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 39 treesize of output 27 [2021-11-07 02:09:15,978 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 24 treesize of output 12 [2021-11-07 02:09:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:16,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:16,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:16,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32442216] [2021-11-07 02:09:16,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32442216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:16,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:16,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 02:09:16,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094914797] [2021-11-07 02:09:16,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:09:16,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:09:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:09:16,586 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:18,080 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2021-11-07 02:09:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:09:18,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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 13 [2021-11-07 02:09:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:18,081 INFO L225 Difference]: With dead ends: 101 [2021-11-07 02:09:18,081 INFO L226 Difference]: Without dead ends: 101 [2021-11-07 02:09:18,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:09:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-07 02:09:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-11-07 02:09:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.591549295774648) internal successors, (113), 99 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2021-11-07 02:09:18,085 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 13 [2021-11-07 02:09:18,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:18,086 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2021-11-07 02:09:18,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2021-11-07 02:09:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:09:18,087 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:18,087 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:18,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:18,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:18,306 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1960329087, now seen corresponding path program 1 times [2021-11-07 02:09:18,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:18,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307009531] [2021-11-07 02:09:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:18,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:18,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:18,307 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:18,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:09:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:18,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:09:18,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:18,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:09:18,700 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 16 treesize of output 8 [2021-11-07 02:09:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:18,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:18,759 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 30 treesize of output 26 [2021-11-07 02:09:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:18,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:18,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307009531] [2021-11-07 02:09:18,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307009531] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:18,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:18,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:09:18,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213039850] [2021-11-07 02:09:18,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:18,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:18,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:18,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:09:18,942 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:19,259 INFO L93 Difference]: Finished difference Result 139 states and 148 transitions. [2021-11-07 02:09:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:09:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-11-07 02:09:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:19,261 INFO L225 Difference]: With dead ends: 139 [2021-11-07 02:09:19,261 INFO L226 Difference]: Without dead ends: 139 [2021-11-07 02:09:19,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:09:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-07 02:09:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 100. [2021-11-07 02:09:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2021-11-07 02:09:19,266 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 16 [2021-11-07 02:09:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:19,267 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2021-11-07 02:09:19,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2021-11-07 02:09:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:09:19,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:19,268 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:19,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:19,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:19,480 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:19,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1960329083, now seen corresponding path program 1 times [2021-11-07 02:09:19,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:19,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037287406] [2021-11-07 02:09:19,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:19,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:19,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:19,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:19,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:09:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:19,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:09:19,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:19,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:19,801 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 19 treesize of output 15 [2021-11-07 02:09:19,854 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 19 treesize of output 11 [2021-11-07 02:09:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:19,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:19,940 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 38 treesize of output 34 [2021-11-07 02:09:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:20,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:20,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037287406] [2021-11-07 02:09:20,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037287406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:20,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:20,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:09:20,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227706975] [2021-11-07 02:09:20,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:20,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:20,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:20,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:09:20,271 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:20,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:20,816 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2021-11-07 02:09:20,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:09:20,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 16 [2021-11-07 02:09:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:20,818 INFO L225 Difference]: With dead ends: 131 [2021-11-07 02:09:20,818 INFO L226 Difference]: Without dead ends: 131 [2021-11-07 02:09:20,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:09:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-07 02:09:20,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2021-11-07 02:09:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 99 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2021-11-07 02:09:20,823 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 16 [2021-11-07 02:09:20,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:20,823 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2021-11-07 02:09:20,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2021-11-07 02:09:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:09:20,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:20,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:20,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:21,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:21,031 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:21,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1960329082, now seen corresponding path program 1 times [2021-11-07 02:09:21,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:21,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763335742] [2021-11-07 02:09:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:21,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:21,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:21,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:21,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:09:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:21,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 02:09:21,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:21,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:21,450 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 17 treesize of output 13 [2021-11-07 02:09:21,460 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 11 treesize of output 7 [2021-11-07 02:09:21,537 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 31 treesize of output 23 [2021-11-07 02:09:21,542 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 20 treesize of output 12 [2021-11-07 02:09:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:21,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:21,796 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 60 treesize of output 56 [2021-11-07 02:09:21,801 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 90 treesize of output 82 [2021-11-07 02:09:22,166 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 40 treesize of output 32 [2021-11-07 02:09:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:22,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:22,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763335742] [2021-11-07 02:09:22,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763335742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:22,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:22,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 02:09:22,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843808778] [2021-11-07 02:09:22,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:09:22,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:22,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:09:22,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:09:22,574 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:24,113 INFO L93 Difference]: Finished difference Result 235 states and 251 transitions. [2021-11-07 02:09:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:09:24,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 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 16 [2021-11-07 02:09:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:24,116 INFO L225 Difference]: With dead ends: 235 [2021-11-07 02:09:24,116 INFO L226 Difference]: Without dead ends: 235 [2021-11-07 02:09:24,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:09:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-07 02:09:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 100. [2021-11-07 02:09:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.5492957746478873) internal successors, (110), 99 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2021-11-07 02:09:24,121 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 16 [2021-11-07 02:09:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:24,122 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2021-11-07 02:09:24,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2021-11-07 02:09:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 02:09:24,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:24,123 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:24,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:24,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:24,331 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-11-07 02:09:24,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash 50233868, now seen corresponding path program 1 times [2021-11-07 02:09:24,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:24,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131209689] [2021-11-07 02:09:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:24,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:24,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:24,333 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:24,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:09:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:24,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:09:24,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:24,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 02:09:24,643 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 02:09:24,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-07 02:09:24,713 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 26 treesize of output 22 [2021-11-07 02:09:25,023 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-07 02:09:25,023 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 136 treesize of output 47 [2021-11-07 02:09:25,131 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 44 treesize of output 26 [2021-11-07 02:09:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:25,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:25,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:25,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-07 02:09:32,093 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_create_data_~counter~0 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem10.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (_ bv4 32) c_ULTIMATE.start_create_data_~data~0.offset))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_create_data_~data~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse0 (let ((.cse1 (bvmul ULTIMATE.start_create_data_~counter~0 (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_create_data_#t~mem10.offset| .cse1) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_create_data_#t~mem10.offset| (_ bv1 32) .cse1) v_DerPreprocessor_2) (bvadd (_ bv2 32) |ULTIMATE.start_create_data_#t~mem10.offset| .cse1) v_DerPreprocessor_3) (bvadd (_ bv3 32) |ULTIMATE.start_create_data_#t~mem10.offset| .cse1) v_DerPreprocessor_4)))) c_ULTIMATE.start_create_data_~data~0.base) .cse2))))))))) (_ bv1 1)))) is different from false [2021-11-07 02:09:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-07 02:09:39,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:39,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131209689] [2021-11-07 02:09:39,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131209689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:39,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1868497082] [2021-11-07 02:09:39,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:39,007 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:39,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:39,009 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:39,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b264e77a-a9ff-4d2a-ac8f-d1f301231f2b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 02:09:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:39,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:09:39,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:39,368 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 02:09:39,370 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 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-07 02:09:39,407 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 02:09:39,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-07 02:09:39,435 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 26 treesize of output 22 [2021-11-07 02:09:39,671 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-07 02:09:39,671 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 136 treesize of output 47 [2021-11-07 02:09:39,754 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 44 treesize of output 26 [2021-11-07 02:09:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:39,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:39,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:39,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-11-07 02:09:41,882 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (ULTIMATE.start_create_data_~counter~0 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_create_data_#t~mem10.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem10.base| (let ((.cse0 (bvmul ULTIMATE.start_create_data_~counter~0 (_ bv4 32)))) (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem10.base|) (bvadd |ULTIMATE.start_create_data_#t~mem10.offset| .cse0) v_DerPreprocessor_5) (bvadd |ULTIMATE.start_create_data_#t~mem10.offset| (_ bv1 32) .cse0) v_DerPreprocessor_6) (bvadd (_ bv2 32) |ULTIMATE.start_create_data_#t~mem10.offset| .cse0) v_DerPreprocessor_7) (bvadd (_ bv3 32) |ULTIMATE.start_create_data_#t~mem10.offset| .cse0) v_DerPreprocessor_8))) c_ULTIMATE.start_create_data_~data~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_create_data_~data~0.offset))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false