./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_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_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/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_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/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_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:04,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:04,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:04,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:04,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:04,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:04,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:04,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:04,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:04,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:04,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:04,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:04,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:04,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:04,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:04,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:04,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:04,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:04,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:04,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:04,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:04,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:04,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:04,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:04,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:04,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:04,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:04,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:04,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:04,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:04,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:04,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:04,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:04,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:04,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:04,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:04,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:04,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:04,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:04,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:04,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:04,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 00:54:04,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:04,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:04,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:04,365 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:04,366 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:04,366 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:04,366 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:54:04,367 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:04,367 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:04,367 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:54:04,369 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:54:04,369 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:04,369 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:54:04,370 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:54:04,370 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:54:04,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 00:54:04,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 00:54:04,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:04,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:54:04,372 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 00:54:04,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:54:04,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:54:04,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:04,374 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 00:54:04,374 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 00:54:04,374 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 00:54:04,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:04,376 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:04,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:54:04,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:04,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:04,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:04,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:04,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:04,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:04,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:54:04,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:54:04,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:04,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:04,380 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_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2021-11-07 00:54:04,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:04,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:04,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:04,676 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:04,677 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:04,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2021-11-07 00:54:04,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data/ee0315eda/7d98bf3bb3514d01bb9c4def6576fcb7/FLAGe695dfd30 [2021-11-07 00:54:05,388 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:05,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2021-11-07 00:54:05,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data/ee0315eda/7d98bf3bb3514d01bb9c4def6576fcb7/FLAGe695dfd30 [2021-11-07 00:54:05,609 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data/ee0315eda/7d98bf3bb3514d01bb9c4def6576fcb7 [2021-11-07 00:54:05,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:05,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:05,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:05,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:05,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:05,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:05" (1/1) ... [2021-11-07 00:54:05,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185b17c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:05, skipping insertion in model container [2021-11-07 00:54:05,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:05" (1/1) ... [2021-11-07 00:54:05,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:05,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:06,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:06,309 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CTranslationUtil.getConstantFirstDimensionOfArray(CTranslationUtil.java:210) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.constructIndexToInitInfo(InitializationHandler.java:1272) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.constructInitializerInfo(InitializationHandler.java:1228) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.initialize(InitializationHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.InitializationHandler.initialize(InitializationHandler.java:207) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.PostProcessor.createUltimateInitProcedure(PostProcessor.java:790) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.PostProcessor.postProcess(PostProcessor.java:208) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:621) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 00:54:06,322 INFO L168 Benchmark]: Toolchain (without parser) took 702.50 ms. Allocated memory is still 111.1 MB. Free memory was 65.7 MB in the beginning and 82.1 MB in the end (delta: -16.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:06,323 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 111.1 MB. Free memory is still 84.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:06,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.12 ms. Allocated memory is still 111.1 MB. Free memory was 65.5 MB in the beginning and 82.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:06,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 111.1 MB. Free memory is still 84.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 692.12 ms. Allocated memory is still 111.1 MB. Free memory was 65.5 MB in the beginning and 82.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: This array type is incomplete! Cannot extract actual dimensions.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CTranslationUtil.getConstantFirstDimensionOfArray(CTranslationUtil.java:210) 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_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/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_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/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_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:08,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:08,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:08,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:08,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:08,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:08,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:08,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:08,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:08,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:08,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:08,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:08,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:08,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:08,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:08,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:08,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:08,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:08,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:08,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:08,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:08,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:08,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:08,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:08,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:08,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:08,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:08,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:08,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:08,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:08,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:08,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:08,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:08,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:08,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:08,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:08,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:08,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:08,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:08,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:08,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:08,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 00:54:08,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:08,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:08,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:08,942 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:08,942 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:08,942 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:08,942 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:08,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:08,943 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:08,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 00:54:08,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 00:54:08,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:08,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:54:08,946 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 00:54:08,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:54:08,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:54:08,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:08,947 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 00:54:08,947 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 00:54:08,947 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 00:54:08,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:08,948 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:08,948 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:54:08,948 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:54:08,949 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:54:08,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:08,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:08,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:54:08,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:08,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:08,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:08,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:08,951 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:54:08,951 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:08,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:08,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:08,952 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_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2021-11-07 00:54:09,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:09,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:09,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:09,417 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:09,418 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:09,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2021-11-07 00:54:09,491 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data/4287614fc/d3c07887570b48f9a04f06fef42d4599/FLAG8acbbb6b5 [2021-11-07 00:54:10,200 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:10,202 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2021-11-07 00:54:10,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data/4287614fc/d3c07887570b48f9a04f06fef42d4599/FLAG8acbbb6b5 [2021-11-07 00:54:10,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/data/4287614fc/d3c07887570b48f9a04f06fef42d4599 [2021-11-07 00:54:10,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:10,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:10,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:10,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:10,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:10,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:10" (1/1) ... [2021-11-07 00:54:10,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d951b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:10, skipping insertion in model container [2021-11-07 00:54:10,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:10" (1/1) ... [2021-11-07 00:54:10,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:10,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:11,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:11,290 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:54:11,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:11,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:11,417 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:11,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:11,526 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:11,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11 WrapperNode [2021-11-07 00:54:11,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:11,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:11,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:11,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:11,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:11,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:11,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:11,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:11,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:11,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:11,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:11,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:11,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (1/1) ... [2021-11-07 00:54:11,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:11,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:11,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:11,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:54:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:54:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:54:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:54:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:54:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:54:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:54:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:11,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:12,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:12,956 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-07 00:54:12,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:12 BoogieIcfgContainer [2021-11-07 00:54:12,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:12,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:12,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:12,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:12,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:10" (1/3) ... [2021-11-07 00:54:12,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a9d68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:12, skipping insertion in model container [2021-11-07 00:54:12,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:11" (2/3) ... [2021-11-07 00:54:12,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a9d68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:12, skipping insertion in model container [2021-11-07 00:54:12,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:12" (3/3) ... [2021-11-07 00:54:12,968 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_2.i [2021-11-07 00:54:12,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:12,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 96 error locations. [2021-11-07 00:54:13,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:13,032 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 00:54:13,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2021-11-07 00:54:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 116 states have (on average 1.9655172413793103) internal successors, (228), 212 states have internal predecessors, (228), 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 00:54:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:54:13,060 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:13,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:54:13,061 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash 889508777, now seen corresponding path program 1 times [2021-11-07 00:54:13,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:13,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823628022] [2021-11-07 00:54:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:13,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:13,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:13,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:13,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:54:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:13,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:54:13,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:13,281 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 00:54:13,341 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 00:54:13,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:13,413 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 00:54:13,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:13,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823628022] [2021-11-07 00:54:13,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823628022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:13,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:13,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:54:13,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917765571] [2021-11-07 00:54:13,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:54:13,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:13,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:54:13,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:54:13,452 INFO L87 Difference]: Start difference. First operand has 213 states, 116 states have (on average 1.9655172413793103) internal successors, (228), 212 states have internal predecessors, (228), 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 00:54:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:14,652 INFO L93 Difference]: Finished difference Result 430 states and 453 transitions. [2021-11-07 00:54:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:54:14,654 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 6 [2021-11-07 00:54:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:14,680 INFO L225 Difference]: With dead ends: 430 [2021-11-07 00:54:14,681 INFO L226 Difference]: Without dead ends: 426 [2021-11-07 00:54:14,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 3 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 00:54:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-11-07 00:54:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 213. [2021-11-07 00:54:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 118 states have (on average 1.923728813559322) internal successors, (227), 212 states have internal predecessors, (227), 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 00:54:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 227 transitions. [2021-11-07 00:54:14,765 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 227 transitions. Word has length 6 [2021-11-07 00:54:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:14,766 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 227 transitions. [2021-11-07 00:54:14,766 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 00:54:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 227 transitions. [2021-11-07 00:54:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:54:14,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:14,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:54:14,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:14,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:14,981 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 889508778, now seen corresponding path program 1 times [2021-11-07 00:54:14,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:14,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392867879] [2021-11-07 00:54:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:14,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:14,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:14,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:14,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:54:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:15,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 00:54:15,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:15,095 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 00:54:15,212 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 00:54:15,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:15,487 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 00:54:15,487 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:15,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392867879] [2021-11-07 00:54:15,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392867879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:15,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:15,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 00:54:15,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594365880] [2021-11-07 00:54:15,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:54:15,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:54:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:54:15,491 INFO L87 Difference]: Start difference. First operand 213 states and 227 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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 00:54:18,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:18,359 INFO L93 Difference]: Finished difference Result 441 states and 464 transitions. [2021-11-07 00:54:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:54:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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 6 [2021-11-07 00:54:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:18,363 INFO L225 Difference]: With dead ends: 441 [2021-11-07 00:54:18,363 INFO L226 Difference]: Without dead ends: 441 [2021-11-07 00:54:18,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-07 00:54:18,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-07 00:54:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 214. [2021-11-07 00:54:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 119 states have (on average 1.9075630252100841) internal successors, (227), 213 states have internal predecessors, (227), 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 00:54:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 227 transitions. [2021-11-07 00:54:18,379 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 227 transitions. Word has length 6 [2021-11-07 00:54:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:18,379 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 227 transitions. [2021-11-07 00:54:18,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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 00:54:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 227 transitions. [2021-11-07 00:54:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:54:18,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:18,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:54:18,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:18,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:18,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:18,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash 889568359, now seen corresponding path program 1 times [2021-11-07 00:54:18,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:18,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911760206] [2021-11-07 00:54:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:18,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:18,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:18,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:18,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:54:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:18,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:54:18,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:18,754 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 00:54:18,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:18,787 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 00:54:18,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:18,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911760206] [2021-11-07 00:54:18,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911760206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:18,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:18,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:54:18,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352751388] [2021-11-07 00:54:18,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:18,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:18,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:18,797 INFO L87 Difference]: Start difference. First operand 214 states and 227 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 00:54:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:18,845 INFO L93 Difference]: Finished difference Result 313 states and 327 transitions. [2021-11-07 00:54:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 6 [2021-11-07 00:54:18,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:18,848 INFO L225 Difference]: With dead ends: 313 [2021-11-07 00:54:18,848 INFO L226 Difference]: Without dead ends: 313 [2021-11-07 00:54:18,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:54:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-07 00:54:18,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 209. [2021-11-07 00:54:18,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 117 states have (on average 1.8888888888888888) internal successors, (221), 208 states have internal predecessors, (221), 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 00:54:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 221 transitions. [2021-11-07 00:54:18,861 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 221 transitions. Word has length 6 [2021-11-07 00:54:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:18,861 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 221 transitions. [2021-11-07 00:54:18,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 00:54:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 221 transitions. [2021-11-07 00:54:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:54:18,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:18,863 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:18,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:19,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:19,074 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:19,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash 119603274, now seen corresponding path program 1 times [2021-11-07 00:54:19,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:19,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852887819] [2021-11-07 00:54:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:19,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:19,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:19,077 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:19,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:54:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:19,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:19,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:19,206 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 00:54:19,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:19,237 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 00:54:19,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:19,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852887819] [2021-11-07 00:54:19,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852887819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:19,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:19,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:54:19,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451790339] [2021-11-07 00:54:19,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:19,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:19,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:19,240 INFO L87 Difference]: Start difference. First operand 209 states and 221 transitions. Second operand has 4 states, 4 states have (on average 2.0) 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 00:54:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:19,284 INFO L93 Difference]: Finished difference Result 261 states and 273 transitions. [2021-11-07 00:54:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:19,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 8 [2021-11-07 00:54:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:19,287 INFO L225 Difference]: With dead ends: 261 [2021-11-07 00:54:19,287 INFO L226 Difference]: Without dead ends: 261 [2021-11-07 00:54:19,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:54:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-07 00:54:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 209. [2021-11-07 00:54:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 117 states have (on average 1.8803418803418803) internal successors, (220), 208 states have internal predecessors, (220), 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 00:54:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 220 transitions. [2021-11-07 00:54:19,296 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 220 transitions. Word has length 8 [2021-11-07 00:54:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:19,296 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 220 transitions. [2021-11-07 00:54:19,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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 00:54:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 220 transitions. [2021-11-07 00:54:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:54:19,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:19,297 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:19,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:19,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:19,508 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash 119442413, now seen corresponding path program 1 times [2021-11-07 00:54:19,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:19,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486219651] [2021-11-07 00:54:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:19,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:19,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:19,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:19,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:54:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:19,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:54:19,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:19,668 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 00:54:19,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-11-07 00:54:19,774 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 00:54:19,774 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 22 treesize of output 29 [2021-11-07 00:54:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:20,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:24,191 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 00:54:24,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:24,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486219651] [2021-11-07 00:54:24,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486219651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:24,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:24,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 00:54:24,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418616546] [2021-11-07 00:54:24,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:54:24,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:54:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=25, Unknown=2, NotChecked=0, Total=42 [2021-11-07 00:54:24,193 INFO L87 Difference]: Start difference. First operand 209 states and 220 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 00:54:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:24,996 INFO L93 Difference]: Finished difference Result 283 states and 296 transitions. [2021-11-07 00:54:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:24,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 8 [2021-11-07 00:54:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:24,999 INFO L225 Difference]: With dead ends: 283 [2021-11-07 00:54:24,999 INFO L226 Difference]: Without dead ends: 283 [2021-11-07 00:54:24,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2021-11-07 00:54:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-07 00:54:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 208. [2021-11-07 00:54:25,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 117 states have (on average 1.8717948717948718) internal successors, (219), 207 states have internal predecessors, (219), 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 00:54:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 219 transitions. [2021-11-07 00:54:25,007 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 219 transitions. Word has length 8 [2021-11-07 00:54:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:25,007 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 219 transitions. [2021-11-07 00:54:25,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 00:54:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 219 transitions. [2021-11-07 00:54:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:54:25,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:25,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:25,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:25,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:25,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:25,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash 119442414, now seen corresponding path program 1 times [2021-11-07 00:54:25,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:25,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156093835] [2021-11-07 00:54:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:25,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:25,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:25,223 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:25,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:54:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:25,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:54:25,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:25,416 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 00:54:25,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-11-07 00:54:25,454 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 00:54:25,455 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-07 00:54:25,799 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-07 00:54:25,800 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 3 case distinctions, treesize of input 54 treesize of output 59 [2021-11-07 00:54:25,864 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-11-07 00:54:25,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 70 [2021-11-07 00:54:26,028 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 00:54:26,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:28,519 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 00:54:28,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:28,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156093835] [2021-11-07 00:54:28,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156093835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:28,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:28,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-07 00:54:28,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700037580] [2021-11-07 00:54:28,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:54:28,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:54:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-11-07 00:54:28,522 INFO L87 Difference]: Start difference. First operand 208 states and 219 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 00:54:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:30,053 INFO L93 Difference]: Finished difference Result 282 states and 295 transitions. [2021-11-07 00:54:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 8 [2021-11-07 00:54:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:30,057 INFO L225 Difference]: With dead ends: 282 [2021-11-07 00:54:30,057 INFO L226 Difference]: Without dead ends: 282 [2021-11-07 00:54:30,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=26, Invalid=45, Unknown=1, NotChecked=0, Total=72 [2021-11-07 00:54:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-07 00:54:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 207. [2021-11-07 00:54:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 117 states have (on average 1.8632478632478633) internal successors, (218), 206 states have internal predecessors, (218), 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 00:54:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 218 transitions. [2021-11-07 00:54:30,065 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 218 transitions. Word has length 8 [2021-11-07 00:54:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:30,065 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 218 transitions. [2021-11-07 00:54:30,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 00:54:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 218 transitions. [2021-11-07 00:54:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:54:30,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:30,067 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:30,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:30,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:30,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:30,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash 176861576, now seen corresponding path program 1 times [2021-11-07 00:54:30,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:30,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568085709] [2021-11-07 00:54:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:30,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:30,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:30,282 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:30,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:54:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:30,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:54:30,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:30,491 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 00:54:30,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:30,562 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 00:54:30,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:30,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568085709] [2021-11-07 00:54:30,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568085709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:30,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:30,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 00:54:30,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284846048] [2021-11-07 00:54:30,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:54:30,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:30,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:54:30,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:30,565 INFO L87 Difference]: Start difference. First operand 207 states and 218 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 00:54:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:30,676 INFO L93 Difference]: Finished difference Result 217 states and 225 transitions. [2021-11-07 00:54:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:54:30,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 8 [2021-11-07 00:54:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:30,680 INFO L225 Difference]: With dead ends: 217 [2021-11-07 00:54:30,681 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 00:54:30,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:54:30,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 00:54:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 209. [2021-11-07 00:54:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 119 states have (on average 1.8487394957983194) internal successors, (220), 208 states have internal predecessors, (220), 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 00:54:30,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 220 transitions. [2021-11-07 00:54:30,690 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 220 transitions. Word has length 8 [2021-11-07 00:54:30,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:30,690 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 220 transitions. [2021-11-07 00:54:30,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 00:54:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 220 transitions. [2021-11-07 00:54:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:54:30,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:30,692 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:30,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:30,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:30,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr95ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:30,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:30,907 INFO L85 PathProgramCache]: Analyzing trace with hash 176863657, now seen corresponding path program 1 times [2021-11-07 00:54:30,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:30,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004763773] [2021-11-07 00:54:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:30,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:30,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:30,908 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:30,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:54:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:31,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:54:31,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:31,037 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 00:54:31,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:31,061 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 00:54:31,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:31,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004763773] [2021-11-07 00:54:31,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004763773] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:31,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:31,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:54:31,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005716416] [2021-11-07 00:54:31,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:54:31,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:31,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:54:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:31,064 INFO L87 Difference]: Start difference. First operand 209 states and 220 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 00:54:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:31,362 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2021-11-07 00:54:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:54:31,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 8 [2021-11-07 00:54:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:31,364 INFO L225 Difference]: With dead ends: 212 [2021-11-07 00:54:31,365 INFO L226 Difference]: Without dead ends: 207 [2021-11-07 00:54:31,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 00:54:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-07 00:54:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-11-07 00:54:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 117 states have (on average 1.8547008547008548) internal successors, (217), 206 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:31,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 217 transitions. [2021-11-07 00:54:31,371 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 217 transitions. Word has length 8 [2021-11-07 00:54:31,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:31,372 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 217 transitions. [2021-11-07 00:54:31,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 00:54:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 217 transitions. [2021-11-07 00:54:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 00:54:31,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:31,374 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:31,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:31,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:31,585 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:31,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:31,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2124084655, now seen corresponding path program 1 times [2021-11-07 00:54:31,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:31,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531926468] [2021-11-07 00:54:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:31,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:31,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:31,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:54:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:31,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:54:31,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:31,782 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-11-07 00:54:31,782 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 1 case distinctions, treesize of input 9 treesize of output 13 [2021-11-07 00:54:31,833 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 00:54:31,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:31,894 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 00:54:31,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:31,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531926468] [2021-11-07 00:54:31,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531926468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:31,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:31,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:54:31,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834156172] [2021-11-07 00:54:31,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:54:31,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:54:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:54:31,899 INFO L87 Difference]: Start difference. First operand 207 states and 217 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 00:54:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:32,472 INFO L93 Difference]: Finished difference Result 231 states and 242 transitions. [2021-11-07 00:54:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:54:32,473 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 00:54:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:32,474 INFO L225 Difference]: With dead ends: 231 [2021-11-07 00:54:32,474 INFO L226 Difference]: Without dead ends: 231 [2021-11-07 00:54:32,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:32,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-07 00:54:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 209. [2021-11-07 00:54:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 122 states have (on average 1.819672131147541) internal successors, (222), 208 states have internal predecessors, (222), 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 00:54:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 222 transitions. [2021-11-07 00:54:32,481 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 222 transitions. Word has length 13 [2021-11-07 00:54:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:32,481 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 222 transitions. [2021-11-07 00:54:32,481 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 00:54:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 222 transitions. [2021-11-07 00:54:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 00:54:32,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:32,482 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:32,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:32,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:32,692 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2124084654, now seen corresponding path program 1 times [2021-11-07 00:54:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:32,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144383789] [2021-11-07 00:54:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:32,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:32,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:32,694 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:32,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 00:54:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:32,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:54:32,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:32,863 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-07 00:54:32,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-07 00:54:32,939 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 00:54:32,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:33,151 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 00:54:33,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:33,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144383789] [2021-11-07 00:54:33,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144383789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:33,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:33,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 00:54:33,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409111151] [2021-11-07 00:54:33,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:54:33,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:54:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:33,153 INFO L87 Difference]: Start difference. First operand 209 states and 222 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 00:54:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:33,696 INFO L93 Difference]: Finished difference Result 205 states and 217 transitions. [2021-11-07 00:54:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:54:33,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 00:54:33,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:33,698 INFO L225 Difference]: With dead ends: 205 [2021-11-07 00:54:33,698 INFO L226 Difference]: Without dead ends: 205 [2021-11-07 00:54:33,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:54:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-07 00:54:33,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-11-07 00:54:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 122 states have (on average 1.778688524590164) internal successors, (217), 204 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 217 transitions. [2021-11-07 00:54:33,704 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 217 transitions. Word has length 13 [2021-11-07 00:54:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:33,704 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 217 transitions. [2021-11-07 00:54:33,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 00:54:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 217 transitions. [2021-11-07 00:54:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 00:54:33,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:33,705 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:33,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:33,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:33,916 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:33,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1135760494, now seen corresponding path program 1 times [2021-11-07 00:54:33,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:33,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850657435] [2021-11-07 00:54:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:33,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:33,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:33,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:33,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:54:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:34,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:54:34,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:34,114 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 00:54:34,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:34,150 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 00:54:34,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:34,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850657435] [2021-11-07 00:54:34,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850657435] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:34,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:34,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:54:34,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369161891] [2021-11-07 00:54:34,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:54:34,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:54:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:54:34,153 INFO L87 Difference]: Start difference. First operand 205 states and 217 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 00:54:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:34,246 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2021-11-07 00:54:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:54:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-11-07 00:54:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:34,249 INFO L225 Difference]: With dead ends: 205 [2021-11-07 00:54:34,249 INFO L226 Difference]: Without dead ends: 205 [2021-11-07 00:54:34,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-07 00:54:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-11-07 00:54:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 122 states have (on average 1.7704918032786885) internal successors, (216), 204 states have internal predecessors, (216), 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 00:54:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 216 transitions. [2021-11-07 00:54:34,254 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 216 transitions. Word has length 15 [2021-11-07 00:54:34,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:34,254 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 216 transitions. [2021-11-07 00:54:34,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 00:54:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 216 transitions. [2021-11-07 00:54:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 00:54:34,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:34,256 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:34,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:34,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:34,456 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:34,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2116860357, now seen corresponding path program 1 times [2021-11-07 00:54:34,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:34,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200470704] [2021-11-07 00:54:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:34,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:34,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:34,458 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:34,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 00:54:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:34,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:54:34,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:34,723 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-11-07 00:54:34,724 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 21 treesize of output 22 [2021-11-07 00:54:35,027 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 00:54:35,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:35,127 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 00:54:35,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:35,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200470704] [2021-11-07 00:54:35,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200470704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:35,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:35,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 00:54:35,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522666035] [2021-11-07 00:54:35,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:54:35,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:35,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:54:35,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:35,130 INFO L87 Difference]: Start difference. First operand 205 states and 216 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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 00:54:35,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:35,887 INFO L93 Difference]: Finished difference Result 222 states and 232 transitions. [2021-11-07 00:54:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:35,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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 21 [2021-11-07 00:54:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:35,889 INFO L225 Difference]: With dead ends: 222 [2021-11-07 00:54:35,889 INFO L226 Difference]: Without dead ends: 222 [2021-11-07 00:54:35,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:54:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-07 00:54:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 200. [2021-11-07 00:54:35,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 122 states have (on average 1.7295081967213115) internal successors, (211), 199 states have internal predecessors, (211), 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 00:54:35,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 211 transitions. [2021-11-07 00:54:35,896 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 211 transitions. Word has length 21 [2021-11-07 00:54:35,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:35,896 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 211 transitions. [2021-11-07 00:54:35,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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 00:54:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 211 transitions. [2021-11-07 00:54:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 00:54:35,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:35,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:35,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:36,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:36,112 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2116860356, now seen corresponding path program 1 times [2021-11-07 00:54:36,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:36,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451669760] [2021-11-07 00:54:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:36,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:36,115 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:36,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:54:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:36,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:54:36,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:36,441 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 00:54:36,441 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 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-07 00:54:36,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 [2021-11-07 00:54:36,594 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 00:54:36,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:36,933 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 00:54:36,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:36,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451669760] [2021-11-07 00:54:36,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451669760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:36,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:36,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 00:54:36,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836439792] [2021-11-07 00:54:36,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:54:36,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:54:36,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:36,936 INFO L87 Difference]: Start difference. First operand 200 states and 211 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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 00:54:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:39,003 INFO L93 Difference]: Finished difference Result 595 states and 630 transitions. [2021-11-07 00:54:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:54:39,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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 21 [2021-11-07 00:54:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:39,008 INFO L225 Difference]: With dead ends: 595 [2021-11-07 00:54:39,008 INFO L226 Difference]: Without dead ends: 595 [2021-11-07 00:54:39,008 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-11-07 00:54:39,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 255. [2021-11-07 00:54:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 177 states have (on average 1.694915254237288) internal successors, (300), 254 states have internal predecessors, (300), 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 00:54:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 300 transitions. [2021-11-07 00:54:39,019 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 300 transitions. Word has length 21 [2021-11-07 00:54:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:39,020 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 300 transitions. [2021-11-07 00:54:39,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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 00:54:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 300 transitions. [2021-11-07 00:54:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 00:54:39,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:39,021 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:39,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:39,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:39,234 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash -383407928, now seen corresponding path program 1 times [2021-11-07 00:54:39,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:39,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712019515] [2021-11-07 00:54:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:39,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:39,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:39,237 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:39,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 00:54:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:39,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:39,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:39,546 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 00:54:39,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:39,600 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 00:54:39,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:39,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712019515] [2021-11-07 00:54:39,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712019515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:39,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:39,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:54:39,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188530303] [2021-11-07 00:54:39,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:39,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:39,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:39,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:39,602 INFO L87 Difference]: Start difference. First operand 255 states and 300 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 00:54:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:39,636 INFO L93 Difference]: Finished difference Result 327 states and 374 transitions. [2021-11-07 00:54:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:39,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2021-11-07 00:54:39,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:39,638 INFO L225 Difference]: With dead ends: 327 [2021-11-07 00:54:39,639 INFO L226 Difference]: Without dead ends: 327 [2021-11-07 00:54:39,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:54:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-07 00:54:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 257. [2021-11-07 00:54:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 179 states have (on average 1.687150837988827) internal successors, (302), 256 states have internal predecessors, (302), 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 00:54:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 302 transitions. [2021-11-07 00:54:39,646 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 302 transitions. Word has length 24 [2021-11-07 00:54:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:39,646 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 302 transitions. [2021-11-07 00:54:39,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 00:54:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 302 transitions. [2021-11-07 00:54:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 00:54:39,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:39,647 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:39,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:39,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:39,864 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash -383407420, now seen corresponding path program 1 times [2021-11-07 00:54:39,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:39,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024249373] [2021-11-07 00:54:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:39,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:39,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:39,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:39,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 00:54:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:40,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:54:40,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:40,677 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 00:54:40,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:40,825 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 00:54:40,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:40,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024249373] [2021-11-07 00:54:40,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024249373] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:40,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:40,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-07 00:54:40,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222310570] [2021-11-07 00:54:40,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:54:40,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:40,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:54:40,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:54:40,828 INFO L87 Difference]: Start difference. First operand 257 states and 302 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 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 00:54:41,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:41,148 INFO L93 Difference]: Finished difference Result 255 states and 299 transitions. [2021-11-07 00:54:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:54:41,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 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 24 [2021-11-07 00:54:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:41,150 INFO L225 Difference]: With dead ends: 255 [2021-11-07 00:54:41,151 INFO L226 Difference]: Without dead ends: 255 [2021-11-07 00:54:41,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-07 00:54:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-07 00:54:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-07 00:54:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 179 states have (on average 1.670391061452514) internal successors, (299), 254 states have internal predecessors, (299), 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 00:54:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 299 transitions. [2021-11-07 00:54:41,158 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 299 transitions. Word has length 24 [2021-11-07 00:54:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:41,159 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 299 transitions. [2021-11-07 00:54:41,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 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 00:54:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 299 transitions. [2021-11-07 00:54:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 00:54:41,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:41,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:41,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:41,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:41,374 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash 895862214, now seen corresponding path program 1 times [2021-11-07 00:54:41,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:41,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838434417] [2021-11-07 00:54:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:41,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:41,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:41,376 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:41,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 00:54:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:41,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:54:41,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:41,668 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 00:54:41,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:41,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:41,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838434417] [2021-11-07 00:54:41,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838434417] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:41,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:41,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:54:41,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787208462] [2021-11-07 00:54:41,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:54:41,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:54:41,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:54:41,762 INFO L87 Difference]: Start difference. First operand 255 states and 299 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 00:54:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:41,815 INFO L93 Difference]: Finished difference Result 311 states and 355 transitions. [2021-11-07 00:54:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 28 [2021-11-07 00:54:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:41,818 INFO L225 Difference]: With dead ends: 311 [2021-11-07 00:54:41,818 INFO L226 Difference]: Without dead ends: 311 [2021-11-07 00:54:41,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-07 00:54:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 257. [2021-11-07 00:54:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 181 states have (on average 1.6629834254143647) internal successors, (301), 256 states have internal predecessors, (301), 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 00:54:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 301 transitions. [2021-11-07 00:54:41,827 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 301 transitions. Word has length 28 [2021-11-07 00:54:41,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:41,828 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 301 transitions. [2021-11-07 00:54:41,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 00:54:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 301 transitions. [2021-11-07 00:54:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 00:54:41,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:41,834 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:41,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:42,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:42,048 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:54:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1930202445, now seen corresponding path program 1 times [2021-11-07 00:54:42,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:42,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917756924] [2021-11-07 00:54:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:42,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:42,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:42,051 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:42,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 00:54:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:42,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 00:54:42,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:42,502 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 00:54:42,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,748 INFO L354 Elim1Store]: treesize reduction 27, result has 42.6 percent of original size [2021-11-07 00:54:42,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 36 [2021-11-07 00:54:43,828 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-07 00:54:43,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 61 [2021-11-07 00:54:44,187 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 00:54:44,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:51,306 INFO L354 Elim1Store]: treesize reduction -1, result has 104.0 percent of original size [2021-11-07 00:54:51,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 223 treesize of output 236 [2021-11-07 00:54:54,016 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 00:54:54,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:54,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917756924] [2021-11-07 00:54:54,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917756924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:54,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:54,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 20 [2021-11-07 00:54:54,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50905679] [2021-11-07 00:54:54,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 00:54:54,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 00:54:54,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=363, Unknown=4, NotChecked=0, Total=462 [2021-11-07 00:54:54,019 INFO L87 Difference]: Start difference. First operand 257 states and 301 transitions. Second operand has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 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 00:55:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:08,388 INFO L93 Difference]: Finished difference Result 358 states and 405 transitions. [2021-11-07 00:55:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 00:55:08,389 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 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 30 [2021-11-07 00:55:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:08,392 INFO L225 Difference]: With dead ends: 358 [2021-11-07 00:55:08,392 INFO L226 Difference]: Without dead ends: 358 [2021-11-07 00:55:08,393 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=233, Invalid=693, Unknown=4, NotChecked=0, Total=930 [2021-11-07 00:55:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-07 00:55:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 265. [2021-11-07 00:55:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 189 states have (on average 1.6613756613756614) internal successors, (314), 264 states have internal predecessors, (314), 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 00:55:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 314 transitions. [2021-11-07 00:55:08,402 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 314 transitions. Word has length 30 [2021-11-07 00:55:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:08,402 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 314 transitions. [2021-11-07 00:55:08,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 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 00:55:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 314 transitions. [2021-11-07 00:55:08,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 00:55:08,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:08,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:08,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:08,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:08,631 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:55:08,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:08,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1930202446, now seen corresponding path program 1 times [2021-11-07 00:55:08,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:08,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504429168] [2021-11-07 00:55:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:08,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:08,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:08,633 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:08,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 00:55:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:08,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 00:55:08,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:09,072 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-07 00:55:09,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-11-07 00:55:09,094 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 00:55:09,095 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-07 00:55:09,363 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-07 00:55:09,364 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 3 case distinctions, treesize of input 55 treesize of output 60 [2021-11-07 00:55:09,432 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-11-07 00:55:09,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 71 [2021-11-07 00:55:10,340 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-07 00:55:10,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 37 [2021-11-07 00:55:10,357 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 00:55:10,358 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 34 treesize of output 34 [2021-11-07 00:55:12,657 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 00:55:12,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:15,178 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 00:55:15,179 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 37 treesize of output 36 [2021-11-07 00:55:17,270 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_hid_open_report_~#item~0.base_26| (_ BitVec 32))) (or (and (bvule |c_~#dev~0.offset| (bvadd (_ bv4 32) |c_~#dev~0.offset|)) (forall ((|v_ULTIMATE.start_ldv_zalloc_#t~malloc13.base_14| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |c_~#dev~0.offset|) (select (store (store |c_#length| |v_ULTIMATE.start_hid_open_report_~#item~0.base_26| (_ bv16 32)) |v_ULTIMATE.start_ldv_zalloc_#t~malloc13.base_14| (_ bv8 32)) |c_~#dev~0.base|)))) (= c_ULTIMATE.start_probe_23_~dev.base |v_ULTIMATE.start_hid_open_report_~#item~0.base_26|))) is different from false [2021-11-07 00:55:30,245 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 00:55:30,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:30,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504429168] [2021-11-07 00:55:30,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504429168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:30,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:30,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 14 [2021-11-07 00:55:30,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712748776] [2021-11-07 00:55:30,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 00:55:30,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 00:55:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=153, Unknown=5, NotChecked=26, Total=240 [2021-11-07 00:55:30,247 INFO L87 Difference]: Start difference. First operand 265 states and 314 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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 00:55:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:32,825 INFO L93 Difference]: Finished difference Result 285 states and 331 transitions. [2021-11-07 00:55:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:55:32,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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 30 [2021-11-07 00:55:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:32,829 INFO L225 Difference]: With dead ends: 285 [2021-11-07 00:55:32,829 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 00:55:32,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=127, Invalid=292, Unknown=5, NotChecked=38, Total=462 [2021-11-07 00:55:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 00:55:32,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 263. [2021-11-07 00:55:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 189 states have (on average 1.6402116402116402) internal successors, (310), 262 states have internal predecessors, (310), 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 00:55:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 310 transitions. [2021-11-07 00:55:32,837 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 310 transitions. Word has length 30 [2021-11-07 00:55:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:32,837 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 310 transitions. [2021-11-07 00:55:32,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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 00:55:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 310 transitions. [2021-11-07 00:55:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 00:55:32,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:32,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:32,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 00:55:33,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:33,076 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr95ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:55:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1930204526, now seen corresponding path program 1 times [2021-11-07 00:55:33,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:33,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155976514] [2021-11-07 00:55:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:33,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:33,078 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:33,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 00:55:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:33,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:55:33,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:33,565 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 00:55:33,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:33,624 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 00:55:33,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:33,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155976514] [2021-11-07 00:55:33,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155976514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:33,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:33,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:55:33,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270732563] [2021-11-07 00:55:33,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:33,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:33,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:33,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:33,626 INFO L87 Difference]: Start difference. First operand 263 states and 310 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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 00:55:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:33,654 INFO L93 Difference]: Finished difference Result 265 states and 309 transitions. [2021-11-07 00:55:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:33,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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 30 [2021-11-07 00:55:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:33,656 INFO L225 Difference]: With dead ends: 265 [2021-11-07 00:55:33,656 INFO L226 Difference]: Without dead ends: 265 [2021-11-07 00:55:33,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:55:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-07 00:55:33,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2021-11-07 00:55:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 189 states have (on average 1.6296296296296295) internal successors, (308), 262 states have internal predecessors, (308), 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 00:55:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 308 transitions. [2021-11-07 00:55:33,663 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 308 transitions. Word has length 30 [2021-11-07 00:55:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:33,664 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 308 transitions. [2021-11-07 00:55:33,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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 00:55:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 308 transitions. [2021-11-07 00:55:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 00:55:33,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:33,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:33,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:33,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:33,879 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 92 more)] === [2021-11-07 00:55:33,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1455248043, now seen corresponding path program 1 times [2021-11-07 00:55:33,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:33,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126639391] [2021-11-07 00:55:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:33,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:33,882 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:33,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d5009a4-ec2b-470e-8b9c-b8df68d50c5d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 00:55:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:34,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:55:34,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:34,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:55:34,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:55:34,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:55:34,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-11-07 00:55:34,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:34,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2021-11-07 00:55:38,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:38,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:55:39,091 INFO L244 Elim1Store]: Index analysis took 145 ms [2021-11-07 00:55:39,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 143 [2021-11-07 00:55:49,157 INFO L354 Elim1Store]: treesize reduction 2685, result has 4.9 percent of original size [2021-11-07 00:55:49,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 81 case distinctions, treesize of input 151 treesize of output 195 [2021-11-07 00:56:01,402 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 93 [2021-11-07 00:56:01,907 INFO L354 Elim1Store]: treesize reduction 1410, result has 0.1 percent of original size [2021-11-07 00:56:01,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 190 treesize of output 74 [2021-11-07 00:56:01,941 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 00:56:01,941 INFO L328 TraceCheckSpWp]: Computing backward predicates...