./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs --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 efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:51:03,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:51:03,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:51:03,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:51:03,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:51:03,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:51:03,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:51:03,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:51:03,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:51:03,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:51:03,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:51:03,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:51:03,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:51:03,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:51:03,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:51:03,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:51:03,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:51:03,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:51:03,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:51:03,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:51:03,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:51:03,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:51:03,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:51:03,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:51:03,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:51:03,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:51:03,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:51:03,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:51:03,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:51:03,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:51:03,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:51:03,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:51:03,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:51:03,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:51:03,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:51:03,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:51:03,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:51:03,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:51:03,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:51:03,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:51:03,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:51:03,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 14:51:03,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:51:03,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:51:03,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:51:03,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:51:03,364 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:51:03,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:51:03,365 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:51:03,365 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:51:03,365 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:51:03,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:51:03,367 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:51:03,367 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:51:03,367 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:51:03,368 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:51:03,368 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:51:03,368 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:51:03,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:51:03,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:51:03,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:51:03,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:51:03,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:51:03,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:51:03,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:51:03,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:51:03,371 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:51:03,371 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:51:03,373 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:51:03,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:51:03,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:51:03,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:51:03,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:51:03,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:51:03,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:51:03,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:51:03,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:51:03,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:51:03,378 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:51:03,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:51:03,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:51:03,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:51:03,379 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_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 [2021-11-19 14:51:03,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:51:03,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:51:03,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:51:03,718 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:51:03,719 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:51:03,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2021-11-19 14:51:03,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data/9ecb337ff/35af86239cd14e4db3a4210f85d4025f/FLAGc8031e784 [2021-11-19 14:51:04,554 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:51:04,557 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2021-11-19 14:51:04,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data/9ecb337ff/35af86239cd14e4db3a4210f85d4025f/FLAGc8031e784 [2021-11-19 14:51:04,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data/9ecb337ff/35af86239cd14e4db3a4210f85d4025f [2021-11-19 14:51:04,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:51:04,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:51:04,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:51:04,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:51:04,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:51:04,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:04" (1/1) ... [2021-11-19 14:51:04,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c146d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:04, skipping insertion in model container [2021-11-19 14:51:04,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:04" (1/1) ... [2021-11-19 14:51:04,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:51:04,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:51:05,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i[33021,33034] [2021-11-19 14:51:05,796 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:51:05,808 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:51:05,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@666273ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:05, skipping insertion in model container [2021-11-19 14:51:05,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:51:05,810 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:51:05,812 INFO L158 Benchmark]: Toolchain (without parser) took 1093.92ms. Allocated memory is still 104.9MB. Free memory was 63.9MB in the beginning and 66.0MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:51:05,813 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory was 82.7MB in the beginning and 82.6MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:51:05,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1085.17ms. Allocated memory is still 104.9MB. Free memory was 63.8MB in the beginning and 66.2MB in the end (delta: -2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:51:05,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory was 82.7MB in the beginning and 82.6MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1085.17ms. Allocated memory is still 104.9MB. Free memory was 63.8MB in the beginning and 66.2MB in the end (delta: -2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs --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 efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:51:08,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:51:08,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:51:08,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:51:08,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:51:08,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:51:08,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:51:08,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:51:08,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:51:08,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:51:08,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:51:08,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:51:08,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:51:08,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:51:08,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:51:08,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:51:08,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:51:08,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:51:08,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:51:08,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:51:08,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:51:08,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:51:08,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:51:08,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:51:08,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:51:08,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:51:08,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:51:08,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:51:08,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:51:08,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:51:08,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:51:08,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:51:08,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:51:08,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:51:08,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:51:08,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:51:08,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:51:08,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:51:08,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:51:08,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:51:08,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:51:08,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 14:51:08,747 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:51:08,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:51:08,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:51:08,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:51:08,750 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:51:08,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:51:08,750 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:51:08,750 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:51:08,751 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:51:08,751 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:51:08,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 14:51:08,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 14:51:08,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:51:08,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:51:08,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:51:08,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:51:08,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:51:08,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:51:08,755 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 14:51:08,756 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 14:51:08,756 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 14:51:08,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:51:08,756 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:51:08,757 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:51:08,757 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:51:08,757 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:51:08,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:51:08,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:51:08,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:51:08,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:51:08,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:51:08,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:51:08,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:51:08,760 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:51:08,760 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:51:08,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:51:08,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:51:08,761 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_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 [2021-11-19 14:51:09,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:51:09,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:51:09,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:51:09,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:51:09,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:51:09,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2021-11-19 14:51:09,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data/c90ec3852/1ec8562da2e048c0b5a1f0a26d225e32/FLAG8860c1246 [2021-11-19 14:51:10,144 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:51:10,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2021-11-19 14:51:10,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data/c90ec3852/1ec8562da2e048c0b5a1f0a26d225e32/FLAG8860c1246 [2021-11-19 14:51:10,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/data/c90ec3852/1ec8562da2e048c0b5a1f0a26d225e32 [2021-11-19 14:51:10,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:51:10,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:51:10,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:51:10,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:51:10,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:51:10,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:10" (1/1) ... [2021-11-19 14:51:10,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3429c8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:10, skipping insertion in model container [2021-11-19 14:51:10,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:10" (1/1) ... [2021-11-19 14:51:10,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:51:10,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:51:11,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i[33021,33034] [2021-11-19 14:51:11,395 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:51:11,409 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:51:11,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:51:11,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i[33021,33034] [2021-11-19 14:51:11,618 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:51:11,624 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:51:11,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i[33021,33034] [2021-11-19 14:51:11,794 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:51:11,849 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:51:11,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11 WrapperNode [2021-11-19 14:51:11,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:51:11,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:51:11,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:51:11,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:51:11,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:11,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,047 INFO L137 Inliner]: procedures = 180, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1473 [2021-11-19 14:51:12,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:51:12,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:51:12,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:51:12,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:51:12,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:51:12,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:51:12,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:51:12,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:51:12,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (1/1) ... [2021-11-19 14:51:12,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:51:12,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:51:12,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:51:12,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:51:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:51:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:51:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:51:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:51:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:51:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:51:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:51:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:51:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:51:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:51:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:51:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:51:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:51:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:51:12,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:51:12,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:51:12,709 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:51:12,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:51:12,730 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 14:51:20,895 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:51:20,916 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:51:20,917 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-11-19 14:51:20,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:20 BoogieIcfgContainer [2021-11-19 14:51:20,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:51:20,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:51:20,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:51:20,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:51:20,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:51:10" (1/3) ... [2021-11-19 14:51:20,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0a156d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:51:20, skipping insertion in model container [2021-11-19 14:51:20,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:11" (2/3) ... [2021-11-19 14:51:20,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0a156d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:51:20, skipping insertion in model container [2021-11-19 14:51:20,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:20" (3/3) ... [2021-11-19 14:51:20,933 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-3.i [2021-11-19 14:51:20,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:51:20,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2021-11-19 14:51:21,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:51:21,033 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 [2021-11-19 14:51:21,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2021-11-19 14:51:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 1651 states, 787 states have (on average 2.283354510800508) internal successors, (1797), 1642 states have internal predecessors, (1797), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:51:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:51:21,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:21,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:51:21,109 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:51:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-19 14:51:21,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:21,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781170558] [2021-11-19 14:51:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:21,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:21,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:21,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:21,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:51:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:21,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:51:21,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:21,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:21,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:21,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781170558] [2021-11-19 14:51:21,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781170558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:21,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:21,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:51:21,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927249517] [2021-11-19 14:51:21,454 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:21,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:51:21,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:51:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:51:21,549 INFO L87 Difference]: Start difference. First operand has 1651 states, 787 states have (on average 2.283354510800508) internal successors, (1797), 1642 states have internal predecessors, (1797), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:21,679 INFO L93 Difference]: Finished difference Result 1633 states and 1726 transitions. [2021-11-19 14:51:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:51:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 14:51:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:21,739 INFO L225 Difference]: With dead ends: 1633 [2021-11-19 14:51:21,740 INFO L226 Difference]: Without dead ends: 1631 [2021-11-19 14:51:21,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:51:21,748 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:21,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:51:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-11-19 14:51:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-11-19 14:51:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 778 states have (on average 2.1748071979434447) internal successors, (1692), 1622 states have internal predecessors, (1692), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:51:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 1724 transitions. [2021-11-19 14:51:21,942 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 1724 transitions. Word has length 5 [2021-11-19 14:51:21,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:21,942 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 1724 transitions. [2021-11-19 14:51:21,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 1724 transitions. [2021-11-19 14:51:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:51:21,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:21,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:51:21,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:51:22,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:22,155 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:51:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:22,160 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-19 14:51:22,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:22,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971765740] [2021-11-19 14:51:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:22,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:22,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:22,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:22,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:51:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:22,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:51:22,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:22,421 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 [2021-11-19 14:51:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:22,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:22,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:22,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971765740] [2021-11-19 14:51:22,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971765740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:22,462 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:22,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:51:22,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63346939] [2021-11-19 14:51:22,463 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:22,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:51:22,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:22,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:51:22,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:22,466 INFO L87 Difference]: Start difference. First operand 1631 states and 1724 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:26,348 INFO L93 Difference]: Finished difference Result 1668 states and 1774 transitions. [2021-11-19 14:51:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:51:26,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 14:51:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:26,361 INFO L225 Difference]: With dead ends: 1668 [2021-11-19 14:51:26,361 INFO L226 Difference]: Without dead ends: 1668 [2021-11-19 14:51:26,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:51:26,364 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 1159 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:26,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 1291 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 14:51:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-11-19 14:51:26,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1614. [2021-11-19 14:51:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 854 states have (on average 2.030444964871194) internal successors, (1734), 1605 states have internal predecessors, (1734), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:51:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 1766 transitions. [2021-11-19 14:51:26,447 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 1766 transitions. Word has length 5 [2021-11-19 14:51:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:26,448 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 1766 transitions. [2021-11-19 14:51:26,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 1766 transitions. [2021-11-19 14:51:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 14:51:26,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:26,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 14:51:26,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:26,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:26,662 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:51:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-19 14:51:26,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:26,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058035340] [2021-11-19 14:51:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:26,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:26,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:26,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:26,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:51:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:26,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:51:26,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:26,876 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 [2021-11-19 14:51:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:26,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:27,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:27,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058035340] [2021-11-19 14:51:27,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058035340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:27,003 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:27,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:51:27,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327844665] [2021-11-19 14:51:27,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:27,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:27,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:27,005 INFO L87 Difference]: Start difference. First operand 1614 states and 1766 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:34,982 INFO L93 Difference]: Finished difference Result 1968 states and 2141 transitions. [2021-11-19 14:51:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:34,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-19 14:51:34,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:35,001 INFO L225 Difference]: With dead ends: 1968 [2021-11-19 14:51:35,002 INFO L226 Difference]: Without dead ends: 1968 [2021-11-19 14:51:35,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:35,004 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 1119 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:35,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 2002 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-19 14:51:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-11-19 14:51:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1770. [2021-11-19 14:51:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1020 states have (on average 2.0) internal successors, (2040), 1761 states have internal predecessors, (2040), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 14:51:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2072 transitions. [2021-11-19 14:51:35,065 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2072 transitions. Word has length 5 [2021-11-19 14:51:35,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:35,066 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 2072 transitions. [2021-11-19 14:51:35,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:35,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2072 transitions. [2021-11-19 14:51:35,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 14:51:35,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:35,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 14:51:35,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:35,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:35,281 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:51:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-19 14:51:35,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:35,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811834653] [2021-11-19 14:51:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:35,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:35,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:35,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:35,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:51:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:35,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:51:35,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:35,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:35,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:35,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811834653] [2021-11-19 14:51:35,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811834653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:35,470 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:35,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:51:35,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516255039] [2021-11-19 14:51:35,471 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:35,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:35,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:35,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:35,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:35,473 INFO L87 Difference]: Start difference. First operand 1770 states and 2072 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) [2021-11-19 14:51:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:35,665 INFO L93 Difference]: Finished difference Result 3115 states and 3680 transitions. [2021-11-19 14:51:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:35,666 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 6 [2021-11-19 14:51:35,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:35,687 INFO L225 Difference]: With dead ends: 3115 [2021-11-19 14:51:35,687 INFO L226 Difference]: Without dead ends: 3115 [2021-11-19 14:51:35,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:35,689 INFO L933 BasicCegarLoop]: 2068 mSDtfsCounter, 2984 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 3677 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:35,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2996 Valid, 3677 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:51:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2021-11-19 14:51:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 2586. [2021-11-19 14:51:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 1836 states have (on average 1.9803921568627452) internal successors, (3636), 2571 states have internal predecessors, (3636), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3680 transitions. [2021-11-19 14:51:35,801 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3680 transitions. Word has length 6 [2021-11-19 14:51:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:35,801 INFO L470 AbstractCegarLoop]: Abstraction has 2586 states and 3680 transitions. [2021-11-19 14:51:35,801 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) [2021-11-19 14:51:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3680 transitions. [2021-11-19 14:51:35,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:51:35,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:35,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:35,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:36,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:36,024 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:51:36,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-19 14:51:36,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:36,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170456098] [2021-11-19 14:51:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:36,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:36,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:36,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:36,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:51:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:36,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:51:36,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:36,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:36,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:36,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170456098] [2021-11-19 14:51:36,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170456098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:36,329 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:36,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:51:36,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428392331] [2021-11-19 14:51:36,331 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:36,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:36,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:36,332 INFO L87 Difference]: Start difference. First operand 2586 states and 3680 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-19 14:51:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:36,455 INFO L93 Difference]: Finished difference Result 2526 states and 3594 transitions. [2021-11-19 14:51:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:51:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 11 [2021-11-19 14:51:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:36,477 INFO L225 Difference]: With dead ends: 2526 [2021-11-19 14:51:36,477 INFO L226 Difference]: Without dead ends: 2526 [2021-11-19 14:51:36,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:36,481 INFO L933 BasicCegarLoop]: 1573 mSDtfsCounter, 3066 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:36,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3082 Valid, 1606 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:51:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-19 14:51:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2526. [2021-11-19 14:51:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2526 states, 1800 states have (on average 1.9722222222222223) internal successors, (3550), 2511 states have internal predecessors, (3550), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2526 states to 2526 states and 3594 transitions. [2021-11-19 14:51:36,574 INFO L78 Accepts]: Start accepts. Automaton has 2526 states and 3594 transitions. Word has length 11 [2021-11-19 14:51:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:36,574 INFO L470 AbstractCegarLoop]: Abstraction has 2526 states and 3594 transitions. [2021-11-19 14:51:36,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-19 14:51:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2526 states and 3594 transitions. [2021-11-19 14:51:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:51:36,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:36,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:36,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:36,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:36,790 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:51:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-19 14:51:36,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:36,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164539774] [2021-11-19 14:51:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:36,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:36,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:36,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:51:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:37,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:51:37,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:37,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:37,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:37,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164539774] [2021-11-19 14:51:37,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164539774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:37,133 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:37,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 14:51:37,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634191489] [2021-11-19 14:51:37,136 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:37,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:51:37,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:37,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:51:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:51:37,138 INFO L87 Difference]: Start difference. First operand 2526 states and 3594 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:37,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:37,318 INFO L93 Difference]: Finished difference Result 2498 states and 3538 transitions. [2021-11-19 14:51:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:51:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 14:51:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:37,337 INFO L225 Difference]: With dead ends: 2498 [2021-11-19 14:51:37,337 INFO L226 Difference]: Without dead ends: 2498 [2021-11-19 14:51:37,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:51:37,341 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 2998 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:37,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3014 Valid, 3082 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:51:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2021-11-19 14:51:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2496. [2021-11-19 14:51:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 1784 states have (on average 1.9573991031390134) internal successors, (3492), 2481 states have internal predecessors, (3492), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3536 transitions. [2021-11-19 14:51:37,431 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3536 transitions. Word has length 13 [2021-11-19 14:51:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:37,432 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 3536 transitions. [2021-11-19 14:51:37,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3536 transitions. [2021-11-19 14:51:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:51:37,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:37,435 INFO L514 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] [2021-11-19 14:51:37,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:37,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:37,650 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:51:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-19 14:51:37,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:37,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620181975] [2021-11-19 14:51:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:37,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:37,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:37,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:37,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:51:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:37,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:51:37,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:37,890 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 [2021-11-19 14:51:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:38,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:38,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:38,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620181975] [2021-11-19 14:51:38,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620181975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:38,115 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:38,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:51:38,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221416919] [2021-11-19 14:51:38,115 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:38,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:51:38,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:38,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:51:38,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:51:38,117 INFO L87 Difference]: Start difference. First operand 2496 states and 3536 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:43,261 INFO L93 Difference]: Finished difference Result 3497 states and 4739 transitions. [2021-11-19 14:51:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:51:43,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-19 14:51:43,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:43,286 INFO L225 Difference]: With dead ends: 3497 [2021-11-19 14:51:43,287 INFO L226 Difference]: Without dead ends: 3497 [2021-11-19 14:51:43,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:51:43,288 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 2761 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:43,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2774 Valid, 1876 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 14:51:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2021-11-19 14:51:43,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 2492. [2021-11-19 14:51:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 1784 states have (on average 1.952914798206278) internal successors, (3484), 2477 states have internal predecessors, (3484), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:51:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3528 transitions. [2021-11-19 14:51:43,380 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3528 transitions. Word has length 27 [2021-11-19 14:51:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:43,380 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 3528 transitions. [2021-11-19 14:51:43,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:51:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3528 transitions. [2021-11-19 14:51:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:51:43,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:43,382 INFO L514 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] [2021-11-19 14:51:43,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:43,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:43,598 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:51:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-19 14:51:43,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:43,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957571243] [2021-11-19 14:51:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:43,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:43,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:43,600 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:43,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:51:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:43,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:51:43,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:43,813 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 [2021-11-19 14:51:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:44,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:51:44,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:44,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957571243] [2021-11-19 14:51:44,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957571243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:44,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:51:44,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:51:44,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743778929] [2021-11-19 14:51:44,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:44,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:51:44,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:44,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:51:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:51:44,676 INFO L87 Difference]: Start difference. First operand 2492 states and 3528 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:00,081 INFO L93 Difference]: Finished difference Result 3143 states and 4113 transitions. [2021-11-19 14:52:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:52:00,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 27 [2021-11-19 14:52:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:00,100 INFO L225 Difference]: With dead ends: 3143 [2021-11-19 14:52:00,100 INFO L226 Difference]: Without dead ends: 3143 [2021-11-19 14:52:00,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:52:00,101 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1469 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3748 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:00,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 3748 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2021-11-19 14:52:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2021-11-19 14:52:00,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 2488. [2021-11-19 14:52:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 1784 states have (on average 1.9484304932735426) internal successors, (3476), 2473 states have internal predecessors, (3476), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:52:00,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 3520 transitions. [2021-11-19 14:52:00,175 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 3520 transitions. Word has length 27 [2021-11-19 14:52:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:00,176 INFO L470 AbstractCegarLoop]: Abstraction has 2488 states and 3520 transitions. [2021-11-19 14:52:00,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 3520 transitions. [2021-11-19 14:52:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-19 14:52:00,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:00,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:00,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 14:52:00,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:00,394 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:00,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-19 14:52:00,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:00,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642680674] [2021-11-19 14:52:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:00,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:00,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:00,396 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:00,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:52:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:00,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:52:00,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:00,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:00,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:00,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642680674] [2021-11-19 14:52:00,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642680674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:52:00,907 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:52:00,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:52:00,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072107469] [2021-11-19 14:52:00,908 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:52:00,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:52:00,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:00,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:52:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:52:00,910 INFO L87 Difference]: Start difference. First operand 2488 states and 3520 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:00,991 INFO L93 Difference]: Finished difference Result 2476 states and 3500 transitions. [2021-11-19 14:52:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:52:00,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-19 14:52:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:01,008 INFO L225 Difference]: With dead ends: 2476 [2021-11-19 14:52:01,009 INFO L226 Difference]: Without dead ends: 2476 [2021-11-19 14:52:01,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:52:01,010 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 1480 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:01,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 3060 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:52:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-11-19 14:52:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2476. [2021-11-19 14:52:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 1772 states have (on average 1.9503386004514673) internal successors, (3456), 2461 states have internal predecessors, (3456), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:52:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3500 transitions. [2021-11-19 14:52:01,103 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3500 transitions. Word has length 42 [2021-11-19 14:52:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:01,104 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 3500 transitions. [2021-11-19 14:52:01,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3500 transitions. [2021-11-19 14:52:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 14:52:01,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:01,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:01,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:01,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:01,322 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:01,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:01,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-19 14:52:01,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:01,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286281559] [2021-11-19 14:52:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:01,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:01,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:01,324 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:01,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:52:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:01,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:52:01,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:01,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:02,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:02,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286281559] [2021-11-19 14:52:02,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286281559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:52:02,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:52:02,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:52:02,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313390580] [2021-11-19 14:52:02,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:52:02,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:52:02,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:02,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:52:02,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:52:02,401 INFO L87 Difference]: Start difference. First operand 2476 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:02,661 INFO L93 Difference]: Finished difference Result 2665 states and 3535 transitions. [2021-11-19 14:52:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:52:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-19 14:52:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:02,677 INFO L225 Difference]: With dead ends: 2665 [2021-11-19 14:52:02,677 INFO L226 Difference]: Without dead ends: 2665 [2021-11-19 14:52:02,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:52:02,678 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 455 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:02,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 2996 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:52:02,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-11-19 14:52:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2292. [2021-11-19 14:52:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 1588 states have (on average 1.9527707808564232) internal successors, (3101), 2277 states have internal predecessors, (3101), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 14:52:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3145 transitions. [2021-11-19 14:52:02,738 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3145 transitions. Word has length 50 [2021-11-19 14:52:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:02,739 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 3145 transitions. [2021-11-19 14:52:02,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3145 transitions. [2021-11-19 14:52:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 14:52:02,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:02,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:02,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:02,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:02,956 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-19 14:52:02,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:02,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050821992] [2021-11-19 14:52:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:02,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:02,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:02,959 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:02,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:52:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:03,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:52:03,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:03,310 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 [2021-11-19 14:52:03,318 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 [2021-11-19 14:52:04,099 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 14:52:04,099 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 25 treesize of output 27 [2021-11-19 14:52:04,107 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 14:52:04,108 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 24 treesize of output 20 [2021-11-19 14:52:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:04,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:09,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:09,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050821992] [2021-11-19 14:52:09,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050821992] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:52:09,459 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:52:09,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:52:09,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551646092] [2021-11-19 14:52:09,460 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:52:09,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:52:09,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:52:09,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:52:09,462 INFO L87 Difference]: Start difference. First operand 2292 states and 3145 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:18,751 INFO L93 Difference]: Finished difference Result 2998 states and 3785 transitions. [2021-11-19 14:52:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:52:18,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 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 53 [2021-11-19 14:52:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:18,768 INFO L225 Difference]: With dead ends: 2998 [2021-11-19 14:52:18,768 INFO L226 Difference]: Without dead ends: 2998 [2021-11-19 14:52:18,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 14:52:18,769 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 2596 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 4436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2541 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:18,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2603 Valid, 2971 Invalid, 4436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1797 Invalid, 0 Unknown, 2541 Unchecked, 9.2s Time] [2021-11-19 14:52:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2021-11-19 14:52:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2387. [2021-11-19 14:52:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 1715 states have (on average 1.9067055393586005) internal successors, (3270), 2369 states have internal predecessors, (3270), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:52:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 3320 transitions. [2021-11-19 14:52:18,834 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 3320 transitions. Word has length 53 [2021-11-19 14:52:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:18,835 INFO L470 AbstractCegarLoop]: Abstraction has 2387 states and 3320 transitions. [2021-11-19 14:52:18,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 3320 transitions. [2021-11-19 14:52:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 14:52:18,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:18,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:18,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:19,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:19,053 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-19 14:52:19,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:19,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015877210] [2021-11-19 14:52:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:19,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:19,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:19,056 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:19,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:52:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:19,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:52:19,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:19,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:19,599 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 8 treesize of output 6 [2021-11-19 14:52:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:19,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:19,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015877210] [2021-11-19 14:52:19,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015877210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:52:19,921 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:52:19,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:52:19,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825758846] [2021-11-19 14:52:19,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:52:19,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:52:19,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:52:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:52:19,923 INFO L87 Difference]: Start difference. First operand 2387 states and 3320 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:24,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:24,291 INFO L93 Difference]: Finished difference Result 2385 states and 3316 transitions. [2021-11-19 14:52:24,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:52:24,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 55 [2021-11-19 14:52:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:24,302 INFO L225 Difference]: With dead ends: 2385 [2021-11-19 14:52:24,303 INFO L226 Difference]: Without dead ends: 2385 [2021-11-19 14:52:24,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:52:24,304 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 1950 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:24,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1956 Valid, 2126 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-19 14:52:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-11-19 14:52:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2385. [2021-11-19 14:52:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 1715 states have (on average 1.9043731778425657) internal successors, (3266), 2367 states have internal predecessors, (3266), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:52:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3316 transitions. [2021-11-19 14:52:24,398 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3316 transitions. Word has length 55 [2021-11-19 14:52:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:24,400 INFO L470 AbstractCegarLoop]: Abstraction has 2385 states and 3316 transitions. [2021-11-19 14:52:24,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3316 transitions. [2021-11-19 14:52:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 14:52:24,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:24,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:24,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:24,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:24,620 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-19 14:52:24,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:24,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962895697] [2021-11-19 14:52:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:24,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:24,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:24,623 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:24,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:52:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:24,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:52:24,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:24,943 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 [2021-11-19 14:52:24,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 14:52:24,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 14:52:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:25,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:25,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:25,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962895697] [2021-11-19 14:52:25,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962895697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:52:25,128 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:52:25,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:52:25,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574340746] [2021-11-19 14:52:25,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:52:25,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:52:25,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:52:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:52:25,129 INFO L87 Difference]: Start difference. First operand 2385 states and 3316 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:30,576 INFO L93 Difference]: Finished difference Result 2384 states and 3314 transitions. [2021-11-19 14:52:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:52:30,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-19 14:52:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:30,585 INFO L225 Difference]: With dead ends: 2384 [2021-11-19 14:52:30,585 INFO L226 Difference]: Without dead ends: 2384 [2021-11-19 14:52:30,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:52:30,587 INFO L933 BasicCegarLoop]: 1492 mSDtfsCounter, 4 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:30,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3780 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-19 14:52:30,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2021-11-19 14:52:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2384. [2021-11-19 14:52:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2384 states, 1715 states have (on average 1.9032069970845482) internal successors, (3264), 2366 states have internal predecessors, (3264), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:52:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 3314 transitions. [2021-11-19 14:52:30,631 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 3314 transitions. Word has length 58 [2021-11-19 14:52:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:30,632 INFO L470 AbstractCegarLoop]: Abstraction has 2384 states and 3314 transitions. [2021-11-19 14:52:30,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 3314 transitions. [2021-11-19 14:52:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 14:52:30,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:30,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:30,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:30,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:30,850 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-19 14:52:30,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:30,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712996730] [2021-11-19 14:52:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:30,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:30,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:30,852 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:30,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:52:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:31,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:52:31,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:31,207 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 [2021-11-19 14:52:31,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:52:31,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 14:52:31,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 14:52:31,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 14:52:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:31,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:31,715 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:31,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712996730] [2021-11-19 14:52:31,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712996730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:52:31,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:52:31,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 14:52:31,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407833148] [2021-11-19 14:52:31,716 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:52:31,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:52:31,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:31,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:52:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:52:31,717 INFO L87 Difference]: Start difference. First operand 2384 states and 3314 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:47,656 INFO L93 Difference]: Finished difference Result 2383 states and 3312 transitions. [2021-11-19 14:52:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:52:47,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 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 58 [2021-11-19 14:52:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:47,663 INFO L225 Difference]: With dead ends: 2383 [2021-11-19 14:52:47,664 INFO L226 Difference]: Without dead ends: 2383 [2021-11-19 14:52:47,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:52:47,665 INFO L933 BasicCegarLoop]: 1492 mSDtfsCounter, 3 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4486 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:47,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4486 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2021-11-19 14:52:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2021-11-19 14:52:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2383. [2021-11-19 14:52:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 1713 states have (on average 1.9042615294804437) internal successors, (3262), 2365 states have internal predecessors, (3262), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-19 14:52:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 3312 transitions. [2021-11-19 14:52:47,711 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 3312 transitions. Word has length 58 [2021-11-19 14:52:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:47,711 INFO L470 AbstractCegarLoop]: Abstraction has 2383 states and 3312 transitions. [2021-11-19 14:52:47,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:52:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 3312 transitions. [2021-11-19 14:52:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 14:52:47,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:47,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:47,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:47,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:47,929 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:47,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:47,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1222950270, now seen corresponding path program 1 times [2021-11-19 14:52:47,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:47,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662872418] [2021-11-19 14:52:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:47,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:47,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:47,933 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:47,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:52:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:48,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:52:48,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:48,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:48,567 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:48,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662872418] [2021-11-19 14:52:48,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662872418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:52:48,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:52:48,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:52:48,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799799574] [2021-11-19 14:52:48,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:52:48,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:52:48,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:48,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:52:48,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:52:48,570 INFO L87 Difference]: Start difference. First operand 2383 states and 3312 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:52:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:48,739 INFO L93 Difference]: Finished difference Result 2393 states and 3329 transitions. [2021-11-19 14:52:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:52:48,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2021-11-19 14:52:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:48,748 INFO L225 Difference]: With dead ends: 2393 [2021-11-19 14:52:48,748 INFO L226 Difference]: Without dead ends: 2393 [2021-11-19 14:52:48,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:52:48,750 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 7 mSDsluCounter, 5934 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7424 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:48,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 7424 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:52:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2021-11-19 14:52:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2393. [2021-11-19 14:52:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2393 states, 1721 states have (on average 1.9023823358512493) internal successors, (3274), 2374 states have internal predecessors, (3274), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-19 14:52:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3329 transitions. [2021-11-19 14:52:48,806 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3329 transitions. Word has length 66 [2021-11-19 14:52:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:48,807 INFO L470 AbstractCegarLoop]: Abstraction has 2393 states and 3329 transitions. [2021-11-19 14:52:48,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 14:52:48,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3329 transitions. [2021-11-19 14:52:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 14:52:48,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:48,809 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:48,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:49,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:52:49,018 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:49,019 INFO L85 PathProgramCache]: Analyzing trace with hash -90758754, now seen corresponding path program 1 times [2021-11-19 14:52:49,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:49,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615238253] [2021-11-19 14:52:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:49,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:49,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:49,022 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:49,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:52:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:49,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:52:49,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:49,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:49,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:49,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615238253] [2021-11-19 14:52:49,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615238253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:49,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [928324544] [2021-11-19 14:52:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:49,734 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:52:49,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:52:49,735 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:52:49,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 14:52:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:50,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:52:50,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:50,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:50,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [928324544] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:50,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214379878] [2021-11-19 14:52:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:52:50,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:52:50,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:52:50,432 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:52:50,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 14:52:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:52:50,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:52:50,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:50,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:51,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214379878] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:51,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:52:51,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 14:52:51,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176150406] [2021-11-19 14:52:51,160 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:52:51,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:52:51,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:52:51,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:52:51,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:52:51,162 INFO L87 Difference]: Start difference. First operand 2393 states and 3329 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 14:52:51,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:52:51,804 INFO L93 Difference]: Finished difference Result 2407 states and 3350 transitions. [2021-11-19 14:52:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:52:51,804 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2021-11-19 14:52:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:52:51,813 INFO L225 Difference]: With dead ends: 2407 [2021-11-19 14:52:51,813 INFO L226 Difference]: Without dead ends: 2401 [2021-11-19 14:52:51,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:52:51,815 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 46 mSDsluCounter, 5941 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7431 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:52:51,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 7431 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:52:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2021-11-19 14:52:51,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2399. [2021-11-19 14:52:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1727 states have (on average 1.8998262883613202) internal successors, (3281), 2380 states have internal predecessors, (3281), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-19 14:52:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3336 transitions. [2021-11-19 14:52:51,866 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3336 transitions. Word has length 68 [2021-11-19 14:52:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:52:51,867 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3336 transitions. [2021-11-19 14:52:51,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 14:52:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3336 transitions. [2021-11-19 14:52:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 14:52:51,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:52:51,869 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:52:51,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:52,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:52,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:52:52,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:52:52,485 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-19 14:52:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:52:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash 350507486, now seen corresponding path program 2 times [2021-11-19 14:52:52,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:52:52,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937363280] [2021-11-19 14:52:52,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:52:52,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:52:52,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:52:52,489 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:52:52,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:52:52,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:52:52,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:52,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:52:52,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:53,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:53,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:53,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937363280] [2021-11-19 14:52:53,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937363280] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:53,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [267918311] [2021-11-19 14:52:53,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:52:53,978 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:52:53,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:52:53,979 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:52:53,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 14:52:55,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:52:55,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:55,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:52:55,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:55,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:52:55,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [267918311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:55,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681143486] [2021-11-19 14:52:55,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:52:55,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:52:55,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:52:55,751 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:52:55,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c66017-3d7b-414c-9384-af5edceee4f7/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-19 14:53:15,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:53:15,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:53:15,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:53:15,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:15,086 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 [2021-11-19 14:53:15,352 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 14:53:15,352 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 15 treesize of output 15 [2021-11-19 14:53:15,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 14:55:02,883 WARN L227 SmtUtils]: Spent 23.07s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:55:02,884 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 14:55:02,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 79 [2021-11-19 14:55:03,665 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 14:55:03,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 38 [2021-11-19 14:55:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:55:03,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:06,088 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 14:55:06,089 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 62 treesize of output 61 [2021-11-19 14:55:08,164 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr361_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_104| (_ BitVec 32))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2021-11-19 15:00:45,864 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 15:00:45,865 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 112 treesize of output 111 [2021-11-19 15:00:49,739 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr361_112| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_118| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr361| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr361_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_104| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr361|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) is different from false [2021-11-19 15:01:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:19,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681143486] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:01:19,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:01:19,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-19 15:01:19,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776934235] [2021-11-19 15:01:19,326 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:01:19,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-19 15:01:19,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:19,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-19 15:01:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1448, Unknown=202, NotChecked=166, Total=1980 [2021-11-19 15:01:19,328 INFO L87 Difference]: Start difference. First operand 2399 states and 3336 transitions. Second operand has 45 states, 43 states have (on average 4.976744186046512) internal successors, (214), 43 states have internal predecessors, (214), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 15:02:10,430 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|) (forall ((|v_#Ultimate.C_memset_#t~loopctr361_112| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_118| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr361| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr361_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_104| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr361|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))) is different from false [2021-11-19 15:03:25,004 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr361_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr361|) (forall ((|v_#Ultimate.C_memset_#t~loopctr361_112| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_118| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_114| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr361| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr361_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_104| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr361|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_118|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))) (_ bv1 1)))))) is different from false [2021-11-19 15:04:01,868 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (forall ((|v_#Ultimate.C_memset_#t~loopctr361_112| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_114| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr361| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr361_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_104| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr361|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))) (_ bv1 1))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr361_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_84| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= (_ bv2 32) |c_#Ultimate.C_memset_#t~loopctr361|)) is different from false [2021-11-19 15:04:03,886 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (forall ((|v_#Ultimate.C_memset_#t~loopctr361_112| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_114| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr361| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr361_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_104| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr361|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))) (_ bv1 1))))) (= (_ bv3 32) |c_#Ultimate.C_memset_#t~loopctr361|) (exists ((|v_#Ultimate.C_memset_#t~loopctr361_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-19 15:04:05,906 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (= (_ bv4 32) |c_#Ultimate.C_memset_#t~loopctr361|) (forall ((|v_#Ultimate.C_memset_#t~loopctr361_112| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr361| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr361|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr361_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr361_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_104| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr361_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_85| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_86| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-19 15:04:07,923 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr361_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_85| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_86| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_87| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_86| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_87| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr361| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr361|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr361_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr361_104| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_106| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr361_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (= (_ bv5 32) |c_#Ultimate.C_memset_#t~loopctr361|) (bvult (bvadd (_ bv4294967295 32) |c_#Ultimate.C_memset_#t~loopctr361|) |c_#Ultimate.C_memset_#amount|)) is different from false