./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8 --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 f6961864fd80b1152371f3ae9fd5697ae273a1dc .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8 --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 f6961864fd80b1152371f3ae9fd5697ae273a1dc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:15:19,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:15:19,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:15:19,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:15:19,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:15:19,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:15:19,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:15:19,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:15:19,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:15:19,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:15:19,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:15:19,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:15:19,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:15:19,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:15:19,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:15:19,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:15:19,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:15:19,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:15:19,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:15:19,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:15:19,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:15:19,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:15:19,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:15:19,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:15:19,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:15:19,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:15:19,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:15:19,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:15:19,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:15:19,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:15:19,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:15:19,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:15:19,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:15:19,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:15:19,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:15:19,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:15:19,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:15:19,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:15:19,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:15:19,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:15:19,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:15:19,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 08:15:19,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:15:19,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:15:19,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:15:19,621 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:15:19,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:15:19,622 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:15:19,622 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:15:19,622 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:15:19,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:15:19,623 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:15:19,623 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:15:19,623 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:15:19,623 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:15:19,623 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:15:19,624 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:15:19,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 08:15:19,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 08:15:19,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:15:19,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:15:19,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 08:15:19,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:15:19,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:15:19,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:15:19,626 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 08:15:19,626 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 08:15:19,626 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 08:15:19,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:15:19,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:15:19,627 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:15:19,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:15:19,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:15:19,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:15:19,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:15:19,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:15:19,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:15:19,628 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:15:19,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:15:19,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:15:19,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:15:19,629 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_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6961864fd80b1152371f3ae9fd5697ae273a1dc [2021-10-13 08:15:19,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:15:19,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:15:19,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:15:19,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:15:19,969 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:15:19,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/sll-token-2.i [2021-10-13 08:15:20,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data/b64aeb5a9/6ae008f8f1ee4e4bb17b509fba44be42/FLAG4f059d425 [2021-10-13 08:15:20,692 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:15:20,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i [2021-10-13 08:15:20,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data/b64aeb5a9/6ae008f8f1ee4e4bb17b509fba44be42/FLAG4f059d425 [2021-10-13 08:15:20,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data/b64aeb5a9/6ae008f8f1ee4e4bb17b509fba44be42 [2021-10-13 08:15:20,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:15:20,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:15:20,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:15:20,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:15:20,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:15:20,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:20" (1/1) ... [2021-10-13 08:15:20,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233544c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:20, skipping insertion in model container [2021-10-13 08:15:20,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:20" (1/1) ... [2021-10-13 08:15:20,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:15:21,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:15:21,351 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2021-10-13 08:15:21,357 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2021-10-13 08:15:21,359 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2021-10-13 08:15:21,360 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2021-10-13 08:15:21,362 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2021-10-13 08:15:21,365 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2021-10-13 08:15:21,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:15:21,378 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:15:21,418 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2021-10-13 08:15:21,420 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2021-10-13 08:15:21,422 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2021-10-13 08:15:21,423 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2021-10-13 08:15:21,425 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2021-10-13 08:15:21,427 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2021-10-13 08:15:21,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:15:21,464 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:15:21,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21 WrapperNode [2021-10-13 08:15:21,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:15:21,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:15:21,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:15:21,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:15:21,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:15:21,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:15:21,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:15:21,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:15:21,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:15:21,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:15:21,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:15:21,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:15:21,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (1/1) ... [2021-10-13 08:15:21,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:15:21,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:15:21,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:15:21,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:15:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 08:15:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 08:15:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:15:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:15:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:15:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:15:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:15:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:15:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:15:21,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:15:22,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:15:22,333 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 08:15:22,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:15:22 BoogieIcfgContainer [2021-10-13 08:15:22,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:15:22,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:15:22,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:15:22,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:15:22,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:15:20" (1/3) ... [2021-10-13 08:15:22,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644ebd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:15:22, skipping insertion in model container [2021-10-13 08:15:22,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:21" (2/3) ... [2021-10-13 08:15:22,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644ebd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:15:22, skipping insertion in model container [2021-10-13 08:15:22,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:15:22" (3/3) ... [2021-10-13 08:15:22,346 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2021-10-13 08:15:22,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:15:22,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-10-13 08:15:22,410 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:15:22,417 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, mConcurrency=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 [2021-10-13 08:15:22,418 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-10-13 08:15:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 107 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:22,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 08:15:22,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:22,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 08:15:22,446 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:22,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:22,451 INFO L82 PathProgramCache]: Analyzing trace with hash 8405, now seen corresponding path program 1 times [2021-10-13 08:15:22,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:22,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94518164] [2021-10-13 08:15:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:22,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:22,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:22,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94518164] [2021-10-13 08:15:22,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94518164] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:22,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:22,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 08:15:22,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025849018] [2021-10-13 08:15:22,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:15:22,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:15:22,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:15:22,740 INFO L87 Difference]: Start difference. First operand has 108 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 107 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:22,888 INFO L93 Difference]: Finished difference Result 126 states and 129 transitions. [2021-10-13 08:15:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:15:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-10-13 08:15:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:22,902 INFO L225 Difference]: With dead ends: 126 [2021-10-13 08:15:22,902 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 08:15:22,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:15:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 08:15:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 105. [2021-10-13 08:15:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 53 states have (on average 2.018867924528302) internal successors, (107), 104 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2021-10-13 08:15:22,947 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 2 [2021-10-13 08:15:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:22,948 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2021-10-13 08:15:22,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2021-10-13 08:15:22,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 08:15:22,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:22,949 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 08:15:22,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:15:22,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:22,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:22,951 INFO L82 PathProgramCache]: Analyzing trace with hash 8406, now seen corresponding path program 1 times [2021-10-13 08:15:22,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:22,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485901355] [2021-10-13 08:15:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:22,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:23,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:23,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485901355] [2021-10-13 08:15:23,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485901355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:23,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:23,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 08:15:23,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259551304] [2021-10-13 08:15:23,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:15:23,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:23,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:15:23,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:15:23,028 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:23,194 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2021-10-13 08:15:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:15:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-10-13 08:15:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:23,200 INFO L225 Difference]: With dead ends: 131 [2021-10-13 08:15:23,200 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 08:15:23,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:15:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 08:15:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 103. [2021-10-13 08:15:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 102 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2021-10-13 08:15:23,212 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 2 [2021-10-13 08:15:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:23,213 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2021-10-13 08:15:23,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2021-10-13 08:15:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:15:23,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:23,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:15:23,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:15:23,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:23,215 INFO L82 PathProgramCache]: Analyzing trace with hash -821381070, now seen corresponding path program 1 times [2021-10-13 08:15:23,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:23,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963565176] [2021-10-13 08:15:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:23,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:23,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:23,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963565176] [2021-10-13 08:15:23,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963565176] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:23,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:23,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:15:23,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35977179] [2021-10-13 08:15:23,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:15:23,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:15:23,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:15:23,279 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:23,439 INFO L93 Difference]: Finished difference Result 109 states and 112 transitions. [2021-10-13 08:15:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:15:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:15:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:23,442 INFO L225 Difference]: With dead ends: 109 [2021-10-13 08:15:23,442 INFO L226 Difference]: Without dead ends: 109 [2021-10-13 08:15:23,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:23,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-13 08:15:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 92. [2021-10-13 08:15:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-10-13 08:15:23,473 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 6 [2021-10-13 08:15:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:23,474 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-10-13 08:15:23,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-10-13 08:15:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:15:23,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:23,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:15:23,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:15:23,476 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:23,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash -821381069, now seen corresponding path program 1 times [2021-10-13 08:15:23,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:23,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915102024] [2021-10-13 08:15:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:23,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:23,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:23,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915102024] [2021-10-13 08:15:23,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915102024] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:23,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:23,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:15:23,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167397278] [2021-10-13 08:15:23,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:15:23,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:15:23,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:15:23,621 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:23,851 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2021-10-13 08:15:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:15:23,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:15:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:23,855 INFO L225 Difference]: With dead ends: 166 [2021-10-13 08:15:23,856 INFO L226 Difference]: Without dead ends: 166 [2021-10-13 08:15:23,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-13 08:15:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 119. [2021-10-13 08:15:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 82 states have (on average 1.5853658536585367) internal successors, (130), 118 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2021-10-13 08:15:23,866 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 6 [2021-10-13 08:15:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:23,867 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2021-10-13 08:15:23,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2021-10-13 08:15:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:15:23,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:23,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:23,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 08:15:23,869 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:23,874 INFO L82 PathProgramCache]: Analyzing trace with hash 927018906, now seen corresponding path program 1 times [2021-10-13 08:15:23,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:23,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269034469] [2021-10-13 08:15:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:23,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:23,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:23,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269034469] [2021-10-13 08:15:23,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269034469] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:23,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:23,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:15:23,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444974209] [2021-10-13 08:15:23,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:15:23,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:15:23,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:23,982 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-10-13 08:15:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:24,112 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2021-10-13 08:15:24,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:15:24,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 08:15:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:24,116 INFO L225 Difference]: With dead ends: 118 [2021-10-13 08:15:24,116 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 08:15:24,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:15:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 08:15:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-13 08:15:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 82 states have (on average 1.5731707317073171) internal successors, (129), 117 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2021-10-13 08:15:24,150 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 8 [2021-10-13 08:15:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:24,153 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2021-10-13 08:15:24,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-10-13 08:15:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2021-10-13 08:15:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:15:24,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:24,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:24,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 08:15:24,156 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:24,156 INFO L82 PathProgramCache]: Analyzing trace with hash 927018907, now seen corresponding path program 1 times [2021-10-13 08:15:24,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:24,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799197527] [2021-10-13 08:15:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:24,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:24,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:24,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799197527] [2021-10-13 08:15:24,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799197527] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:24,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:24,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:15:24,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773420230] [2021-10-13 08:15:24,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:15:24,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:15:24,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:24,337 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-10-13 08:15:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:24,524 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2021-10-13 08:15:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:15:24,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 08:15:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:24,526 INFO L225 Difference]: With dead ends: 115 [2021-10-13 08:15:24,526 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 08:15:24,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:15:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 08:15:24,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2021-10-13 08:15:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.5333333333333334) internal successors, (115), 104 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:24,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2021-10-13 08:15:24,531 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 8 [2021-10-13 08:15:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:24,532 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2021-10-13 08:15:24,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-10-13 08:15:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2021-10-13 08:15:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:15:24,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:24,533 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:24,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 08:15:24,533 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:24,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:24,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1329117493, now seen corresponding path program 1 times [2021-10-13 08:15:24,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:24,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358424685] [2021-10-13 08:15:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:24,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:24,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:24,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358424685] [2021-10-13 08:15:24,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358424685] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:24,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:24,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:15:24,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689827943] [2021-10-13 08:15:24,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:15:24,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:15:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:24,634 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:24,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:24,726 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2021-10-13 08:15:24,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:15:24,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 08:15:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:24,728 INFO L225 Difference]: With dead ends: 104 [2021-10-13 08:15:24,728 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 08:15:24,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:15:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 08:15:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-13 08:15:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.52) internal successors, (114), 103 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2021-10-13 08:15:24,735 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 9 [2021-10-13 08:15:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:24,735 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2021-10-13 08:15:24,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2021-10-13 08:15:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:15:24,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:24,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:24,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 08:15:24,738 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:24,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:24,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1329117492, now seen corresponding path program 1 times [2021-10-13 08:15:24,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:24,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977105040] [2021-10-13 08:15:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:24,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:24,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:24,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977105040] [2021-10-13 08:15:24,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977105040] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:24,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:24,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:15:24,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255014534] [2021-10-13 08:15:24,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:15:24,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:15:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:24,872 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:24,980 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-10-13 08:15:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:15:24,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 08:15:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:24,982 INFO L225 Difference]: With dead ends: 103 [2021-10-13 08:15:24,983 INFO L226 Difference]: Without dead ends: 103 [2021-10-13 08:15:24,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:15:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-13 08:15:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-13 08:15:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-10-13 08:15:24,989 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 9 [2021-10-13 08:15:24,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:24,989 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-10-13 08:15:24,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-10-13 08:15:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:15:24,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:24,994 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:24,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 08:15:24,995 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:24,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:24,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1806938586, now seen corresponding path program 1 times [2021-10-13 08:15:24,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:24,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350538778] [2021-10-13 08:15:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:24,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:25,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:25,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350538778] [2021-10-13 08:15:25,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350538778] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:25,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:25,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:15:25,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966428432] [2021-10-13 08:15:25,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:15:25,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:25,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:15:25,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:25,090 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:25,201 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2021-10-13 08:15:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:15:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-13 08:15:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:25,203 INFO L225 Difference]: With dead ends: 109 [2021-10-13 08:15:25,203 INFO L226 Difference]: Without dead ends: 109 [2021-10-13 08:15:25,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:15:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-13 08:15:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2021-10-13 08:15:25,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.5) internal successors, (111), 100 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-10-13 08:15:25,208 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 10 [2021-10-13 08:15:25,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:25,209 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-10-13 08:15:25,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-10-13 08:15:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:15:25,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:25,210 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:25,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 08:15:25,211 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:25,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:25,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1676451459, now seen corresponding path program 1 times [2021-10-13 08:15:25,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:25,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547621667] [2021-10-13 08:15:25,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:25,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:25,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:25,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547621667] [2021-10-13 08:15:25,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547621667] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:25,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:25,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:15:25,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466604219] [2021-10-13 08:15:25,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:15:25,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:15:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:15:25,292 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:25,385 INFO L93 Difference]: Finished difference Result 150 states and 155 transitions. [2021-10-13 08:15:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:15:25,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 08:15:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:25,386 INFO L225 Difference]: With dead ends: 150 [2021-10-13 08:15:25,386 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 08:15:25,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 08:15:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 99. [2021-10-13 08:15:25,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 98 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2021-10-13 08:15:25,390 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 11 [2021-10-13 08:15:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:25,390 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2021-10-13 08:15:25,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2021-10-13 08:15:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:15:25,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:25,391 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:25,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 08:15:25,392 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:25,392 INFO L82 PathProgramCache]: Analyzing trace with hash 935207482, now seen corresponding path program 1 times [2021-10-13 08:15:25,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:25,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862206535] [2021-10-13 08:15:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:25,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:25,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:25,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862206535] [2021-10-13 08:15:25,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862206535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:25,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:25,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:15:25,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208488171] [2021-10-13 08:15:25,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:15:25,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:25,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:15:25,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:25,434 INFO L87 Difference]: Start difference. First operand 99 states and 109 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) [2021-10-13 08:15:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:25,542 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2021-10-13 08:15:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:15:25,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 08:15:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:25,544 INFO L225 Difference]: With dead ends: 97 [2021-10-13 08:15:25,544 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 08:15:25,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:15:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 08:15:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-13 08:15:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-10-13 08:15:25,548 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 16 [2021-10-13 08:15:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:25,548 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-10-13 08:15:25,548 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) [2021-10-13 08:15:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-10-13 08:15:25,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:15:25,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:25,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:25,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 08:15:25,550 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:25,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:25,554 INFO L82 PathProgramCache]: Analyzing trace with hash 935240253, now seen corresponding path program 1 times [2021-10-13 08:15:25,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:25,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055593357] [2021-10-13 08:15:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:25,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:25,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:25,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055593357] [2021-10-13 08:15:25,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055593357] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:25,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:25,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 08:15:25,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753090734] [2021-10-13 08:15:25,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 08:15:25,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:25,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 08:15:25,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:15:25,834 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 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) [2021-10-13 08:15:26,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:26,096 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2021-10-13 08:15:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:15:26,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 08:15:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:26,097 INFO L225 Difference]: With dead ends: 126 [2021-10-13 08:15:26,098 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 08:15:26,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:15:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 08:15:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 107. [2021-10-13 08:15:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2021-10-13 08:15:26,102 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 16 [2021-10-13 08:15:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:26,102 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2021-10-13 08:15:26,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 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) [2021-10-13 08:15:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2021-10-13 08:15:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:15:26,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:26,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:26,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 08:15:26,103 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:26,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:26,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1086358635, now seen corresponding path program 1 times [2021-10-13 08:15:26,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:26,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219815655] [2021-10-13 08:15:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:26,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:26,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:26,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219815655] [2021-10-13 08:15:26,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219815655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:26,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:26,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 08:15:26,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319121319] [2021-10-13 08:15:26,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:15:26,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:26,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:15:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:15:26,268 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:26,567 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2021-10-13 08:15:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:15:26,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 08:15:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:26,569 INFO L225 Difference]: With dead ends: 128 [2021-10-13 08:15:26,569 INFO L226 Difference]: Without dead ends: 128 [2021-10-13 08:15:26,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:15:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-13 08:15:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2021-10-13 08:15:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 87 states have (on average 1.4137931034482758) internal successors, (123), 111 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2021-10-13 08:15:26,574 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 18 [2021-10-13 08:15:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:26,574 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-10-13 08:15:26,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2021-10-13 08:15:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:15:26,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:26,575 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:26,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 08:15:26,575 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:26,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:26,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1086358636, now seen corresponding path program 1 times [2021-10-13 08:15:26,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:26,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061825983] [2021-10-13 08:15:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:26,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:26,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:26,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061825983] [2021-10-13 08:15:26,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061825983] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:26,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:26,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 08:15:26,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507514165] [2021-10-13 08:15:26,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:15:26,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:26,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:15:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:15:26,744 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:27,020 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2021-10-13 08:15:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:15:27,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 08:15:27,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:27,022 INFO L225 Difference]: With dead ends: 132 [2021-10-13 08:15:27,022 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 08:15:27,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 74.4ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:15:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 08:15:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2021-10-13 08:15:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 111 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2021-10-13 08:15:27,026 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 18 [2021-10-13 08:15:27,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:27,027 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2021-10-13 08:15:27,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2021-10-13 08:15:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 08:15:27,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:27,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:15:27,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 08:15:27,029 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:27,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:27,030 INFO L82 PathProgramCache]: Analyzing trace with hash 313599339, now seen corresponding path program 1 times [2021-10-13 08:15:27,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:27,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081028264] [2021-10-13 08:15:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:27,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:27,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:27,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081028264] [2021-10-13 08:15:27,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081028264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:27,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:27,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 08:15:27,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746810320] [2021-10-13 08:15:27,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:15:27,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:15:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:15:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:15:27,221 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:27,496 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2021-10-13 08:15:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 08:15:27,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-10-13 08:15:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:27,498 INFO L225 Difference]: With dead ends: 130 [2021-10-13 08:15:27,498 INFO L226 Difference]: Without dead ends: 130 [2021-10-13 08:15:27,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-13 08:15:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-13 08:15:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 113. [2021-10-13 08:15:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 112 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2021-10-13 08:15:27,502 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 20 [2021-10-13 08:15:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:27,503 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2021-10-13 08:15:27,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:15:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2021-10-13 08:15:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:15:27,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:27,504 INFO L512 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] [2021-10-13 08:15:27,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 08:15:27,505 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:15:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash -867293792, now seen corresponding path program 1 times [2021-10-13 08:15:27,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:15:27,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388310567] [2021-10-13 08:15:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:27,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:15:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:27,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:15:27,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388310567] [2021-10-13 08:15:27,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388310567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:15:27,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462693407] [2021-10-13 08:15:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:27,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:15:27,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:15:27,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:15:27,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:15:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:27,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 08:15:27,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:15:28,147 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-13 08:15:28,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2021-10-13 08:15:28,814 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 [2021-10-13 08:15:29,152 INFO L354 Elim1Store]: treesize reduction 44, result has 45.7 percent of original size [2021-10-13 08:15:29,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 36 treesize of output 62 [2021-10-13 08:15:29,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:15:29,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:29,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-10-13 08:15:29,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-10-13 08:15:29,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 08:15:29,600 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:15:29,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-10-13 08:15:29,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-10-13 08:15:29,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:15:29,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:29,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-10-13 08:15:29,734 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 29 treesize of output 21 [2021-10-13 08:15:29,856 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-10-13 08:15:29,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 50 [2021-10-13 08:15:30,105 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:15:30,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2021-10-13 08:15:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:30,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:15:33,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:33,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:15:34,774 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_1)))) (store .cse0 |c_ULTIMATE.start_main_#t~malloc7.base| (store (select .cse0 |c_ULTIMATE.start_main_#t~malloc7.base|) (+ |ULTIMATE.start_main_#t~mem8.offset| 4) 2))) c_ULTIMATE.start_main_~head~0.base) (+ c_ULTIMATE.start_main_~head~0.offset 4)) 0)) is different from false [2021-10-13 08:15:41,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:41,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-13 08:15:41,137 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 08:15:41,137 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 90 treesize of output 89 [2021-10-13 08:15:43,161 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0.offset_81 Int) (v_DerPreprocessor_2 Int) (|ULTIMATE.start_main_#t~mem8.offset| Int) (v_DerPreprocessor_1 Int) (|v_ULTIMATE.start_main_#t~malloc7.base_15| Int)) (or (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_15|) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_2)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc5.base| (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc5.base|) (+ v_ULTIMATE.start_main_~x~0.offset_81 4) 1) v_ULTIMATE.start_main_~x~0.offset_81 v_DerPreprocessor_1))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_15| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_15|) (+ |ULTIMATE.start_main_#t~mem8.offset| 4) 2))) c_ULTIMATE.start_main_~head~0.base) (+ c_ULTIMATE.start_main_~head~0.offset 4)) 0))) is different from false [2021-10-13 08:15:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:15:53,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462693407] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:15:53,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109018970] [2021-10-13 08:15:53,943 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-10-13 08:15:53,944 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:15:53,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:15:53,956 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:15:53,957 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:15:53,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:53,998 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:15:53,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:53,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:15:54,000 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:15:54,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:54,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-13 08:15:54,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 08:15:54,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:54,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:54,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:54,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:54,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:54,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:54,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:15:54,068 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-13 08:15:54,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 54 [2021-10-13 08:15:54,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:54,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-13 08:15:54,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:54,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-13 08:15:54,074 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:15:54,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:15:54,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:54,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:15:54,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-10-13 08:15:54,087 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:15:54,088 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:128, output treesize:112 [2021-10-13 08:15:54,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:15:54,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:15:54,302 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_76| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:15:54,307 INFO L168 Benchmark]: Toolchain (without parser) took 33359.13 ms. Allocated memory was 102.8 MB in the beginning and 169.9 MB in the end (delta: 67.1 MB). Free memory was 61.2 MB in the beginning and 90.9 MB in the end (delta: -29.7 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:54,307 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 79.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:15:54,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.21 ms. Allocated memory is still 102.8 MB. Free memory was 61.0 MB in the beginning and 70.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:54,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.21 ms. Allocated memory is still 102.8 MB. Free memory was 70.3 MB in the beginning and 68.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:54,308 INFO L168 Benchmark]: Boogie Preprocessor took 43.29 ms. Allocated memory is still 102.8 MB. Free memory was 68.1 MB in the beginning and 66.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:54,308 INFO L168 Benchmark]: RCFGBuilder took 757.66 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 45.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:54,309 INFO L168 Benchmark]: TraceAbstraction took 31967.54 ms. Allocated memory was 102.8 MB in the beginning and 169.9 MB in the end (delta: 67.1 MB). Free memory was 44.7 MB in the beginning and 90.9 MB in the end (delta: -46.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:54,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 79.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.21 ms. Allocated memory is still 102.8 MB. Free memory was 61.0 MB in the beginning and 70.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.21 ms. Allocated memory is still 102.8 MB. Free memory was 70.3 MB in the beginning and 68.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.29 ms. Allocated memory is still 102.8 MB. Free memory was 68.1 MB in the beginning and 66.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 757.66 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 45.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 31967.54 ms. Allocated memory was 102.8 MB in the beginning and 169.9 MB in the end (delta: 67.1 MB). Free memory was 44.7 MB in the beginning and 90.9 MB in the end (delta: -46.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_76| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_76|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:15:54,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:15:56,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:15:56,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:15:56,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:15:56,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:15:56,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:15:56,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:15:56,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:15:56,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:15:56,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:15:56,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:15:56,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:15:56,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:15:56,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:15:56,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:15:56,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:15:56,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:15:56,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:15:56,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:15:56,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:15:56,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:15:57,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:15:57,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:15:57,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:15:57,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:15:57,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:15:57,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:15:57,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:15:57,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:15:57,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:15:57,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:15:57,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:15:57,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:15:57,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:15:57,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:15:57,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:15:57,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:15:57,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:15:57,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:15:57,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:15:57,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:15:57,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 08:15:57,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:15:57,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:15:57,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:15:57,119 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:15:57,120 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:15:57,120 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:15:57,120 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:15:57,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:15:57,121 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:15:57,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 08:15:57,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 08:15:57,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:15:57,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:15:57,125 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 08:15:57,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:15:57,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:15:57,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:15:57,126 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 08:15:57,127 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 08:15:57,127 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 08:15:57,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:15:57,127 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:15:57,128 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:15:57,128 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:15:57,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:15:57,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:15:57,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:15:57,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:15:57,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:15:57,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:15:57,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:15:57,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:15:57,131 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:15:57,131 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:15:57,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:15:57,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:15:57,132 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_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6961864fd80b1152371f3ae9fd5697ae273a1dc [2021-10-13 08:15:57,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:15:57,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:15:57,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:15:57,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:15:57,629 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:15:57,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/sll-token-2.i [2021-10-13 08:15:57,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data/4b02daab4/3e000fdcc0e44b4fa4f91c46cbea098d/FLAGc97957d44 [2021-10-13 08:15:58,351 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:15:58,352 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i [2021-10-13 08:15:58,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data/4b02daab4/3e000fdcc0e44b4fa4f91c46cbea098d/FLAGc97957d44 [2021-10-13 08:15:58,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/data/4b02daab4/3e000fdcc0e44b4fa4f91c46cbea098d [2021-10-13 08:15:58,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:15:58,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:15:58,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:15:58,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:15:58,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:15:58,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:58" (1/1) ... [2021-10-13 08:15:58,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76cd6e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:58, skipping insertion in model container [2021-10-13 08:15:58,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:58" (1/1) ... [2021-10-13 08:15:58,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:15:58,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:15:59,010 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2021-10-13 08:15:59,017 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2021-10-13 08:15:59,019 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2021-10-13 08:15:59,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2021-10-13 08:15:59,022 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2021-10-13 08:15:59,026 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2021-10-13 08:15:59,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:15:59,047 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:15:59,093 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2021-10-13 08:15:59,096 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2021-10-13 08:15:59,098 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2021-10-13 08:15:59,111 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2021-10-13 08:15:59,112 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2021-10-13 08:15:59,115 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2021-10-13 08:15:59,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:15:59,175 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:15:59,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59 WrapperNode [2021-10-13 08:15:59,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:15:59,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:15:59,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:15:59,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:15:59,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:15:59,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:15:59,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:15:59,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:15:59,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:15:59,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:15:59,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:15:59,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:15:59,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (1/1) ... [2021-10-13 08:15:59,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:15:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:15:59,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:15:59,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:15:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 08:15:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:15:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:15:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:15:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:15:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:15:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 08:15:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:15:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:15:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:16:00,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:16:00,129 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 08:16:00,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:16:00 BoogieIcfgContainer [2021-10-13 08:16:00,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:16:00,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:16:00,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:16:00,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:16:00,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:15:58" (1/3) ... [2021-10-13 08:16:00,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c4894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:16:00, skipping insertion in model container [2021-10-13 08:16:00,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:59" (2/3) ... [2021-10-13 08:16:00,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c4894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:16:00, skipping insertion in model container [2021-10-13 08:16:00,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:16:00" (3/3) ... [2021-10-13 08:16:00,148 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2021-10-13 08:16:00,154 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:16:00,154 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-10-13 08:16:00,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:16:00,231 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, mConcurrency=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 [2021-10-13 08:16:00,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-10-13 08:16:00,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 63 states have (on average 2.238095238095238) internal successors, (141), 117 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 08:16:00,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:00,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 08:16:00,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:00,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:00,290 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-13 08:16:00,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:00,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637147277] [2021-10-13 08:16:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:00,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:00,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:00,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:00,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:16:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:00,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:16:00,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:00,504 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 [2021-10-13 08:16:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:00,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:00,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:00,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637147277] [2021-10-13 08:16:00,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637147277] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:00,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:00,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:16:00,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163110685] [2021-10-13 08:16:00,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:16:00,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:16:00,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:16:00,598 INFO L87 Difference]: Start difference. First operand has 118 states, 63 states have (on average 2.238095238095238) internal successors, (141), 117 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:00,902 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2021-10-13 08:16:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:16:00,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-10-13 08:16:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:00,917 INFO L225 Difference]: With dead ends: 136 [2021-10-13 08:16:00,918 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 08:16:00,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:16:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 08:16:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 114. [2021-10-13 08:16:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 113 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2021-10-13 08:16:00,984 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 3 [2021-10-13 08:16:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:00,984 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2021-10-13 08:16:00,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2021-10-13 08:16:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 08:16:00,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:00,986 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 08:16:01,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:01,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:01,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:01,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:01,199 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-13 08:16:01,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:01,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518508540] [2021-10-13 08:16:01,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:01,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:01,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:01,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:01,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:16:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:01,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:16:01,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:01,290 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 [2021-10-13 08:16:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:01,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:01,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:01,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518508540] [2021-10-13 08:16:01,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518508540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:01,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:01,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 08:16:01,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885373095] [2021-10-13 08:16:01,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:16:01,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:16:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:16:01,377 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-13 08:16:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:01,688 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2021-10-13 08:16:01,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:16:01,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 3 [2021-10-13 08:16:01,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:01,693 INFO L225 Difference]: With dead ends: 140 [2021-10-13 08:16:01,693 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 08:16:01,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:16:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 08:16:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2021-10-13 08:16:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 62 states have (on average 1.8387096774193548) internal successors, (114), 111 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2021-10-13 08:16:01,712 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 3 [2021-10-13 08:16:01,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:01,713 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2021-10-13 08:16:01,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-13 08:16:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2021-10-13 08:16:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:16:01,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:01,714 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:01,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:01,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:01,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:01,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1803027143, now seen corresponding path program 1 times [2021-10-13 08:16:01,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:01,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707274236] [2021-10-13 08:16:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:01,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:01,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:01,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:01,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:16:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:02,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:16:02,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:02,042 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 [2021-10-13 08:16:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:02,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:02,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:02,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707274236] [2021-10-13 08:16:02,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707274236] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:02,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:02,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:16:02,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191368424] [2021-10-13 08:16:02,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:16:02,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:02,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:16:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:16:02,126 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:02,560 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2021-10-13 08:16:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:16:02,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 08:16:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:02,563 INFO L225 Difference]: With dead ends: 118 [2021-10-13 08:16:02,563 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 08:16:02,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:16:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 08:16:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 101. [2021-10-13 08:16:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 64 states have (on average 1.640625) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-13 08:16:02,589 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 7 [2021-10-13 08:16:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:02,590 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-13 08:16:02,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-13 08:16:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:16:02,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:02,594 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:02,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:02,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:02,806 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:02,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1803027144, now seen corresponding path program 1 times [2021-10-13 08:16:02,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:02,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703404990] [2021-10-13 08:16:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:02,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:02,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:02,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:02,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:16:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:02,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:16:02,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:02,893 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 [2021-10-13 08:16:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:02,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:03,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:03,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703404990] [2021-10-13 08:16:03,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703404990] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:03,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:03,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 08:16:03,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127800462] [2021-10-13 08:16:03,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:16:03,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:16:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:16:03,222 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2021-10-13 08:16:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:04,035 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2021-10-13 08:16:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:16:04,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 7 [2021-10-13 08:16:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:04,038 INFO L225 Difference]: With dead ends: 177 [2021-10-13 08:16:04,038 INFO L226 Difference]: Without dead ends: 177 [2021-10-13 08:16:04,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 202.2ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:16:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-13 08:16:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 127. [2021-10-13 08:16:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 126 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-10-13 08:16:04,049 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 7 [2021-10-13 08:16:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:04,050 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-10-13 08:16:04,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2021-10-13 08:16:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-10-13 08:16:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:16:04,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:04,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:04,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:04,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:04,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:04,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:04,259 INFO L82 PathProgramCache]: Analyzing trace with hash 406735527, now seen corresponding path program 1 times [2021-10-13 08:16:04,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:04,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27465381] [2021-10-13 08:16:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:04,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:04,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:04,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:04,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:16:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:04,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:16:04,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:04,359 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 [2021-10-13 08:16:04,379 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 20 treesize of output 16 [2021-10-13 08:16:04,405 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 23 treesize of output 15 [2021-10-13 08:16:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:04,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:04,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:04,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27465381] [2021-10-13 08:16:04,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27465381] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:04,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:04,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:16:04,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149813255] [2021-10-13 08:16:04,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:16:04,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:04,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:16:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:16:04,476 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:04,993 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-10-13 08:16:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:16:04,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 08:16:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:04,995 INFO L225 Difference]: With dead ends: 126 [2021-10-13 08:16:04,995 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 08:16:04,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:16:04,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 08:16:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-13 08:16:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-10-13 08:16:05,005 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 11 [2021-10-13 08:16:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:05,006 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-10-13 08:16:05,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-10-13 08:16:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:16:05,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:05,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:05,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:05,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:05,224 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:05,225 INFO L82 PathProgramCache]: Analyzing trace with hash 406735528, now seen corresponding path program 1 times [2021-10-13 08:16:05,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:05,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927577523] [2021-10-13 08:16:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:05,226 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:05,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:05,227 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:05,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:16:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:05,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:16:05,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:05,340 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 [2021-10-13 08:16:05,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 08:16:05,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 08:16:05,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-13 08:16:05,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-13 08:16:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:05,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:05,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:05,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927577523] [2021-10-13 08:16:05,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927577523] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:05,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:05,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 08:16:05,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884813882] [2021-10-13 08:16:05,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:16:05,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:05,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:16:05,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:16:05,829 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:07,068 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-10-13 08:16:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:16:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 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 [2021-10-13 08:16:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:07,071 INFO L225 Difference]: With dead ends: 126 [2021-10-13 08:16:07,071 INFO L226 Difference]: Without dead ends: 126 [2021-10-13 08:16:07,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 389.8ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-13 08:16:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-13 08:16:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2021-10-13 08:16:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 111 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2021-10-13 08:16:07,086 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 11 [2021-10-13 08:16:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:07,086 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2021-10-13 08:16:07,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2021-10-13 08:16:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 08:16:07,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:07,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:07,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:07,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:07,295 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1104437320, now seen corresponding path program 1 times [2021-10-13 08:16:07,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:07,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822188963] [2021-10-13 08:16:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:07,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:07,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:07,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:07,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:16:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:07,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:16:07,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:07,437 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 [2021-10-13 08:16:07,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-13 08:16:07,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 08:16:07,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-13 08:16:07,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-13 08:16:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:07,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:07,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:07,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822188963] [2021-10-13 08:16:07,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822188963] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:07,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:07,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 08:16:07,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913541209] [2021-10-13 08:16:07,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:16:07,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:16:07,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:16:07,770 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:08,472 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-10-13 08:16:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:16:08,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 12 [2021-10-13 08:16:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:08,473 INFO L225 Difference]: With dead ends: 111 [2021-10-13 08:16:08,474 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 08:16:08,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 187.3ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:16:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 08:16:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-13 08:16:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 85 states have (on average 1.423529411764706) internal successors, (121), 110 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-10-13 08:16:08,493 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 12 [2021-10-13 08:16:08,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:08,494 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-10-13 08:16:08,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-10-13 08:16:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 08:16:08,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:08,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:08,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:08,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:08,708 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1104437321, now seen corresponding path program 1 times [2021-10-13 08:16:08,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:08,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732787561] [2021-10-13 08:16:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:08,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:08,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:08,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:08,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 08:16:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:08,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:16:08,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:08,823 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 [2021-10-13 08:16:08,837 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 20 treesize of output 16 [2021-10-13 08:16:08,865 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 23 treesize of output 15 [2021-10-13 08:16:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:08,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:08,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:08,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732787561] [2021-10-13 08:16:08,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732787561] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:08,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:08,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 08:16:08,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802897252] [2021-10-13 08:16:08,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:16:08,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:16:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:16:08,942 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:09,246 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-13 08:16:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:16:09,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 08:16:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:09,248 INFO L225 Difference]: With dead ends: 110 [2021-10-13 08:16:09,248 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 08:16:09,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:16:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 08:16:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-13 08:16:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 85 states have (on average 1.411764705882353) internal successors, (120), 109 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2021-10-13 08:16:09,254 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 12 [2021-10-13 08:16:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:09,255 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2021-10-13 08:16:09,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:09,255 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2021-10-13 08:16:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 08:16:09,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:09,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:09,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:09,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:09,469 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:09,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash 30817671, now seen corresponding path program 1 times [2021-10-13 08:16:09,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:09,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943565181] [2021-10-13 08:16:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:09,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:09,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:09,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:09,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 08:16:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:09,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:16:09,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:09,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:16:09,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-10-13 08:16:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:09,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:09,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:09,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943565181] [2021-10-13 08:16:09,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943565181] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:09,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:09,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 08:16:09,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269307977] [2021-10-13 08:16:09,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:16:09,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:09,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:16:09,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:16:09,757 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2021-10-13 08:16:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:10,074 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-10-13 08:16:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 08:16:10,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 08:16:10,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:10,075 INFO L225 Difference]: With dead ends: 120 [2021-10-13 08:16:10,075 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 08:16:10,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 78.2ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:16:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 08:16:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2021-10-13 08:16:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.4047619047619047) internal successors, (118), 107 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2021-10-13 08:16:10,079 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 13 [2021-10-13 08:16:10,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:10,079 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2021-10-13 08:16:10,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2021-10-13 08:16:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2021-10-13 08:16:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:16:10,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:10,081 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:10,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:10,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:10,286 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:10,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:10,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1452259692, now seen corresponding path program 1 times [2021-10-13 08:16:10,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:10,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126829538] [2021-10-13 08:16:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:10,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:10,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:10,288 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:10,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 08:16:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:10,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:16:10,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:10,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:10,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:10,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126829538] [2021-10-13 08:16:10,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126829538] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:10,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:10,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 08:16:10,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912332023] [2021-10-13 08:16:10,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:16:10,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:16:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:16:10,502 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:10,751 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2021-10-13 08:16:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:16:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:16:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:10,753 INFO L225 Difference]: With dead ends: 162 [2021-10-13 08:16:10,753 INFO L226 Difference]: Without dead ends: 162 [2021-10-13 08:16:10,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:16:10,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-13 08:16:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 106. [2021-10-13 08:16:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 105 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2021-10-13 08:16:10,757 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 15 [2021-10-13 08:16:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:10,758 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2021-10-13 08:16:10,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2021-10-13 08:16:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 08:16:10,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:10,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:10,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:10,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:10,966 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:10,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:10,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1205348374, now seen corresponding path program 1 times [2021-10-13 08:16:10,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:10,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565592041] [2021-10-13 08:16:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:10,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:10,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:10,968 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:10,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 08:16:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:11,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:16:11,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:11,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-13 08:16:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:11,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:11,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:11,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565592041] [2021-10-13 08:16:11,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565592041] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:11,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:11,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 08:16:11,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348071837] [2021-10-13 08:16:11,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:16:11,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:16:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:16:11,274 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:11,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:11,525 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-10-13 08:16:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:16:11,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 20 [2021-10-13 08:16:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:11,527 INFO L225 Difference]: With dead ends: 104 [2021-10-13 08:16:11,527 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 08:16:11,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:16:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 08:16:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-13 08:16:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 103 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2021-10-13 08:16:11,531 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 20 [2021-10-13 08:16:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:11,531 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2021-10-13 08:16:11,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2021-10-13 08:16:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 08:16:11,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:11,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:16:11,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:11,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:11,742 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:11,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1205315603, now seen corresponding path program 1 times [2021-10-13 08:16:11,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:11,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524184302] [2021-10-13 08:16:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:11,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:11,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:11,745 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:11,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 08:16:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:11,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:16:11,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:11,957 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 [2021-10-13 08:16:12,019 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 [2021-10-13 08:16:12,084 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:16:12,084 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 [2021-10-13 08:16:12,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:16:12,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:16:12,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:16:12,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-10-13 08:16:12,288 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-13 08:16:12,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:16:12,509 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-13 08:16:12,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 14 [2021-10-13 08:16:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:12,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:12,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:16:12,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 08:16:15,022 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 212 treesize of output 200 [2021-10-13 08:16:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:15,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:15,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524184302] [2021-10-13 08:16:15,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524184302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:15,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:15,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 17 [2021-10-13 08:16:15,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968357679] [2021-10-13 08:16:15,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 08:16:15,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 08:16:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=219, Unknown=1, NotChecked=0, Total=272 [2021-10-13 08:16:15,308 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:18,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:18,024 INFO L93 Difference]: Finished difference Result 197 states and 202 transitions. [2021-10-13 08:16:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 08:16:18,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-13 08:16:18,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:18,026 INFO L225 Difference]: With dead ends: 197 [2021-10-13 08:16:18,026 INFO L226 Difference]: Without dead ends: 197 [2021-10-13 08:16:18,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3376.2ms TimeCoverageRelationStatistics Valid=206, Invalid=605, Unknown=1, NotChecked=0, Total=812 [2021-10-13 08:16:18,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-13 08:16:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 116. [2021-10-13 08:16:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-10-13 08:16:18,031 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 20 [2021-10-13 08:16:18,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:18,032 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-10-13 08:16:18,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-10-13 08:16:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:16:18,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:18,033 INFO L512 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] [2021-10-13 08:16:18,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:18,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:18,242 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:18,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:18,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1692196743, now seen corresponding path program 1 times [2021-10-13 08:16:18,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:18,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184970941] [2021-10-13 08:16:18,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:18,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:18,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:18,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:18,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 08:16:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:16:18,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:16:18,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:16:18,480 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 [2021-10-13 08:16:18,583 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 08:16:18,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-13 08:16:18,670 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 24 treesize of output 20 [2021-10-13 08:16:18,884 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:16:18,885 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 1 case distinctions, treesize of input 57 treesize of output 43 [2021-10-13 08:16:19,187 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 49 treesize of output 37 [2021-10-13 08:16:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:19,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:16:19,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:16:19,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-13 08:16:33,375 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_2))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)))))))))) (_ bv1 1)))) is different from false [2021-10-13 08:16:33,396 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 134 treesize of output 130 [2021-10-13 08:16:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:16:49,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:16:49,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184970941] [2021-10-13 08:16:49,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184970941] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:16:49,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:16:49,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-13 08:16:49,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751084936] [2021-10-13 08:16:49,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 08:16:49,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:16:49,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 08:16:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=260, Unknown=12, NotChecked=34, Total=380 [2021-10-13 08:16:49,371 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:16:59,719 INFO L93 Difference]: Finished difference Result 178 states and 185 transitions. [2021-10-13 08:16:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 08:16:59,721 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 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 23 [2021-10-13 08:16:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:16:59,722 INFO L225 Difference]: With dead ends: 178 [2021-10-13 08:16:59,722 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 08:16:59,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 37854.2ms TimeCoverageRelationStatistics Valid=202, Invalid=542, Unknown=16, NotChecked=52, Total=812 [2021-10-13 08:16:59,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 08:16:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 122. [2021-10-13 08:16:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.33) internal successors, (133), 121 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2021-10-13 08:16:59,728 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 23 [2021-10-13 08:16:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:16:59,728 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2021-10-13 08:16:59,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:16:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2021-10-13 08:16:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:16:59,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:16:59,730 INFO L512 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] [2021-10-13 08:16:59,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 08:16:59,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:16:59,930 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:16:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:16:59,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1692196744, now seen corresponding path program 1 times [2021-10-13 08:16:59,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:16:59,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693628347] [2021-10-13 08:16:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:16:59,932 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:16:59,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:16:59,935 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:16:59,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 08:17:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:17:00,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 08:17:00,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:17:00,217 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 [2021-10-13 08:17:00,311 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:17:00,311 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 [2021-10-13 08:17:00,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 08:17:00,375 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 21 treesize of output 17 [2021-10-13 08:17:00,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 08:17:00,537 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:17:00,537 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 1 case distinctions, treesize of input 87 treesize of output 61 [2021-10-13 08:17:00,552 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:17:00,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2021-10-13 08:17:00,769 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 31 [2021-10-13 08:17:00,774 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 28 treesize of output 16 [2021-10-13 08:17:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:17:00,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:17:01,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:01,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-13 08:17:01,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:01,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-13 08:17:03,454 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8.base|) .cse0 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8.base|) .cse0 v_DerPreprocessor_3)) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset))))) (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8.base|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_4)) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1))))) is different from false [2021-10-13 08:17:16,336 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 33 [2021-10-13 08:17:16,372 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 214 treesize of output 210 [2021-10-13 08:17:16,378 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 870 treesize of output 838 [2021-10-13 08:17:26,770 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 98 treesize of output 90 [2021-10-13 08:17:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:17:27,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:17:27,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693628347] [2021-10-13 08:17:27,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693628347] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:17:27,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:17:27,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-13 08:17:27,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106198694] [2021-10-13 08:17:27,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 08:17:27,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:17:27,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 08:17:27,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=257, Unknown=2, NotChecked=32, Total=342 [2021-10-13 08:17:27,394 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 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) [2021-10-13 08:17:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:17:35,759 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2021-10-13 08:17:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 08:17:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 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 23 [2021-10-13 08:17:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:17:35,762 INFO L225 Difference]: With dead ends: 195 [2021-10-13 08:17:35,762 INFO L226 Difference]: Without dead ends: 195 [2021-10-13 08:17:35,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 20964.8ms TimeCoverageRelationStatistics Valid=195, Invalid=677, Unknown=2, NotChecked=56, Total=930 [2021-10-13 08:17:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-13 08:17:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 122. [2021-10-13 08:17:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.32) internal successors, (132), 121 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:17:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-10-13 08:17:35,768 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 23 [2021-10-13 08:17:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:17:35,768 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-10-13 08:17:35,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 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) [2021-10-13 08:17:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-10-13 08:17:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 08:17:35,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:17:35,770 INFO L512 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] [2021-10-13 08:17:35,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 08:17:35,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:17:35,983 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:17:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:17:35,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1591531161, now seen corresponding path program 1 times [2021-10-13 08:17:35,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:17:35,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344503315] [2021-10-13 08:17:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:17:35,984 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:17:35,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:17:35,985 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:17:36,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 08:17:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:17:36,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 08:17:36,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:17:36,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 08:17:36,541 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:17:36,541 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 1 case distinctions, treesize of input 111 treesize of output 85 [2021-10-13 08:17:36,545 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 72 treesize of output 64 [2021-10-13 08:17:36,562 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-13 08:17:36,563 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 1 case distinctions, treesize of input 64 treesize of output 50 [2021-10-13 08:17:36,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-10-13 08:17:36,871 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 29 treesize of output 21 [2021-10-13 08:17:36,979 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:17:36,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 14 [2021-10-13 08:17:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:17:37,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:17:37,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:37,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 120 treesize of output 123 [2021-10-13 08:17:37,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:37,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-13 08:17:37,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:37,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-13 08:17:37,729 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:37,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 106 treesize of output 85 [2021-10-13 08:17:38,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:17:38,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344503315] [2021-10-13 08:17:38,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_6 [2021-10-13 08:17:38,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [314973016] [2021-10-13 08:17:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:17:38,118 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:17:38,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:17:38,120 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:17:38,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-13 08:17:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:17:38,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 08:17:38,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:17:38,651 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 [2021-10-13 08:17:38,842 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:17:38,842 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 16 treesize of output 16 [2021-10-13 08:17:38,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 08:17:38,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:17:39,205 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-13 08:17:39,206 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 1 case distinctions, treesize of input 119 treesize of output 89 [2021-10-13 08:17:39,211 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 80 treesize of output 72 [2021-10-13 08:17:39,230 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-13 08:17:39,230 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 1 case distinctions, treesize of input 72 treesize of output 58 [2021-10-13 08:17:39,587 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 41 treesize of output 29 [2021-10-13 08:17:39,591 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 26 treesize of output 18 [2021-10-13 08:17:39,720 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 15 treesize of output 7 [2021-10-13 08:17:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:17:39,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:17:39,920 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 99 treesize of output 85 [2021-10-13 08:17:39,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:39,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-13 08:17:39,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:39,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:17:40,256 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 73 treesize of output 69 [2021-10-13 08:17:40,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:17:40,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:17:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:17:40,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [314973016] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:17:40,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:17:40,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 21 [2021-10-13 08:17:40,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173305463] [2021-10-13 08:17:40,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 08:17:40,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:17:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 08:17:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 08:17:40,970 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:17:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:17:46,676 INFO L93 Difference]: Finished difference Result 214 states and 220 transitions. [2021-10-13 08:17:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 08:17:46,677 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 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 25 [2021-10-13 08:17:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:17:46,678 INFO L225 Difference]: With dead ends: 214 [2021-10-13 08:17:46,679 INFO L226 Difference]: Without dead ends: 214 [2021-10-13 08:17:46,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 2751.3ms TimeCoverageRelationStatistics Valid=337, Invalid=1825, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 08:17:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-13 08:17:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 123. [2021-10-13 08:17:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.316831683168317) internal successors, (133), 122 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:17:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-13 08:17:46,686 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 25 [2021-10-13 08:17:46,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:17:46,686 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-13 08:17:46,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:17:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-13 08:17:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:17:46,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:17:46,688 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:17:46,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 08:17:46,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-13 08:17:47,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:17:47,104 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:17:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:17:47,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1799464038, now seen corresponding path program 1 times [2021-10-13 08:17:47,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:17:47,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260800712] [2021-10-13 08:17:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:17:47,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:17:47,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:17:47,106 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:17:47,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 08:17:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:17:47,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 08:17:47,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:17:47,494 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 [2021-10-13 08:17:47,531 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 [2021-10-13 08:17:47,625 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:17:47,625 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 17 treesize of output 17 [2021-10-13 08:17:47,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:17:47,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:17:47,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:17:47,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-10-13 08:17:47,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 08:17:48,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-10-13 08:17:48,145 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:17:48,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-13 08:17:48,255 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-10-13 08:17:48,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-10-13 08:17:48,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:17:48,409 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 29 treesize of output 21 [2021-10-13 08:17:49,170 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-10-13 08:17:49,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 50 [2021-10-13 08:17:49,679 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:17:49,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2021-10-13 08:17:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:17:49,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:17:50,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:17:50,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:18:10,720 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset) (_ bv1 32)) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_9)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_29|))))) is different from false [2021-10-13 08:18:12,892 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~x~0.offset) (_ bv1 32)) ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_9)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_29|))))) is different from false [2021-10-13 08:18:14,933 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_29|))) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) ULTIMATE.start_main_~x~0.offset) (_ bv1 32)) ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_9)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)))) is different from false [2021-10-13 08:18:16,989 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_80 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_29|))) (= (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (store |c_#memory_int| .cse1 (store (store (select |c_#memory_int| .cse1) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_80) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_80 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)))) is different from false [2021-10-13 08:18:17,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:18:17,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-13 08:18:17,095 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 08:18:17,095 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 94 treesize of output 93 [2021-10-13 08:18:19,153 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_80 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_10)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc5.base| (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc5.base|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_80) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_80 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|))) is different from false [2021-10-13 08:18:29,829 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc5.base_21| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_80 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= c_ULTIMATE.start_main_~head~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset v_DerPreprocessor_10)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc5.base_21| (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc5.base_21|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_80) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_80 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc5.base_21|)))))) is different from false [2021-10-13 08:18:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 08:18:34,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:18:34,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260800712] [2021-10-13 08:18:34,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260800712] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:18:34,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [445054565] [2021-10-13 08:18:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:18:34,156 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:18:34,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:18:34,162 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:18:34,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 08:18:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:18:34,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 08:18:34,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:18:34,649 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 [2021-10-13 08:18:34,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 08:18:34,735 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:18:34,735 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 [2021-10-13 08:18:34,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:18:34,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:18:34,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-10-13 08:18:34,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-10-13 08:18:34,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 08:18:35,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-10-13 08:18:35,122 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:18:35,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2021-10-13 08:18:35,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:18:35,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:18:35,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-10-13 08:18:35,225 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 29 treesize of output 21 [2021-10-13 08:18:35,889 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-10-13 08:18:35,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 50 [2021-10-13 08:18:36,180 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:18:36,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2021-10-13 08:18:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:18:36,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:18:36,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:18:36,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:19:01,024 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_85 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (store |c_#memory_int| .cse1 (store (store (select |c_#memory_int| .cse1) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_85) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_85 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_29|))))) is different from false [2021-10-13 08:19:01,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:19:01,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-13 08:19:01,114 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 08:19:01,114 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 94 treesize of output 93 [2021-10-13 08:19:03,168 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_85 (_ BitVec 32))) (or (= (_ bv0 32) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_12)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc5.base| (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc5.base|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_85) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_85 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32)))) (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|))) is different from false [2021-10-13 08:19:05,356 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc5.base_24| (_ BitVec 32))) (or (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_85 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_12)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc5.base_24| (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc5.base_24|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_85) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_85 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc5.base_24|)))))) is different from false [2021-10-13 08:19:07,589 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc5.base_24| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_85 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc5.base_24|)))) (= c_ULTIMATE.start_main_~head~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~head~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset v_DerPreprocessor_12)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc5.base_24| (store (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc5.base_24|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_85) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_85 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)))) is different from false [2021-10-13 08:19:07,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 08:19:07,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [445054565] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:19:07,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345040899] [2021-10-13 08:19:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:19:07,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:19:07,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:19:07,652 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:19:07,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 08:19:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:19:08,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 08:19:08,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:19:08,051 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 [2021-10-13 08:19:08,073 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 [2021-10-13 08:19:08,137 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:19:08,137 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 16 treesize of output 16 [2021-10-13 08:19:08,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:19:08,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 08:19:08,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:19:08,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-10-13 08:19:08,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 08:19:08,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-10-13 08:19:08,457 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:19:08,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-13 08:19:08,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:19:08,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:19:08,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-10-13 08:19:08,564 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 29 treesize of output 21 [2021-10-13 08:19:09,738 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-10-13 08:19:09,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 50 [2021-10-13 08:19:10,007 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-13 08:19:10,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2021-10-13 08:19:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:19:10,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:19:10,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:19:10,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:19:28,929 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_90 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (store |c_#memory_int| .cse1 (store (store (select |c_#memory_int| .cse1) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_90) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_90 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_29|))))) is different from false [2021-10-13 08:19:28,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:19:28,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-13 08:19:29,031 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 08:19:29,031 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 94 treesize of output 93 [2021-10-13 08:19:31,092 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_90 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_14)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc5.base| (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc5.base|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_90) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_90 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|))) is different from false [2021-10-13 08:19:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-13 08:19:43,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345040899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:19:43,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:19:43,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 37 [2021-10-13 08:19:43,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086896510] [2021-10-13 08:19:43,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-13 08:19:43,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:19:43,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 08:19:43,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=499, Unknown=23, NotChecked=684, Total=1332 [2021-10-13 08:19:43,926 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:19:46,404 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~head~0.base |c_ULTIMATE.start_main_#t~malloc5.base|)) (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_80 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_10)))) (store .cse1 |c_ULTIMATE.start_main_#t~malloc5.base| (store (store (select .cse1 |c_ULTIMATE.start_main_#t~malloc5.base|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_80) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_80 v_DerPreprocessor_9))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|))) (= c_ULTIMATE.start_main_~head~0.offset c_ULTIMATE.start_main_~x~0.offset) (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_85 (_ BitVec 32))) (or (= (_ bv0 32) (select (select (let ((.cse2 (let ((.cse3 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_12)))) (store .cse3 |c_ULTIMATE.start_main_#t~malloc5.base| (store (store (select .cse3 |c_ULTIMATE.start_main_#t~malloc5.base|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_85) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_85 v_DerPreprocessor_9))))) (store .cse2 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse2 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32)))) (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|))) (= c_ULTIMATE.start_main_~head~0.base c_ULTIMATE.start_main_~x~0.base) (= c_ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~head~0.base))) (_ bv1 1))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_90 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse4 (let ((.cse5 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_14)))) (store .cse5 |c_ULTIMATE.start_main_#t~malloc5.base| (store (store (select .cse5 |c_ULTIMATE.start_main_#t~malloc5.base|) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_90) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_90 v_DerPreprocessor_9))))) (store .cse4 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse4 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_29|)))) is different from false [2021-10-13 08:19:53,394 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start_main_~head~0.base c_ULTIMATE.start_main_~x~0.base)) (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset) (_ bv1 32)) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_9)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_29|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) (_ bv2 32)))) c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_29|))))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset)) (_ bv0 32)) (= c_ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~head~0.base))) (_ bv1 1))) (= (select (select |c_#memory_int| c_ULTIMATE.start_main_~head~0.base) (bvadd c_ULTIMATE.start_main_~head~0.offset (_ bv4 32))) (_ bv0 32))) is different from false [2021-10-13 08:20:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:20:01,950 INFO L93 Difference]: Finished difference Result 250 states and 264 transitions. [2021-10-13 08:20:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 08:20:01,951 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 08:20:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:20:01,953 INFO L225 Difference]: With dead ends: 250 [2021-10-13 08:20:01,953 INFO L226 Difference]: Without dead ends: 250 [2021-10-13 08:20:01,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 120832.8ms TimeCoverageRelationStatistics Valid=259, Invalid=1029, Unknown=28, NotChecked=1134, Total=2450 [2021-10-13 08:20:01,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-13 08:20:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 144. [2021-10-13 08:20:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.278688524590164) internal successors, (156), 143 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:20:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2021-10-13 08:20:01,960 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 28 [2021-10-13 08:20:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:20:01,960 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2021-10-13 08:20:01,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:20:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2021-10-13 08:20:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 08:20:01,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:20:01,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:20:01,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-13 08:20:02,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 08:20:02,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 08:20:02,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:20:02,577 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:20:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:20:02,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1566212066, now seen corresponding path program 1 times [2021-10-13 08:20:02,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:20:02,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135042754] [2021-10-13 08:20:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:20:02,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:20:02,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:20:02,580 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:20:02,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 08:20:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:20:03,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:20:03,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:20:03,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-13 08:20:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:20:03,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:20:03,387 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-10-13 08:20:03,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 15 [2021-10-13 08:20:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:20:03,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:20:03,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135042754] [2021-10-13 08:20:03,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135042754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:20:03,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:20:03,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-13 08:20:03,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942943336] [2021-10-13 08:20:03,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:20:03,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:20:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:20:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:20:03,455 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:20:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:20:04,620 INFO L93 Difference]: Finished difference Result 217 states and 223 transitions. [2021-10-13 08:20:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:20:04,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 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 31 [2021-10-13 08:20:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:20:04,622 INFO L225 Difference]: With dead ends: 217 [2021-10-13 08:20:04,622 INFO L226 Difference]: Without dead ends: 217 [2021-10-13 08:20:04,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 212.5ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 08:20:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-13 08:20:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 153. [2021-10-13 08:20:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 131 states have (on average 1.2900763358778626) internal successors, (169), 152 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:20:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2021-10-13 08:20:04,628 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 31 [2021-10-13 08:20:04,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:20:04,628 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2021-10-13 08:20:04,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:20:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2021-10-13 08:20:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 08:20:04,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:20:04,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:20:04,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 08:20:04,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:20:04,844 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-13 08:20:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:20:04,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1374098542, now seen corresponding path program 1 times [2021-10-13 08:20:04,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:20:04,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458680158] [2021-10-13 08:20:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:20:04,845 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:20:04,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:20:04,846 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:20:04,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 08:20:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:20:05,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 08:20:05,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:20:05,328 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 [2021-10-13 08:20:05,414 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:20:05,414 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 16 treesize of output 16 [2021-10-13 08:20:05,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:20:05,631 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:20:05,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2021-10-13 08:20:05,730 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:20:05,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2021-10-13 08:20:05,838 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:20:05,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-10-13 08:20:05,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 08:20:05,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-10-13 08:20:06,097 INFO L354 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2021-10-13 08:20:06,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 64 [2021-10-13 08:20:06,104 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 56 treesize of output 52 [2021-10-13 08:20:06,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:20:06,411 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:20:06,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 47 [2021-10-13 08:20:06,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-10-13 08:20:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:20:06,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:20:07,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-10-13 08:20:07,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:20:07,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-13 08:20:07,500 INFO L354 Elim1Store]: treesize reduction 5, result has 86.8 percent of original size [2021-10-13 08:20:07,500 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 63 treesize of output 62 [2021-10-13 08:20:09,596 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc7.base| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32))) (or (and (= c_ULTIMATE.start_main_~head~0.offset |c_ULTIMATE.start_main_#t~malloc7.offset|) (= c_ULTIMATE.start_main_~head~0.base |ULTIMATE.start_main_#t~malloc7.base|)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset |ULTIMATE.start_main_#t~malloc7.base|)))) (store .cse0 |ULTIMATE.start_main_#t~malloc7.base| (store (select .cse0 |ULTIMATE.start_main_#t~malloc7.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~malloc7.offset|) v_DerPreprocessor_15))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) c_ULTIMATE.start_main_~x~0.base))) is different from false [2021-10-13 08:20:11,675 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc7.base| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32))) (or (and (= c_ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= c_ULTIMATE.start_main_~head~0.base |ULTIMATE.start_main_#t~malloc7.base|)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset |ULTIMATE.start_main_#t~malloc7.base|)))) (store .cse0 |ULTIMATE.start_main_#t~malloc7.base| (store (select .cse0 |ULTIMATE.start_main_#t~malloc7.base|) (_ bv4 32) v_DerPreprocessor_15))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) c_ULTIMATE.start_main_~x~0.base))) is different from false [2021-10-13 08:20:11,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:20:11,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:20:13,777 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc7.base| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (and (= c_ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= c_ULTIMATE.start_main_~head~0.base |ULTIMATE.start_main_#t~malloc7.base|)) (= c_ULTIMATE.start_main_~x~0.base (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_16) c_ULTIMATE.start_main_~x~0.offset |ULTIMATE.start_main_#t~malloc7.base|)))) (store .cse0 |ULTIMATE.start_main_#t~malloc7.base| (store (select .cse0 |ULTIMATE.start_main_#t~malloc7.base|) (_ bv4 32) v_DerPreprocessor_15))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)))) is different from false [2021-10-13 08:20:14,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:20:14,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:20:16,137 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc7.base| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (and (= c_ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= c_ULTIMATE.start_main_~head~0.base |ULTIMATE.start_main_#t~malloc7.base|)) (= c_ULTIMATE.start_main_~x~0.base (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_16) ULTIMATE.start_main_~x~0.offset |ULTIMATE.start_main_#t~malloc7.base|)))) (store .cse0 |ULTIMATE.start_main_#t~malloc7.base| (store (select .cse0 |ULTIMATE.start_main_#t~malloc7.base|) (_ bv4 32) v_DerPreprocessor_15))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)))) is different from false [2021-10-13 08:20:18,235 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (|ULTIMATE.start_main_#t~malloc7.base| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (and (= c_ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= c_ULTIMATE.start_main_~head~0.base |ULTIMATE.start_main_#t~malloc7.base|)) (= |c_ULTIMATE.start_main_#t~mem6.base| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_16) ULTIMATE.start_main_~x~0.offset |ULTIMATE.start_main_#t~malloc7.base|)))) (store .cse0 |ULTIMATE.start_main_#t~malloc7.base| (store (select .cse0 |ULTIMATE.start_main_#t~malloc7.base|) (_ bv4 32) v_DerPreprocessor_15))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)))) is different from false [2021-10-13 08:20:20,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~malloc7.base| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_99 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (and (= c_ULTIMATE.start_main_~head~0.offset (_ bv0 32)) (= c_ULTIMATE.start_main_~head~0.base |ULTIMATE.start_main_#t~malloc7.base|)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse1 (store (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_99) v_DerPreprocessor_16) v_ULTIMATE.start_main_~x~0.offset_99 |ULTIMATE.start_main_#t~malloc7.base|)))) (store .cse0 |ULTIMATE.start_main_#t~malloc7.base| (store (select .cse0 |ULTIMATE.start_main_#t~malloc7.base|) (_ bv4 32) v_DerPreprocessor_15))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) .cse1)))) is different from false [2021-10-13 08:20:20,419 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 2749 treesize of output 2717 [2021-10-13 08:20:20,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:20:20,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458680158] [2021-10-13 08:20:20,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:20:20,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [57604011] [2021-10-13 08:20:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:20:20,517 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:20:20,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:20:20,519 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:20:20,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-13 08:20:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:20:21,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 08:20:21,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:20:21,175 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 [2021-10-13 08:20:21,234 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:20:21,234 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 17 treesize of output 17 [2021-10-13 08:20:21,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:20:21,565 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:20:21,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2021-10-13 08:20:21,660 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:20:21,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2021-10-13 08:20:21,702 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:20:21,702 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 19 treesize of output 19 [2021-10-13 08:20:21,814 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:20:21,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2021-10-13 08:20:23,964 INFO L354 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-10-13 08:20:23,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 64 [2021-10-13 08:20:24,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-10-13 08:20:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:20:24,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:20:24,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:20:24,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-13 08:20:42,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)))))))) (_ bv1 1)))) is different from false [2021-10-13 08:20:42,740 INFO L354 Elim1Store]: treesize reduction 5, result has 86.8 percent of original size [2021-10-13 08:20:42,740 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 55 treesize of output 54 [2021-10-13 08:21:20,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:21:20,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 08:21:22,242 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_40| (_ BitVec 32))) (or (= c_ULTIMATE.start_main_~x~0.base (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_19) c_ULTIMATE.start_main_~x~0.offset |v_ULTIMATE.start_main_#t~malloc7.base_40|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_40| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_40|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_40|))))) is different from false [2021-10-13 08:21:22,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:21:22,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-13 08:21:24,391 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (v_DerPreprocessor_19 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_40| (_ BitVec 32))) (or (= c_ULTIMATE.start_main_~x~0.base (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_19) ULTIMATE.start_main_~x~0.offset |v_ULTIMATE.start_main_#t~malloc7.base_40|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_40| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_40|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_40|))))) is different from false [2021-10-13 08:21:26,442 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (v_DerPreprocessor_19 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_40| (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_19) ULTIMATE.start_main_~x~0.offset |v_ULTIMATE.start_main_#t~malloc7.base_40|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_40| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_40|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) |c_ULTIMATE.start_main_#t~mem6.base|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_40|))))) is different from false [2021-10-13 08:21:28,489 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_103 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_40| (_ BitVec 32))) (or (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse1 (store (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_103) v_DerPreprocessor_19) v_ULTIMATE.start_main_~x~0.offset_103 |v_ULTIMATE.start_main_#t~malloc7.base_40|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_40| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_40|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) .cse1)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_40|))))) is different from false [2021-10-13 08:21:28,571 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 2982 treesize of output 2950 [2021-10-13 08:21:28,710 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 08:21:28,710 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 2878 treesize of output 2877 [2021-10-13 08:21:28,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:21:28,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194226472] [2021-10-13 08:21:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:21:28,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:21:28,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:21:28,751 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:21:28,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 08:21:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:21:29,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 08:21:29,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:21:29,305 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 [2021-10-13 08:21:31,514 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:21:31,514 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 [2021-10-13 08:21:31,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 08:21:32,019 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:21:32,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2021-10-13 08:21:32,194 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-13 08:21:32,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2021-10-13 08:21:32,235 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:21:32,235 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 [2021-10-13 08:21:32,390 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:21:32,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2021-10-13 08:21:33,829 INFO L354 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-10-13 08:21:33,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 65 [2021-10-13 08:21:34,150 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 32 treesize of output 20 [2021-10-13 08:21:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:21:34,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:21:34,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:21:34,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 08:21:40,780 INFO L354 Elim1Store]: treesize reduction 5, result has 86.8 percent of original size [2021-10-13 08:21:40,780 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 55 treesize of output 54 [2021-10-13 08:21:42,822 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_42| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_42|))))) (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (= c_ULTIMATE.start_main_~x~0.base (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset |v_ULTIMATE.start_main_#t~malloc7.base_42|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset))))) is different from false [2021-10-13 08:21:42,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:21:42,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 08:21:44,889 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_42| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_42|))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_22) c_ULTIMATE.start_main_~x~0.offset |v_ULTIMATE.start_main_#t~malloc7.base_42|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) c_ULTIMATE.start_main_~x~0.base))) is different from false [2021-10-13 08:21:45,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:21:45,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-13 08:21:47,060 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_42| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_42|))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) (bvadd (_ bv4 32) ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_22) ULTIMATE.start_main_~x~0.offset |v_ULTIMATE.start_main_#t~malloc7.base_42|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) c_ULTIMATE.start_main_~x~0.base))) is different from false [2021-10-13 08:21:49,108 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_42| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_#t~mem6.base| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) ULTIMATE.start_main_~x~0.offset) v_DerPreprocessor_22) ULTIMATE.start_main_~x~0.offset |v_ULTIMATE.start_main_#t~malloc7.base_42|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_42|))))))) is different from false [2021-10-13 08:21:51,156 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_107 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_42| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_42|))))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse1 (store (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_107) v_DerPreprocessor_22) v_ULTIMATE.start_main_~x~0.offset_107 |v_ULTIMATE.start_main_#t~malloc7.base_42|)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_42|) (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)) v_DerPreprocessor_18))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) .cse1)))) is different from false [2021-10-13 08:21:51,213 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 3128 treesize of output 3096 [2021-10-13 08:21:51,324 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 08:21:51,324 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 3024 treesize of output 3023 [2021-10-13 08:21:51,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:21:51,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:21:51,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 08:21:51,355 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 08:21:51,355 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 08:21:51,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-13 08:21:51,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 08:21:51,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 08:21:51,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 08:21:51,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 08:21:51,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 08:21:51,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 08:21:51,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 08:21:51,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 08:21:51,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 08:21:51,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 08:21:51,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:21:51,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 08:21:51,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 08:21:51,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 08:21:51,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 08:21:51,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 08:21:51,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 08:21:51,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 08:21:51,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 08:21:51,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:21:51,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-13 08:21:51,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-13 08:21:51,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-13 08:21:51,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-13 08:21:51,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:21:51,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-13 08:21:51,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-13 08:21:51,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-13 08:21:51,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-13 08:21:51,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:21:51,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-13 08:21:51,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-13 08:21:51,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-13 08:21:51,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:21:51,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-13 08:21:51,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-13 08:21:51,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-13 08:21:51,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-13 08:21:51,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-13 08:21:51,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-13 08:21:51,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:21:51,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-13 08:21:51,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-13 08:21:51,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:21:51,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:21:51,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 08:21:51,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 08:21:51,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-13 08:21:51,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:21:51,998 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:21:52,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:21:52 BoogieIcfgContainer [2021-10-13 08:21:52,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:21:52,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:21:52,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:21:52,013 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:21:52,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:16:00" (3/4) ... [2021-10-13 08:21:52,016 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 08:21:52,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:21:52,017 INFO L168 Benchmark]: Toolchain (without parser) took 353381.03 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 60.9 MB in the beginning and 36.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:21:52,017 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 57.9 MB in the beginning and 57.9 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:21:52,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.85 ms. Allocated memory is still 75.5 MB. Free memory was 60.7 MB in the beginning and 42.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:21:52,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.60 ms. Allocated memory is still 75.5 MB. Free memory was 42.3 MB in the beginning and 40.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:21:52,019 INFO L168 Benchmark]: Boogie Preprocessor took 40.25 ms. Allocated memory is still 75.5 MB. Free memory was 40.0 MB in the beginning and 38.1 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:21:52,019 INFO L168 Benchmark]: RCFGBuilder took 819.71 ms. Allocated memory is still 75.5 MB. Free memory was 38.1 MB in the beginning and 43.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:21:52,019 INFO L168 Benchmark]: TraceAbstraction took 351873.74 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.0 MB in the beginning and 37.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:21:52,020 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 92.3 MB. Free memory was 37.2 MB in the beginning and 36.5 MB in the end (delta: 710.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:21:52,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 57.9 MB in the beginning and 57.9 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.85 ms. Allocated memory is still 75.5 MB. Free memory was 60.7 MB in the beginning and 42.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.60 ms. Allocated memory is still 75.5 MB. Free memory was 42.3 MB in the beginning and 40.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.25 ms. Allocated memory is still 75.5 MB. Free memory was 40.0 MB in the beginning and 38.1 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 819.71 ms. Allocated memory is still 75.5 MB. Free memory was 38.1 MB in the beginning and 43.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 351873.74 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 43.0 MB in the beginning and 37.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.16 ms. Allocated memory is still 92.3 MB. Free memory was 37.2 MB in the beginning and 36.5 MB in the end (delta: 710.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) [L1005] head->data = 0 [L1007] SLL* x = head; [L1010] COND TRUE __VERIFIER_nondet_int() [L1013] x->next = malloc(sizeof(SLL)) [L1014] EXPR x->next [L1014] x = x->next [L1015] x->data = 0 [L1016] COND FALSE !(!(((void*)0) != x)) [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 [L1019] x->next = malloc(sizeof(SLL)) [L1020] EXPR x->next [L1020] x->next->data = 2 [L1022] x = head [L1024] COND FALSE !(!(((void*)0) != x)) [L1026] EXPR x->data [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data [L1031] COND FALSE !(!(1 == x->data)) [L1032] EXPR x->next [L1032] x = x->next [L1033] x->data - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1013]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1037]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 118 locations, 54 error locations. Started 1 CEGAR loops. OverallTime: 351777.7ms, OverallIterations: 18, TraceHistogramMax: 1, EmptinessCheckTime: 45.5ms, AutomataDifference: 51871.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1067 SDtfs, 3288 SDslu, 4051 SDs, 0 SdLazy, 4982 SolverSat, 447 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 19306.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 464 SyntacticMatches, 19 SemanticMatches, 251 ConstructedPredicates, 16 IntricatePredicates, 1 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 187119.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=17, InterpolantAutomatonStates: 176, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 187.9ms AutomataMinimizationTime, 17 MinimizatonAttempts, 668 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 163.8ms SsaConstructionTime, 1035.9ms SatisfiabilityAnalysisTime, 182162.2ms InterpolantComputationTime, 320 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 602 ConstructedInterpolants, 114 QuantifiedInterpolants, 10406 SizeOfPredicates, 154 NumberOfNonLiveVariables, 1559 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 38 InterpolantComputations, 32 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 08:21:52,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d1c6d88-ad56-46db-ad80-a9b908b68786/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...