./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs --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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs --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-5709675 [2021-10-16 02:08:45,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:45,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:45,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:45,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:45,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:45,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:45,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:45,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:45,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:45,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:45,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:45,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:45,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:45,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:45,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:45,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:45,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:45,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:45,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:45,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:45,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:45,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:45,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:45,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:45,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:45,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:45,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:45,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:45,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:45,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:45,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:45,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:45,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:45,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:45,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:45,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:45,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:45,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:45,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:45,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:45,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:08:45,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:45,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:45,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:45,575 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:45,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:45,575 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:45,576 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:08:45,576 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:45,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:45,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:08:45,577 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:08:45,577 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:45,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:08:45,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:08:45,578 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:08:45,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:08:45,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:08:45,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:45,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:45,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:08:45,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:08:45,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:45,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:45,581 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:08:45,581 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:08:45,581 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:08:45,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:45,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:45,582 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:45,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:45,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:45,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:45,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:45,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:45,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:45,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:08:45,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:08:45,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:45,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:45,585 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6961864fd80b1152371f3ae9fd5697ae273a1dc [2021-10-16 02:08:45,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:45,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:45,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:45,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:45,891 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:45,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/forester-heap/sll-token-2.i [2021-10-16 02:08:45,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data/a1bfb12b9/da309ccb5b984cd58337185aa21e096b/FLAG9508eec36 [2021-10-16 02:08:46,622 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:46,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i [2021-10-16 02:08:46,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data/a1bfb12b9/da309ccb5b984cd58337185aa21e096b/FLAG9508eec36 [2021-10-16 02:08:46,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data/a1bfb12b9/da309ccb5b984cd58337185aa21e096b [2021-10-16 02:08:46,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:46,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:46,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:46,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:46,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:46,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:46" (1/1) ... [2021-10-16 02:08:46,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68be3795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:46, skipping insertion in model container [2021-10-16 02:08:46,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:46" (1/1) ... [2021-10-16 02:08:46,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:47,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:47,502 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2021-10-16 02:08:47,518 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2021-10-16 02:08:47,520 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2021-10-16 02:08:47,522 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2021-10-16 02:08:47,524 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2021-10-16 02:08:47,527 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2021-10-16 02:08:47,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:47,550 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:08:47,621 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2021-10-16 02:08:47,624 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2021-10-16 02:08:47,627 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2021-10-16 02:08:47,632 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2021-10-16 02:08:47,636 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2021-10-16 02:08:47,642 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2021-10-16 02:08:47,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:47,687 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:08:47,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47 WrapperNode [2021-10-16 02:08:47,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:47,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:47,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:08:47,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:08:47,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:47,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:08:47,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:08:47,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:08:47,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:08:47,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:08:47,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:08:47,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:08:47,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (1/1) ... [2021-10-16 02:08:47,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:47,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:47,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:08:47,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:08:47,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:08:47,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:08:47,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:08:47,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:08:47,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:08:47,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:08:47,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:08:47,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:08:47,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:08:47,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:08:48,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:08:48,742 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-16 02:08:48,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:48 BoogieIcfgContainer [2021-10-16 02:08:48,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:08:48,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:08:48,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:08:48,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:08:48,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:08:46" (1/3) ... [2021-10-16 02:08:48,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f381f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:48, skipping insertion in model container [2021-10-16 02:08:48,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:47" (2/3) ... [2021-10-16 02:08:48,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f381f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:48, skipping insertion in model container [2021-10-16 02:08:48,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:48" (3/3) ... [2021-10-16 02:08:48,757 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2021-10-16 02:08:48,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:08:48,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-10-16 02:08:48,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:08:48,826 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 [2021-10-16 02:08:48,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-10-16 02:08:48,855 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) [2021-10-16 02:08:48,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:08:48,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:48,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:08:48,864 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:48,875 INFO L82 PathProgramCache]: Analyzing trace with hash 8405, now seen corresponding path program 1 times [2021-10-16 02:08:48,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:48,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838501248] [2021-10-16 02:08:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:48,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:49,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:49,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838501248] [2021-10-16 02:08:49,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838501248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:49,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:49,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:08:49,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033402970] [2021-10-16 02:08:49,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:49,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:49,107 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) [2021-10-16 02:08:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:49,254 INFO L93 Difference]: Finished difference Result 126 states and 129 transitions. [2021-10-16 02:08:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:49,256 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 [2021-10-16 02:08:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:49,267 INFO L225 Difference]: With dead ends: 126 [2021-10-16 02:08:49,267 INFO L226 Difference]: Without dead ends: 125 [2021-10-16 02:08:49,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:49,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-16 02:08:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 105. [2021-10-16 02:08:49,321 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) [2021-10-16 02:08:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2021-10-16 02:08:49,330 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 2 [2021-10-16 02:08:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:49,332 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2021-10-16 02:08:49,332 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) [2021-10-16 02:08:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2021-10-16 02:08:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:08:49,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:49,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:08:49,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:08:49,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:49,340 INFO L82 PathProgramCache]: Analyzing trace with hash 8406, now seen corresponding path program 1 times [2021-10-16 02:08:49,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:49,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797776403] [2021-10-16 02:08:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:49,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:49,445 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:49,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797776403] [2021-10-16 02:08:49,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797776403] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:49,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:49,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:08:49,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38357983] [2021-10-16 02:08:49,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:49,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:49,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:49,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:49,449 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) [2021-10-16 02:08:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:49,556 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2021-10-16 02:08:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:49,557 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 [2021-10-16 02:08:49,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:49,559 INFO L225 Difference]: With dead ends: 131 [2021-10-16 02:08:49,559 INFO L226 Difference]: Without dead ends: 131 [2021-10-16 02:08:49,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-16 02:08:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 103. [2021-10-16 02:08:49,570 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) [2021-10-16 02:08:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2021-10-16 02:08:49,572 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 2 [2021-10-16 02:08:49,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:49,573 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2021-10-16 02:08:49,573 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) [2021-10-16 02:08:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2021-10-16 02:08:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:08:49,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:49,574 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:08:49,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:08:49,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:49,576 INFO L82 PathProgramCache]: Analyzing trace with hash -821381070, now seen corresponding path program 1 times [2021-10-16 02:08:49,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:49,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858901589] [2021-10-16 02:08:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:49,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:49,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:49,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858901589] [2021-10-16 02:08:49,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858901589] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:49,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:49,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:49,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315230756] [2021-10-16 02:08:49,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:49,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:49,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:49,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:49,645 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) [2021-10-16 02:08:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:49,900 INFO L93 Difference]: Finished difference Result 109 states and 112 transitions. [2021-10-16 02:08:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:49,901 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 [2021-10-16 02:08:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:49,902 INFO L225 Difference]: With dead ends: 109 [2021-10-16 02:08:49,902 INFO L226 Difference]: Without dead ends: 109 [2021-10-16 02:08:49,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-16 02:08:49,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 92. [2021-10-16 02:08:49,911 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) [2021-10-16 02:08:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-10-16 02:08:49,912 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 6 [2021-10-16 02:08:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:49,913 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-10-16 02:08:49,913 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) [2021-10-16 02:08:49,914 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-10-16 02:08:49,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:08:49,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:49,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:08:49,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:08:49,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:49,916 INFO L82 PathProgramCache]: Analyzing trace with hash -821381069, now seen corresponding path program 1 times [2021-10-16 02:08:49,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:49,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977938136] [2021-10-16 02:08:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:49,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:49,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:49,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977938136] [2021-10-16 02:08:49,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977938136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:49,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:49,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:08:49,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306404054] [2021-10-16 02:08:49,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:49,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:49,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:49,987 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) [2021-10-16 02:08:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:50,198 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2021-10-16 02:08:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:08:50,199 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 [2021-10-16 02:08:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:50,205 INFO L225 Difference]: With dead ends: 166 [2021-10-16 02:08:50,206 INFO L226 Difference]: Without dead ends: 166 [2021-10-16 02:08:50,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-16 02:08:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 119. [2021-10-16 02:08:50,223 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) [2021-10-16 02:08:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2021-10-16 02:08:50,228 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 6 [2021-10-16 02:08:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:50,228 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2021-10-16 02:08:50,229 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) [2021-10-16 02:08:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2021-10-16 02:08:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:08:50,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:50,230 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:50,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:08:50,231 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash 927018906, now seen corresponding path program 1 times [2021-10-16 02:08:50,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:50,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338986530] [2021-10-16 02:08:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:50,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:50,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:50,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338986530] [2021-10-16 02:08:50,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338986530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:50,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:50,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:08:50,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450456361] [2021-10-16 02:08:50,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:50,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:50,382 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) [2021-10-16 02:08:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:50,557 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2021-10-16 02:08:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:50,558 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 [2021-10-16 02:08:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:50,559 INFO L225 Difference]: With dead ends: 118 [2021-10-16 02:08:50,559 INFO L226 Difference]: Without dead ends: 118 [2021-10-16 02:08:50,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-16 02:08:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-16 02:08:50,567 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) [2021-10-16 02:08:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2021-10-16 02:08:50,568 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 8 [2021-10-16 02:08:50,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:50,568 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2021-10-16 02:08:50,568 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) [2021-10-16 02:08:50,569 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2021-10-16 02:08:50,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:08:50,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:50,569 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:50,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:08:50,570 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:50,580 INFO L82 PathProgramCache]: Analyzing trace with hash 927018907, now seen corresponding path program 1 times [2021-10-16 02:08:50,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:50,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821066029] [2021-10-16 02:08:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:50,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:50,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:50,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821066029] [2021-10-16 02:08:50,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821066029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:50,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:50,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:08:50,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514621128] [2021-10-16 02:08:50,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:50,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:50,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:50,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:50,673 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) [2021-10-16 02:08:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:50,888 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2021-10-16 02:08:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:08:50,889 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 [2021-10-16 02:08:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:50,890 INFO L225 Difference]: With dead ends: 115 [2021-10-16 02:08:50,890 INFO L226 Difference]: Without dead ends: 115 [2021-10-16 02:08:50,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-16 02:08:50,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2021-10-16 02:08:50,897 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) [2021-10-16 02:08:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2021-10-16 02:08:50,898 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 8 [2021-10-16 02:08:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:50,899 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2021-10-16 02:08:50,899 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) [2021-10-16 02:08:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2021-10-16 02:08:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:08:50,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:50,900 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:50,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:08:50,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:50,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1329117493, now seen corresponding path program 1 times [2021-10-16 02:08:50,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:50,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644930347] [2021-10-16 02:08:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:50,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:51,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:51,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644930347] [2021-10-16 02:08:51,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644930347] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:51,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:51,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:08:51,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272208699] [2021-10-16 02:08:51,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:51,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:51,028 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) [2021-10-16 02:08:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:51,148 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2021-10-16 02:08:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:51,150 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 [2021-10-16 02:08:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:51,152 INFO L225 Difference]: With dead ends: 104 [2021-10-16 02:08:51,152 INFO L226 Difference]: Without dead ends: 104 [2021-10-16 02:08:51,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:08:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-16 02:08:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-16 02:08:51,167 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) [2021-10-16 02:08:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2021-10-16 02:08:51,168 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 9 [2021-10-16 02:08:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:51,169 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2021-10-16 02:08:51,169 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) [2021-10-16 02:08:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2021-10-16 02:08:51,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:08:51,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:51,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:51,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:08:51,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:51,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1329117492, now seen corresponding path program 1 times [2021-10-16 02:08:51,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:51,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522708198] [2021-10-16 02:08:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:51,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:51,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:51,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522708198] [2021-10-16 02:08:51,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522708198] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:51,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:51,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:08:51,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753897351] [2021-10-16 02:08:51,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:51,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:51,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:51,324 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) [2021-10-16 02:08:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:51,438 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-10-16 02:08:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:51,439 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 [2021-10-16 02:08:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:51,440 INFO L225 Difference]: With dead ends: 103 [2021-10-16 02:08:51,440 INFO L226 Difference]: Without dead ends: 103 [2021-10-16 02:08:51,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:08:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-16 02:08:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-16 02:08:51,445 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) [2021-10-16 02:08:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-10-16 02:08:51,446 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 9 [2021-10-16 02:08:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:51,446 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-10-16 02:08:51,447 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) [2021-10-16 02:08:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-10-16 02:08:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:08:51,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:51,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:51,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:08:51,449 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)] === [2021-10-16 02:08:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:51,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1806938586, now seen corresponding path program 1 times [2021-10-16 02:08:51,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:51,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119982973] [2021-10-16 02:08:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:51,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:51,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:51,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119982973] [2021-10-16 02:08:51,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119982973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:51,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:51,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:08:51,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808153115] [2021-10-16 02:08:51,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:51,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:51,535 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) [2021-10-16 02:08:51,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:51,668 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2021-10-16 02:08:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:08:51,669 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 [2021-10-16 02:08:51,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:51,670 INFO L225 Difference]: With dead ends: 109 [2021-10-16 02:08:51,670 INFO L226 Difference]: Without dead ends: 109 [2021-10-16 02:08:51,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-16 02:08:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2021-10-16 02:08:51,673 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) [2021-10-16 02:08:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-10-16 02:08:51,673 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 10 [2021-10-16 02:08:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:51,674 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-10-16 02:08:51,674 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) [2021-10-16 02:08:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-10-16 02:08:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:08:51,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:51,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:51,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:08:51,676 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)] === [2021-10-16 02:08:51,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:51,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1676451459, now seen corresponding path program 1 times [2021-10-16 02:08:51,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:51,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030475413] [2021-10-16 02:08:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:51,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:51,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:51,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030475413] [2021-10-16 02:08:51,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030475413] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:51,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:51,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:51,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754563626] [2021-10-16 02:08:51,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:51,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:51,727 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) [2021-10-16 02:08:51,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:51,831 INFO L93 Difference]: Finished difference Result 150 states and 155 transitions. [2021-10-16 02:08:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:51,832 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 [2021-10-16 02:08:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:51,833 INFO L225 Difference]: With dead ends: 150 [2021-10-16 02:08:51,834 INFO L226 Difference]: Without dead ends: 150 [2021-10-16 02:08:51,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:51,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-16 02:08:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 99. [2021-10-16 02:08:51,839 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) [2021-10-16 02:08:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2021-10-16 02:08:51,840 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 11 [2021-10-16 02:08:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:51,841 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2021-10-16 02:08:51,841 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) [2021-10-16 02:08:51,841 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2021-10-16 02:08:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:08:51,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:51,842 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:51,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:08:51,843 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)] === [2021-10-16 02:08:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash 935207482, now seen corresponding path program 1 times [2021-10-16 02:08:51,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:51,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090332197] [2021-10-16 02:08:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:51,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:51,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:51,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090332197] [2021-10-16 02:08:51,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090332197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:51,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:51,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:08:51,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302289504] [2021-10-16 02:08:51,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:08:51,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:51,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:08:51,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:51,894 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) [2021-10-16 02:08:52,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:52,003 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2021-10-16 02:08:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:52,004 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 [2021-10-16 02:08:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:52,005 INFO L225 Difference]: With dead ends: 97 [2021-10-16 02:08:52,006 INFO L226 Difference]: Without dead ends: 97 [2021-10-16 02:08:52,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:08:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-16 02:08:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-16 02:08:52,009 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) [2021-10-16 02:08:52,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-10-16 02:08:52,010 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 16 [2021-10-16 02:08:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:52,010 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-10-16 02:08:52,011 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) [2021-10-16 02:08:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-10-16 02:08:52,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:08:52,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:52,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:52,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 02:08:52,012 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)] === [2021-10-16 02:08:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:52,013 INFO L82 PathProgramCache]: Analyzing trace with hash 935240253, now seen corresponding path program 1 times [2021-10-16 02:08:52,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:52,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27331623] [2021-10-16 02:08:52,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:52,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:52,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:52,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27331623] [2021-10-16 02:08:52,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27331623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:52,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:52,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-16 02:08:52,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234142656] [2021-10-16 02:08:52,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:08:52,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:08:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:08:52,330 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) [2021-10-16 02:08:52,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:52,625 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2021-10-16 02:08:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:08:52,625 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 [2021-10-16 02:08:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:52,627 INFO L225 Difference]: With dead ends: 126 [2021-10-16 02:08:52,627 INFO L226 Difference]: Without dead ends: 126 [2021-10-16 02:08:52,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:08:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-16 02:08:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 107. [2021-10-16 02:08:52,631 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) [2021-10-16 02:08:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2021-10-16 02:08:52,632 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 16 [2021-10-16 02:08:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:52,633 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2021-10-16 02:08:52,633 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) [2021-10-16 02:08:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2021-10-16 02:08:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:08:52,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:52,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:52,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-16 02:08:52,635 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:52,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1086358635, now seen corresponding path program 1 times [2021-10-16 02:08:52,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:52,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338389497] [2021-10-16 02:08:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:52,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:52,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:52,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338389497] [2021-10-16 02:08:52,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338389497] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:52,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:52,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:08:52,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920134857] [2021-10-16 02:08:52,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:08:52,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:08:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:08:52,757 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) [2021-10-16 02:08:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:53,069 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2021-10-16 02:08:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:08:53,070 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 [2021-10-16 02:08:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:53,071 INFO L225 Difference]: With dead ends: 128 [2021-10-16 02:08:53,071 INFO L226 Difference]: Without dead ends: 128 [2021-10-16 02:08:53,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:08:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-16 02:08:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2021-10-16 02:08:53,075 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) [2021-10-16 02:08:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2021-10-16 02:08:53,075 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 18 [2021-10-16 02:08:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:53,076 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-10-16 02:08:53,076 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) [2021-10-16 02:08:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2021-10-16 02:08:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:08:53,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:53,077 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:53,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-16 02:08:53,078 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:08:53,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:53,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1086358636, now seen corresponding path program 1 times [2021-10-16 02:08:53,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:53,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800300161] [2021-10-16 02:08:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:53,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:53,266 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:53,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800300161] [2021-10-16 02:08:53,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800300161] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:53,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:53,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 02:08:53,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399789459] [2021-10-16 02:08:53,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:08:53,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:08:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:08:53,270 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) [2021-10-16 02:08:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:53,573 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2021-10-16 02:08:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:08:53,573 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 [2021-10-16 02:08:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:53,575 INFO L225 Difference]: With dead ends: 132 [2021-10-16 02:08:53,575 INFO L226 Difference]: Without dead ends: 132 [2021-10-16 02:08:53,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:08:53,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-16 02:08:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2021-10-16 02:08:53,578 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) [2021-10-16 02:08:53,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2021-10-16 02:08:53,579 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 18 [2021-10-16 02:08:53,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:53,580 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2021-10-16 02:08:53,580 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) [2021-10-16 02:08:53,580 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2021-10-16 02:08:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:08:53,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:53,581 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] [2021-10-16 02:08:53,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-16 02:08:53,581 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)] === [2021-10-16 02:08:53,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:53,582 INFO L82 PathProgramCache]: Analyzing trace with hash 313599339, now seen corresponding path program 1 times [2021-10-16 02:08:53,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:53,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729387898] [2021-10-16 02:08:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:53,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:53,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:53,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729387898] [2021-10-16 02:08:53,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729387898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:53,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:53,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-16 02:08:53,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716051284] [2021-10-16 02:08:53,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:08:53,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:08:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:08:53,865 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) [2021-10-16 02:08:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:54,184 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2021-10-16 02:08:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:08:54,185 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 [2021-10-16 02:08:54,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:54,186 INFO L225 Difference]: With dead ends: 130 [2021-10-16 02:08:54,186 INFO L226 Difference]: Without dead ends: 130 [2021-10-16 02:08:54,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 159.6ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:08:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-16 02:08:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 113. [2021-10-16 02:08:54,190 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) [2021-10-16 02:08:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2021-10-16 02:08:54,190 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 20 [2021-10-16 02:08:54,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:54,191 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2021-10-16 02:08:54,191 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) [2021-10-16 02:08:54,191 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2021-10-16 02:08:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:08:54,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:54,192 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] [2021-10-16 02:08:54,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-16 02:08:54,196 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)] === [2021-10-16 02:08:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:54,197 INFO L82 PathProgramCache]: Analyzing trace with hash -867293792, now seen corresponding path program 1 times [2021-10-16 02:08:54,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:54,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726007709] [2021-10-16 02:08:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:54,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:54,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:54,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726007709] [2021-10-16 02:08:54,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726007709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:08:54,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794512812] [2021-10-16 02:08:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:54,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:54,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:54,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:08:54,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:08:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:54,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-16 02:08:54,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:54,791 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-16 02:08:54,793 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 [2021-10-16 02:08:55,358 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 [2021-10-16 02:08:55,719 INFO L354 Elim1Store]: treesize reduction 44, result has 45.7 percent of original size [2021-10-16 02:08:55,719 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 [2021-10-16 02:08:55,891 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 [2021-10-16 02:08:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:08:55,907 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 [2021-10-16 02:08:55,981 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 [2021-10-16 02:08:56,047 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 [2021-10-16 02:08:56,242 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:08:56,243 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 [2021-10-16 02:08:56,253 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 [2021-10-16 02:08:56,344 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 [2021-10-16 02:08:56,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:08:56,355 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 [2021-10-16 02:08:56,423 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 [2021-10-16 02:08:56,577 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-10-16 02:08:56,578 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 [2021-10-16 02:08:56,862 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 02:08:56,862 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 [2021-10-16 02:08:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:56,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:01,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:01,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:09:02,443 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 [2021-10-16 02:09:08,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:08,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-16 02:09:08,888 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:09:08,888 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 [2021-10-16 02:09:10,937 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 [2021-10-16 02:09:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:21,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794512812] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:09:21,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [276418704] [2021-10-16 02:09:21,792 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-10-16 02:09:21,792 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:09:21,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:09:21,803 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:09:21,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:09:21,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,850 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:09:21,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:09:21,852 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:09:21,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-16 02:09:21,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-16 02:09:21,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:21,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:21,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:21,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:21,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:21,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:21,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:21,933 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-16 02:09:21,933 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 [2021-10-16 02:09:21,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:09:21,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-16 02:09:21,940 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:09:21,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:09:21,952 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:21,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-10-16 02:09:21,956 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:09:21,957 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:128, output treesize:112 [2021-10-16 02:09:22,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:22,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-16 02:09:22,185 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) [2021-10-16 02:09:22,191 INFO L168 Benchmark]: Toolchain (without parser) took 35247.54 ms. Allocated memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: 62.9 MB). Free memory was 65.6 MB in the beginning and 114.2 MB in the end (delta: -48.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:22,192 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory was 54.5 MB in the beginning and 54.4 MB in the end (delta: 100.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:09:22,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.82 ms. Allocated memory is still 98.6 MB. Free memory was 65.4 MB in the beginning and 66.3 MB in the end (delta: -974.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:22,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.43 ms. Allocated memory is still 98.6 MB. Free memory was 66.3 MB in the beginning and 64.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:22,193 INFO L168 Benchmark]: Boogie Preprocessor took 74.33 ms. Allocated memory is still 98.6 MB. Free memory was 64.5 MB in the beginning and 62.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:22,194 INFO L168 Benchmark]: RCFGBuilder took 880.06 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 62.8 MB in the beginning and 105.3 MB in the end (delta: -42.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:22,194 INFO L168 Benchmark]: TraceAbstraction took 33441.70 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 105.3 MB in the beginning and 114.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:22,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory was 54.5 MB in the beginning and 54.4 MB in the end (delta: 100.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 744.82 ms. Allocated memory is still 98.6 MB. Free memory was 65.4 MB in the beginning and 66.3 MB in the end (delta: -974.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.43 ms. Allocated memory is still 98.6 MB. Free memory was 66.3 MB in the beginning and 64.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.33 ms. Allocated memory is still 98.6 MB. Free memory was 64.5 MB in the beginning and 62.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 880.06 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 62.8 MB in the beginning and 105.3 MB in the end (delta: -42.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 33441.70 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 105.3 MB in the beginning and 114.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 19.7 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. [2021-10-16 02:09:22,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:09:25,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:09:25,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:09:25,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:09:25,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:09:25,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:09:25,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:09:25,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:09:25,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:09:25,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:09:25,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:09:25,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:09:25,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:09:25,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:09:25,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:09:25,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:09:25,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:09:25,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:09:25,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:09:25,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:09:25,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:09:25,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:09:25,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:09:25,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:09:25,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:09:25,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:09:25,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:09:25,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:09:25,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:09:25,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:09:25,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:09:25,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:09:25,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:09:25,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:09:25,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:09:25,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:09:25,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:09:25,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:09:25,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:09:25,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:09:25,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:09:25,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 02:09:25,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:09:25,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:09:25,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:09:25,310 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:09:25,310 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:09:25,311 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:09:25,311 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:09:25,311 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:09:25,312 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:09:25,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:09:25,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:09:25,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:09:25,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:09:25,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:09:25,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:09:25,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:09:25,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:09:25,315 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:09:25,315 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:09:25,315 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:09:25,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:09:25,316 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:09:25,316 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:09:25,317 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:09:25,317 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:09:25,317 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:09:25,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:09:25,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:09:25,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:09:25,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:09:25,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:09:25,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:09:25,319 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:09:25,320 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:09:25,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:09:25,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:09:25,320 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6961864fd80b1152371f3ae9fd5697ae273a1dc [2021-10-16 02:09:25,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:09:25,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:09:25,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:09:25,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:09:25,861 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:09:25,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/forester-heap/sll-token-2.i [2021-10-16 02:09:25,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data/484787f6f/f114856e20da42a9b79bf80cbe2d20eb/FLAG0034b46d4 [2021-10-16 02:09:26,738 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:09:26,738 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i [2021-10-16 02:09:26,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data/484787f6f/f114856e20da42a9b79bf80cbe2d20eb/FLAG0034b46d4 [2021-10-16 02:09:26,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/data/484787f6f/f114856e20da42a9b79bf80cbe2d20eb [2021-10-16 02:09:26,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:09:26,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:09:26,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:09:26,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:09:26,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:09:26,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:09:26" (1/1) ... [2021-10-16 02:09:26,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fead661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:26, skipping insertion in model container [2021-10-16 02:09:26,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:09:26" (1/1) ... [2021-10-16 02:09:26,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:09:27,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:09:27,424 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2021-10-16 02:09:27,430 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2021-10-16 02:09:27,452 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2021-10-16 02:09:27,454 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2021-10-16 02:09:27,456 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2021-10-16 02:09:27,460 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2021-10-16 02:09:27,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:09:27,492 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:09:27,544 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2021-10-16 02:09:27,547 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2021-10-16 02:09:27,549 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2021-10-16 02:09:27,551 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2021-10-16 02:09:27,552 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2021-10-16 02:09:27,555 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_3ee09791-2692-41bf-8a90-0b2dcf8a6361/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2021-10-16 02:09:27,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:09:27,599 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:09:27,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27 WrapperNode [2021-10-16 02:09:27,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:09:27,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:09:27,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:09:27,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:09:27,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:09:27,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:09:27,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:09:27,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:09:27,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:09:27,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:09:27,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:09:27,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:09:27,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (1/1) ... [2021-10-16 02:09:27,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:09:27,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:09:27,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:09:27,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:09:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:09:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:09:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:09:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:09:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:09:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:09:27,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:09:28,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:09:28,813 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-16 02:09:28,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:28 BoogieIcfgContainer [2021-10-16 02:09:28,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:09:28,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:09:28,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:09:28,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:09:28,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:09:26" (1/3) ... [2021-10-16 02:09:28,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c08e1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:09:28, skipping insertion in model container [2021-10-16 02:09:28,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:09:27" (2/3) ... [2021-10-16 02:09:28,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c08e1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:09:28, skipping insertion in model container [2021-10-16 02:09:28,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:28" (3/3) ... [2021-10-16 02:09:28,833 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2021-10-16 02:09:28,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:09:28,843 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-10-16 02:09:28,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:09:28,896 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 [2021-10-16 02:09:28,897 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-10-16 02:09:28,920 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) [2021-10-16 02:09:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:09:28,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:28,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:09:28,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-16 02:09:28,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:28,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851168393] [2021-10-16 02:09:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:28,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:28,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:28,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:09:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:29,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:29,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:29,137 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 [2021-10-16 02:09:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:29,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:29,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:29,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851168393] [2021-10-16 02:09:29,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851168393] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:29,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:29,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:09:29,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47504087] [2021-10-16 02:09:29,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:09:29,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:09:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:09:29,244 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) [2021-10-16 02:09:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:29,658 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2021-10-16 02:09:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:09:29,661 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 [2021-10-16 02:09:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:29,683 INFO L225 Difference]: With dead ends: 136 [2021-10-16 02:09:29,683 INFO L226 Difference]: Without dead ends: 134 [2021-10-16 02:09:29,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:09:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-16 02:09:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 114. [2021-10-16 02:09:29,760 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) [2021-10-16 02:09:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2021-10-16 02:09:29,766 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 3 [2021-10-16 02:09:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:29,767 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2021-10-16 02:09:29,767 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) [2021-10-16 02:09:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2021-10-16 02:09:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:09:29,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:29,768 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:09:29,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:09:29,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:29,990 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:29,997 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-16 02:09:30,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:30,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521878859] [2021-10-16 02:09:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:30,003 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:30,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:30,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:30,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:09:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:30,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:09:30,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:30,108 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 [2021-10-16 02:09:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:30,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:30,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:30,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521878859] [2021-10-16 02:09:30,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521878859] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:30,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:30,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:09:30,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665420771] [2021-10-16 02:09:30,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:30,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:30,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:30,226 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) [2021-10-16 02:09:30,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:30,631 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2021-10-16 02:09:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:09:30,634 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 [2021-10-16 02:09:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:30,636 INFO L225 Difference]: With dead ends: 140 [2021-10-16 02:09:30,636 INFO L226 Difference]: Without dead ends: 140 [2021-10-16 02:09:30,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-16 02:09:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2021-10-16 02:09:30,646 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) [2021-10-16 02:09:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2021-10-16 02:09:30,648 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 3 [2021-10-16 02:09:30,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:30,649 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2021-10-16 02:09:30,649 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) [2021-10-16 02:09:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2021-10-16 02:09:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:09:30,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:30,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:30,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:30,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:30,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:30,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:30,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1803027143, now seen corresponding path program 1 times [2021-10-16 02:09:30,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:30,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316679268] [2021-10-16 02:09:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:30,865 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:30,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:30,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:30,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:09:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:30,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:09:30,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:30,956 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 [2021-10-16 02:09:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:30,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:31,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:31,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316679268] [2021-10-16 02:09:31,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316679268] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:31,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:31,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:09:31,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830678757] [2021-10-16 02:09:31,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:31,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:31,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:31,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:31,035 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) [2021-10-16 02:09:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:31,430 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2021-10-16 02:09:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:09:31,431 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 [2021-10-16 02:09:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:31,433 INFO L225 Difference]: With dead ends: 118 [2021-10-16 02:09:31,433 INFO L226 Difference]: Without dead ends: 118 [2021-10-16 02:09:31,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:09:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-16 02:09:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 101. [2021-10-16 02:09:31,442 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) [2021-10-16 02:09:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-16 02:09:31,444 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 7 [2021-10-16 02:09:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:31,445 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-16 02:09:31,445 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) [2021-10-16 02:09:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-16 02:09:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:09:31,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:31,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:31,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:31,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:31,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:31,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1803027144, now seen corresponding path program 1 times [2021-10-16 02:09:31,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:31,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600814571] [2021-10-16 02:09:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:31,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:31,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:31,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:31,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:09:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:31,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:09:31,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:31,797 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 [2021-10-16 02:09:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:31,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:32,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:32,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600814571] [2021-10-16 02:09:32,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600814571] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:32,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:32,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:09:32,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88153085] [2021-10-16 02:09:32,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:09:32,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:09:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:09:32,148 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) [2021-10-16 02:09:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:33,100 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2021-10-16 02:09:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:09:33,101 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 [2021-10-16 02:09:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:33,102 INFO L225 Difference]: With dead ends: 177 [2021-10-16 02:09:33,103 INFO L226 Difference]: Without dead ends: 177 [2021-10-16 02:09:33,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 222.0ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:09:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-16 02:09:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 127. [2021-10-16 02:09:33,111 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) [2021-10-16 02:09:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-10-16 02:09:33,112 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 7 [2021-10-16 02:09:33,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:33,113 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-10-16 02:09:33,113 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) [2021-10-16 02:09:33,113 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-10-16 02:09:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:09:33,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:33,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:33,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:33,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:33,322 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:33,323 INFO L82 PathProgramCache]: Analyzing trace with hash 406735527, now seen corresponding path program 1 times [2021-10-16 02:09:33,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:33,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573087749] [2021-10-16 02:09:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:33,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:33,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:33,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:33,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:09:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:33,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:09:33,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:33,463 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 [2021-10-16 02:09:33,496 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 [2021-10-16 02:09:33,529 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 [2021-10-16 02:09:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:33,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:33,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:33,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573087749] [2021-10-16 02:09:33,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573087749] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:33,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:33,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 02:09:33,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303973675] [2021-10-16 02:09:33,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:09:33,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:09:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:09:33,634 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) [2021-10-16 02:09:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:34,263 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-10-16 02:09:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:09:34,263 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 [2021-10-16 02:09:34,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:34,265 INFO L225 Difference]: With dead ends: 126 [2021-10-16 02:09:34,265 INFO L226 Difference]: Without dead ends: 126 [2021-10-16 02:09:34,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:09:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-16 02:09:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-16 02:09:34,273 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) [2021-10-16 02:09:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-10-16 02:09:34,275 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 11 [2021-10-16 02:09:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:34,275 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-10-16 02:09:34,275 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) [2021-10-16 02:09:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-10-16 02:09:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:09:34,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:34,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:34,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:34,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:34,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:34,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:34,491 INFO L82 PathProgramCache]: Analyzing trace with hash 406735528, now seen corresponding path program 1 times [2021-10-16 02:09:34,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:34,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502599875] [2021-10-16 02:09:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:34,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:34,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:34,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:34,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:09:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:34,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:09:34,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:34,638 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 [2021-10-16 02:09:34,679 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 [2021-10-16 02:09:34,689 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 [2021-10-16 02:09:34,750 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 [2021-10-16 02:09:34,762 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 [2021-10-16 02:09:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:34,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:35,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:35,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502599875] [2021-10-16 02:09:35,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502599875] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:35,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:35,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-16 02:09:35,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398306973] [2021-10-16 02:09:35,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:09:35,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:09:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:09:35,209 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) [2021-10-16 02:09:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:36,747 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-10-16 02:09:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:09:36,748 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 [2021-10-16 02:09:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:36,749 INFO L225 Difference]: With dead ends: 126 [2021-10-16 02:09:36,749 INFO L226 Difference]: Without dead ends: 126 [2021-10-16 02:09:36,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 465.0ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:09:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-16 02:09:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2021-10-16 02:09:36,755 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) [2021-10-16 02:09:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2021-10-16 02:09:36,756 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 11 [2021-10-16 02:09:36,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:36,756 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2021-10-16 02:09:36,757 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) [2021-10-16 02:09:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2021-10-16 02:09:36,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:09:36,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:36,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:36,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:36,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:36,959 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:36,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:36,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1104437320, now seen corresponding path program 1 times [2021-10-16 02:09:36,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:36,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667258371] [2021-10-16 02:09:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:36,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:36,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:36,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:36,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:09:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:37,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:09:37,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:37,103 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 [2021-10-16 02:09:37,149 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 [2021-10-16 02:09:37,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-16 02:09:37,230 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 [2021-10-16 02:09:37,240 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 [2021-10-16 02:09:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:37,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:37,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:37,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667258371] [2021-10-16 02:09:37,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667258371] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:37,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:37,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:09:37,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88713742] [2021-10-16 02:09:37,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:09:37,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:09:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:09:37,557 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) [2021-10-16 02:09:38,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:38,403 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-10-16 02:09:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:09:38,404 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 [2021-10-16 02:09:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:38,405 INFO L225 Difference]: With dead ends: 111 [2021-10-16 02:09:38,405 INFO L226 Difference]: Without dead ends: 111 [2021-10-16 02:09:38,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 237.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:09:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-16 02:09:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-16 02:09:38,410 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) [2021-10-16 02:09:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-10-16 02:09:38,411 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 12 [2021-10-16 02:09:38,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:38,412 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-10-16 02:09:38,412 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) [2021-10-16 02:09:38,412 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-10-16 02:09:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:09:38,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:38,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:38,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-16 02:09:38,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:38,627 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:38,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1104437321, now seen corresponding path program 1 times [2021-10-16 02:09:38,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:38,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232648884] [2021-10-16 02:09:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:38,628 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:38,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:38,629 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:38,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:09:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:38,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:09:38,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:38,762 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 [2021-10-16 02:09:38,784 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 [2021-10-16 02:09:38,815 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 [2021-10-16 02:09:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:38,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:38,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:38,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232648884] [2021-10-16 02:09:38,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232648884] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:38,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:38,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:09:38,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421572784] [2021-10-16 02:09:38,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:09:38,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:38,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:09:38,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:09:38,899 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) [2021-10-16 02:09:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:39,194 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-16 02:09:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:09:39,194 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 [2021-10-16 02:09:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:39,196 INFO L225 Difference]: With dead ends: 110 [2021-10-16 02:09:39,196 INFO L226 Difference]: Without dead ends: 110 [2021-10-16 02:09:39,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:09:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-16 02:09:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-16 02:09:39,201 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) [2021-10-16 02:09:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2021-10-16 02:09:39,203 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 12 [2021-10-16 02:09:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:39,203 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2021-10-16 02:09:39,203 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) [2021-10-16 02:09:39,204 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2021-10-16 02:09:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:09:39,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:39,205 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:39,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:39,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:39,417 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)] === [2021-10-16 02:09:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:39,418 INFO L82 PathProgramCache]: Analyzing trace with hash 30817671, now seen corresponding path program 1 times [2021-10-16 02:09:39,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:39,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050041744] [2021-10-16 02:09:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:39,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:39,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:39,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:09:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:39,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:09:39,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:39,584 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 [2021-10-16 02:09:39,610 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 [2021-10-16 02:09:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:39,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:39,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:39,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050041744] [2021-10-16 02:09:39,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050041744] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:39,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:39,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 02:09:39,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45709348] [2021-10-16 02:09:39,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:09:39,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:09:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:09:39,694 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) [2021-10-16 02:09:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:40,045 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-10-16 02:09:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:09:40,046 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 [2021-10-16 02:09:40,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:40,047 INFO L225 Difference]: With dead ends: 120 [2021-10-16 02:09:40,047 INFO L226 Difference]: Without dead ends: 120 [2021-10-16 02:09:40,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:09:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-16 02:09:40,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2021-10-16 02:09:40,051 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) [2021-10-16 02:09:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2021-10-16 02:09:40,052 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 13 [2021-10-16 02:09:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:40,052 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2021-10-16 02:09:40,053 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) [2021-10-16 02:09:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2021-10-16 02:09:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:09:40,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:40,054 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:40,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:40,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:40,257 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)] === [2021-10-16 02:09:40,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:40,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1452259692, now seen corresponding path program 1 times [2021-10-16 02:09:40,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:40,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733191556] [2021-10-16 02:09:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:40,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:40,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:40,260 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:40,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:09:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:40,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:09:40,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:40,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:40,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:40,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733191556] [2021-10-16 02:09:40,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733191556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:40,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:40,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:09:40,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128988776] [2021-10-16 02:09:40,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:40,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:40,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:40,558 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) [2021-10-16 02:09:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:40,783 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2021-10-16 02:09:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:09:40,784 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 [2021-10-16 02:09:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:40,785 INFO L225 Difference]: With dead ends: 162 [2021-10-16 02:09:40,785 INFO L226 Difference]: Without dead ends: 162 [2021-10-16 02:09:40,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:09:40,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-16 02:09:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 106. [2021-10-16 02:09:40,789 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) [2021-10-16 02:09:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2021-10-16 02:09:40,789 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 15 [2021-10-16 02:09:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:40,790 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2021-10-16 02:09:40,790 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) [2021-10-16 02:09:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2021-10-16 02:09:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:09:40,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:40,791 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] [2021-10-16 02:09:40,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:40,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:40,993 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)] === [2021-10-16 02:09:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:40,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1205348374, now seen corresponding path program 1 times [2021-10-16 02:09:40,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:40,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116380111] [2021-10-16 02:09:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:40,994 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:40,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:40,995 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:40,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:09:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:09:41,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:41,248 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 [2021-10-16 02:09:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:41,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:41,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:41,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116380111] [2021-10-16 02:09:41,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116380111] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:41,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:41,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-16 02:09:41,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723537379] [2021-10-16 02:09:41,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:09:41,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:41,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:09:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:09:41,361 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) [2021-10-16 02:09:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:41,621 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-10-16 02:09:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:09:41,621 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 [2021-10-16 02:09:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:41,622 INFO L225 Difference]: With dead ends: 104 [2021-10-16 02:09:41,623 INFO L226 Difference]: Without dead ends: 104 [2021-10-16 02:09:41,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:09:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-16 02:09:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-16 02:09:41,626 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) [2021-10-16 02:09:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2021-10-16 02:09:41,627 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 20 [2021-10-16 02:09:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:41,627 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2021-10-16 02:09:41,628 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) [2021-10-16 02:09:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2021-10-16 02:09:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:09:41,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:41,629 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] [2021-10-16 02:09:41,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:41,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:41,837 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)] === [2021-10-16 02:09:41,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:41,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1205315603, now seen corresponding path program 1 times [2021-10-16 02:09:41,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:41,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309800346] [2021-10-16 02:09:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:41,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:41,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:41,840 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:41,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:09:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:42,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:09:42,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:42,068 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 [2021-10-16 02:09:42,149 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 [2021-10-16 02:09:42,235 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:09:42,236 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 [2021-10-16 02:09:42,308 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 [2021-10-16 02:09:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:09:42,332 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 [2021-10-16 02:09:42,423 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 [2021-10-16 02:09:42,516 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-16 02:09:42,516 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 [2021-10-16 02:09:42,859 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-10-16 02:09:42,859 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 [2021-10-16 02:09:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:42,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:43,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:43,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-16 02:09:45,526 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 [2021-10-16 02:09:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:45,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:45,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309800346] [2021-10-16 02:09:45,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309800346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:45,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:45,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 17 [2021-10-16 02:09:45,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272366146] [2021-10-16 02:09:45,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 02:09:45,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 02:09:45,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=219, Unknown=1, NotChecked=0, Total=272 [2021-10-16 02:09:45,938 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) [2021-10-16 02:09:50,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:50,966 INFO L93 Difference]: Finished difference Result 197 states and 202 transitions. [2021-10-16 02:09:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 02:09:50,967 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 [2021-10-16 02:09:50,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:50,969 INFO L225 Difference]: With dead ends: 197 [2021-10-16 02:09:50,969 INFO L226 Difference]: Without dead ends: 197 [2021-10-16 02:09:50,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5665.2ms TimeCoverageRelationStatistics Valid=206, Invalid=604, Unknown=2, NotChecked=0, Total=812 [2021-10-16 02:09:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-16 02:09:50,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 116. [2021-10-16 02:09:50,973 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) [2021-10-16 02:09:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-10-16 02:09:50,975 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 20 [2021-10-16 02:09:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:50,975 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-10-16 02:09:50,975 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) [2021-10-16 02:09:50,976 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-10-16 02:09:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:09:50,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:50,977 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] [2021-10-16 02:09:50,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:51,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:51,191 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:09:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:51,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1692196743, now seen corresponding path program 1 times [2021-10-16 02:09:51,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:51,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173569904] [2021-10-16 02:09:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:51,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:51,194 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:51,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:09:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:51,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:09:51,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:51,480 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 [2021-10-16 02:09:51,614 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-16 02:09:51,614 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 [2021-10-16 02:09:51,718 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 [2021-10-16 02:09:52,007 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 02:09:52,008 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 [2021-10-16 02:09:52,380 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 [2021-10-16 02:09:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:52,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:52,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:09:52,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-16 02:09:54,719 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8.base|) (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 [2021-10-16 02:10:05,204 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 [2021-10-16 02:10:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:22,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:10:22,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173569904] [2021-10-16 02:10:22,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173569904] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:10:22,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:10:22,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-16 02:10:22,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661881677] [2021-10-16 02:10:22,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-16 02:10:22,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:10:22,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-16 02:10:22,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=264, Unknown=8, NotChecked=34, Total=380 [2021-10-16 02:10:22,453 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) [2021-10-16 02:10:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:28,992 INFO L93 Difference]: Finished difference Result 178 states and 185 transitions. [2021-10-16 02:10:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 02:10:28,993 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 [2021-10-16 02:10:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:28,995 INFO L225 Difference]: With dead ends: 178 [2021-10-16 02:10:28,995 INFO L226 Difference]: Without dead ends: 178 [2021-10-16 02:10:28,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 33538.5ms TimeCoverageRelationStatistics Valid=182, Invalid=514, Unknown=10, NotChecked=50, Total=756 [2021-10-16 02:10:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-16 02:10:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 122. [2021-10-16 02:10:28,999 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) [2021-10-16 02:10:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2021-10-16 02:10:29,000 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 23 [2021-10-16 02:10:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:29,002 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2021-10-16 02:10:29,002 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) [2021-10-16 02:10:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2021-10-16 02:10:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:10:29,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:10:29,008 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] [2021-10-16 02:10:29,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:29,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:29,209 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:10:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:10:29,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1692196744, now seen corresponding path program 1 times [2021-10-16 02:10:29,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:10:29,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802295034] [2021-10-16 02:10:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:10:29,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:10:29,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:10:29,212 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:10:29,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:10:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:10:29,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:10:29,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:10:29,532 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 [2021-10-16 02:10:29,645 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:10:29,646 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 [2021-10-16 02:10:29,670 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 [2021-10-16 02:10:29,726 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 [2021-10-16 02:10:29,749 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 [2021-10-16 02:10:29,937 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 02:10:29,938 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 [2021-10-16 02:10:29,960 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:10:29,960 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 [2021-10-16 02:10:30,199 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 [2021-10-16 02:10:30,203 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 [2021-10-16 02:10:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:10:30,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:10:30,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:30,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-16 02:10:30,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:10:30,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-16 02:10:48,057 WARN L207 SmtUtils]: Spent 5.54 s on a formula simplification that was a NOOP. DAG size: 30 [2021-10-16 02:10:50,106 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset)) (.cse1 (bvadd |ULTIMATE.start_main_#t~mem8.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_3)) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset))))) (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32))) (let ((.cse2 (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset))) (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) (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 .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))) is different from false [2021-10-16 02:10:50,166 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 214 treesize of output 210 [2021-10-16 02:10:50,176 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 [2021-10-16 02:11:01,984 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 [2021-10-16 02:11:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:11:02,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:11:02,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802295034] [2021-10-16 02:11:02,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802295034] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:11:02,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:11:02,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-16 02:11:02,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408092957] [2021-10-16 02:11:02,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 02:11:02,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:11:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 02:11:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=257, Unknown=2, NotChecked=32, Total=342 [2021-10-16 02:11:02,674 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) [2021-10-16 02:11:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:11:12,655 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2021-10-16 02:11:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 02:11:12,656 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 [2021-10-16 02:11:12,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:11:12,658 INFO L225 Difference]: With dead ends: 195 [2021-10-16 02:11:12,658 INFO L226 Difference]: Without dead ends: 195 [2021-10-16 02:11:12,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 25655.5ms TimeCoverageRelationStatistics Valid=190, Invalid=682, Unknown=2, NotChecked=56, Total=930 [2021-10-16 02:11:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-16 02:11:12,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 122. [2021-10-16 02:11:12,663 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) [2021-10-16 02:11:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-10-16 02:11:12,664 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 23 [2021-10-16 02:11:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:11:12,664 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-10-16 02:11:12,664 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) [2021-10-16 02:11:12,664 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-10-16 02:11:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:11:12,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:11:12,666 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] [2021-10-16 02:11:12,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:11:12,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:11:12,866 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)] === [2021-10-16 02:11:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:11:12,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1591531161, now seen corresponding path program 1 times [2021-10-16 02:11:12,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:11:12,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080074433] [2021-10-16 02:11:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:11:12,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:11:12,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:11:12,868 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:11:12,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:11:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:11:13,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:11:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:11:13,334 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 [2021-10-16 02:11:13,531 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:11:13,531 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 [2021-10-16 02:11:13,537 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 [2021-10-16 02:11:13,559 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-16 02:11:13,560 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 [2021-10-16 02:11:13,876 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 [2021-10-16 02:11:13,881 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 [2021-10-16 02:11:14,012 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:11:14,012 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 [2021-10-16 02:11:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:11:14,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:14,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:14,508 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 [2021-10-16 02:11:14,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:14,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-16 02:11:14,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:14,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-16 02:11:14,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:14,907 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 [2021-10-16 02:11:15,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:11:15,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080074433] [2021-10-16 02:11:15,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_6 [2021-10-16 02:11:15,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1017670208] [2021-10-16 02:11:15,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:11:15,308 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:11:15,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:11:15,310 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:11:15,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 02:11:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:11:15,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:11:15,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:11:15,752 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 [2021-10-16 02:11:16,035 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:11:16,035 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 [2021-10-16 02:11:16,138 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 [2021-10-16 02:11:16,147 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 [2021-10-16 02:11:16,494 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-10-16 02:11:16,494 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 [2021-10-16 02:11:16,501 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 [2021-10-16 02:11:16,526 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-10-16 02:11:16,526 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 [2021-10-16 02:11:16,931 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 [2021-10-16 02:11:16,936 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 [2021-10-16 02:11:17,094 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 [2021-10-16 02:11:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:11:17,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:17,251 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 [2021-10-16 02:11:17,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:17,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-16 02:11:17,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:17,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:11:17,641 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 [2021-10-16 02:11:17,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:11:17,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:11:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:11:20,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1017670208] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:11:20,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:11:20,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 21 [2021-10-16 02:11:20,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416881767] [2021-10-16 02:11:20,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-16 02:11:20,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:11:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-16 02:11:20,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1109, Unknown=1, NotChecked=0, Total=1260 [2021-10-16 02:11:20,303 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) [2021-10-16 02:11:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:11:28,988 INFO L93 Difference]: Finished difference Result 214 states and 220 transitions. [2021-10-16 02:11:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 02:11:28,989 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 [2021-10-16 02:11:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:11:28,991 INFO L225 Difference]: With dead ends: 214 [2021-10-16 02:11:28,991 INFO L226 Difference]: Without dead ends: 214 [2021-10-16 02:11:28,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 5090.5ms TimeCoverageRelationStatistics Valid=337, Invalid=1824, Unknown=1, NotChecked=0, Total=2162 [2021-10-16 02:11:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-16 02:11:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 123. [2021-10-16 02:11:28,998 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) [2021-10-16 02:11:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-16 02:11:28,999 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 25 [2021-10-16 02:11:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:11:29,000 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-16 02:11:29,000 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) [2021-10-16 02:11:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-16 02:11:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:11:29,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:11:29,002 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] [2021-10-16 02:11:29,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:11:29,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:11:29,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:11:29,405 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)] === [2021-10-16 02:11:29,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:11:29,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1799464038, now seen corresponding path program 1 times [2021-10-16 02:11:29,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:11:29,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475579125] [2021-10-16 02:11:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:11:29,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:11:29,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:11:29,407 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:11:29,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:11:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:11:29,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:11:29,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:11:29,886 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 [2021-10-16 02:11:29,926 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 [2021-10-16 02:11:30,067 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:11:30,067 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 [2021-10-16 02:11:30,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:11:30,151 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 [2021-10-16 02:11:30,176 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 [2021-10-16 02:11:30,308 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 [2021-10-16 02:11:30,458 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 [2021-10-16 02:11:30,690 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 [2021-10-16 02:11:30,799 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:11:30,799 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 [2021-10-16 02:11:30,898 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-10-16 02:11:30,898 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 [2021-10-16 02:11:30,930 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 [2021-10-16 02:11:31,070 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 [2021-10-16 02:11:32,463 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-10-16 02:11:32,464 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 [2021-10-16 02:11:33,023 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 02:11:33,024 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 [2021-10-16 02:11:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:11:33,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:11:33,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:33,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:11:40,756 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_29| (_ BitVec 32))) (or (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (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_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 [2021-10-16 02:11:42,833 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 [2021-10-16 02:11:44,999 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 [2021-10-16 02:11:47,055 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 [2021-10-16 02:11:49,106 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 [2021-10-16 02:11:49,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:11:49,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-16 02:11:49,214 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:11:49,214 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 [2021-10-16 02:11:51,285 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 [2021-10-16 02:12:02,113 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 [2021-10-16 02:12:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:12:04,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:12:04,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475579125] [2021-10-16 02:12:04,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475579125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:04,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1149851602] [2021-10-16 02:12:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:04,524 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:12:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:12:04,529 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:12:04,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-16 02:12:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:05,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:12:05,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:05,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-16 02:12:05,171 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 [2021-10-16 02:12:05,258 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:12:05,259 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 [2021-10-16 02:12:05,302 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 [2021-10-16 02:12:05,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:12:05,321 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 [2021-10-16 02:12:05,391 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 [2021-10-16 02:12:05,443 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 [2021-10-16 02:12:05,585 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 [2021-10-16 02:12:05,655 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:12:05,655 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 [2021-10-16 02:12:05,700 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 [2021-10-16 02:12:05,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:12:05,714 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 [2021-10-16 02:12:05,774 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 29 treesize of output 21 [2021-10-16 02:12:07,160 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-10-16 02:12:07,160 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 [2021-10-16 02:12:07,478 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 02:12:07,479 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 [2021-10-16 02:12:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:07,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:07,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:07,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:12:09,592 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (= (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_11)))) (store .cse0 |c_ULTIMATE.start_main_#t~malloc7.base| (store (select .cse0 |c_ULTIMATE.start_main_#t~malloc7.base|) (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 [2021-10-16 02:12:27,863 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_32| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_32|))) (= (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_11)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32|) (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 [2021-10-16 02:12:30,082 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_DerPreprocessor_11 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_32| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_32|))) (= (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_11)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32|) (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 [2021-10-16 02:12:32,132 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_DerPreprocessor_11 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_32| (_ BitVec 32))) (or (= (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_11)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32|) (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_32|))))) is different from false [2021-10-16 02:12:34,178 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_32| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_85 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$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_11))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32|) (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_32|))))) is different from false [2021-10-16 02:12:34,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:34,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-16 02:12:34,309 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:12:34,310 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 [2021-10-16 02:12:36,378 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_32| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_85 (_ BitVec 32))) (or (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_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_11))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_32|) (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 [2021-10-16 02:12:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:12:49,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1149851602] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:12:49,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025615445] [2021-10-16 02:12:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:49,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:12:49,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:12:49,605 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:12:49,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 02:12:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:50,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:12:50,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:12:50,164 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 [2021-10-16 02:12:50,192 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 [2021-10-16 02:12:50,263 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:12:50,263 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 [2021-10-16 02:12:50,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:12:50,310 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 [2021-10-16 02:12:50,319 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 [2021-10-16 02:12:50,420 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 [2021-10-16 02:12:50,501 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 [2021-10-16 02:12:50,648 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 [2021-10-16 02:12:50,706 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:12:50,706 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 [2021-10-16 02:12:50,756 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 [2021-10-16 02:12:50,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:12:50,770 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 [2021-10-16 02:12:50,857 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 [2021-10-16 02:12:51,711 INFO L354 Elim1Store]: treesize reduction 76, result has 26.2 percent of original size [2021-10-16 02:12:51,712 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 [2021-10-16 02:12:52,074 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-16 02:12:52,075 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 [2021-10-16 02:12:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:12:52,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:12:52,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:12:52,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-16 02:13:02,838 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_35| (_ BitVec 32))) (or (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (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_9)))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_35| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_35|) (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_35|))))) is different from false [2021-10-16 02:13:04,886 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_35| (_ 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_35| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_35|) (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_35|))))) is different from false [2021-10-16 02:13:07,029 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_35| (_ 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_35| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_35|) (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_35|))))) is different from false [2021-10-16 02:13:09,074 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0.offset (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_35| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (_ bv0 32) (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_35| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_35|) (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)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_35|))))) is different from false [2021-10-16 02:13:11,134 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_35| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_90 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$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_35| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_35|) (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_35|))))) is different from false [2021-10-16 02:13:11,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:11,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-16 02:13:11,243 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:13:11,243 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 [2021-10-16 02:13:13,305 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_35| (_ 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 (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_35|) (= (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_35| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_35|) (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 [2021-10-16 02:13:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:13:28,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025615445] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:13:28,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:13:28,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 44 [2021-10-16 02:13:28,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611012153] [2021-10-16 02:13:28,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-16 02:13:28,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:13:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-16 02:13:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=508, Unknown=28, NotChecked=1216, Total=1892 [2021-10-16 02:13:28,308 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 44 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 44 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:30,789 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_35| (_ 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 (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_35|) (= (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_35| (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc7.base_35|) (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 (= 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 ((.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_10)))) (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_80) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_80 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))) (_ 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) (= 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 ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_32| (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_85 (_ BitVec 32))) (or (= c_ULTIMATE.start_main_~x~0.base |v_ULTIMATE.start_main_#t~malloc7.base_32|) (= (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_12)))) (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_85) (_ bv1 32)) v_ULTIMATE.start_main_~x~0.offset_85 v_DerPreprocessor_11))))) (store .cse4 |v_ULTIMATE.start_main_#t~malloc7.base_32| (store (select .cse4 |v_ULTIMATE.start_main_#t~malloc7.base_32|) (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 [2021-10-16 02:13:38,270 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))) (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc7.base_32| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7.base_32|))) (= (select (select (let ((.cse1 (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_11)))) (store .cse1 |v_ULTIMATE.start_main_#t~malloc7.base_32| (store (select .cse1 |v_ULTIMATE.start_main_#t~malloc7.base_32|) (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)))) (= (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_35| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (or (= (select (select (let ((.cse2 (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 .cse2 |v_ULTIMATE.start_main_#t~malloc7.base_35| (store (select .cse2 |v_ULTIMATE.start_main_#t~malloc7.base_35|) (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_35|)))))) is different from false [2021-10-16 02:13:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:47,415 INFO L93 Difference]: Finished difference Result 250 states and 264 transitions. [2021-10-16 02:13:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-16 02:13:47,416 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 44 states have internal predecessors, (76), 0 states have call successors, (0), 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 [2021-10-16 02:13:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:47,418 INFO L225 Difference]: With dead ends: 250 [2021-10-16 02:13:47,418 INFO L226 Difference]: Without dead ends: 250 [2021-10-16 02:13:47,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 118 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 120623.1ms TimeCoverageRelationStatistics Valid=273, Invalid=1038, Unknown=33, NotChecked=1848, Total=3192 [2021-10-16 02:13:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-16 02:13:47,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 144. [2021-10-16 02:13:47,424 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) [2021-10-16 02:13:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2021-10-16 02:13:47,425 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 28 [2021-10-16 02:13:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:47,426 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2021-10-16 02:13:47,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 44 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:47,426 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2021-10-16 02:13:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:13:47,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:47,428 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] [2021-10-16 02:13:47,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:47,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:47,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:48,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:13:48,041 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)] === [2021-10-16 02:13:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1566212066, now seen corresponding path program 1 times [2021-10-16 02:13:48,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:13:48,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321476294] [2021-10-16 02:13:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:48,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:13:48,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:13:48,044 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:13:48,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:13:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:48,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:13:48,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:13:48,755 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 [2021-10-16 02:13:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:48,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:13:48,909 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-10-16 02:13:48,909 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 [2021-10-16 02:13:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:48,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:13:48,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321476294] [2021-10-16 02:13:48,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321476294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:48,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:48,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-16 02:13:48,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766080496] [2021-10-16 02:13:48,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:13:48,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:13:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:13:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:13:48,960 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) [2021-10-16 02:13:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:49,977 INFO L93 Difference]: Finished difference Result 217 states and 223 transitions. [2021-10-16 02:13:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:13:49,978 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 [2021-10-16 02:13:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:49,980 INFO L225 Difference]: With dead ends: 217 [2021-10-16 02:13:49,980 INFO L226 Difference]: Without dead ends: 217 [2021-10-16 02:13:49,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 191.3ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:13:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-16 02:13:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 153. [2021-10-16 02:13:49,986 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) [2021-10-16 02:13:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2021-10-16 02:13:49,987 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 31 [2021-10-16 02:13:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:49,988 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2021-10-16 02:13:49,988 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) [2021-10-16 02:13:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2021-10-16 02:13:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:13:49,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:49,990 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] [2021-10-16 02:13:50,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:50,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:13:50,221 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 50 more)] === [2021-10-16 02:13:50,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:50,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1374098542, now seen corresponding path program 1 times [2021-10-16 02:13:50,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:13:50,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952884540] [2021-10-16 02:13:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:50,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:13:50,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:13:50,223 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:13:50,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 02:13:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:50,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-16 02:13:50,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:13:50,829 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 [2021-10-16 02:13:50,922 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:13:50,922 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 [2021-10-16 02:13:50,969 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 [2021-10-16 02:13:51,154 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 02:13:51,154 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 [2021-10-16 02:13:51,264 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 02:13:51,265 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 [2021-10-16 02:13:51,382 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:13:51,383 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 [2021-10-16 02:13:51,398 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 [2021-10-16 02:13:51,505 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 [2021-10-16 02:13:51,676 INFO L354 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2021-10-16 02:13:51,677 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 [2021-10-16 02:13:51,684 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 [2021-10-16 02:13:52,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:13:52,061 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:52,061 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 [2021-10-16 02:13:52,298 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 [2021-10-16 02:13:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:52,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:13:53,016 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 [2021-10-16 02:13:53,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:53,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-16 02:13:53,429 INFO L354 Elim1Store]: treesize reduction 5, result has 86.8 percent of original size [2021-10-16 02:13:53,430 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 [2021-10-16 02:13:55,520 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 [2021-10-16 02:13:57,628 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 [2021-10-16 02:13:57,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:13:57,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:13:59,751 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 [2021-10-16 02:14:00,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:14:00,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:14:02,187 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 [2021-10-16 02:14:04,290 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 [2021-10-16 02:14:06,396 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 [2021-10-16 02:14:06,503 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 [2021-10-16 02:14:06,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:14:06,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952884540] [2021-10-16 02:14:06,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:14:06,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [211834633] [2021-10-16 02:14:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:14:06,606 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:14:06,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:14:06,609 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:14:06,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-16 02:14:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:14:07,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:14:07,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:14:07,396 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 [2021-10-16 02:14:07,463 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:14:07,463 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 [2021-10-16 02:14:07,491 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 [2021-10-16 02:14:07,837 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 02:14:07,837 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 [2021-10-16 02:14:07,957 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 02:14:07,957 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 [2021-10-16 02:14:08,016 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:14:08,016 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 [2021-10-16 02:14:08,137 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:14:08,137 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 [2021-10-16 02:14:10,130 INFO L354 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-10-16 02:14:10,130 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 [2021-10-16 02:14:10,372 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 31 treesize of output 19 [2021-10-16 02:14:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:14:10,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:14:10,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:14:10,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-16 02:14:33,315 INFO L354 Elim1Store]: treesize reduction 5, result has 86.8 percent of original size [2021-10-16 02:14:33,315 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 [2021-10-16 02:14:52,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7.base_40| (_ BitVec 32))) (or (forall ((|ULTIMATE.start_main_#t~mem8.offset| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (= c_ULTIMATE.start_main_~x~0.base (select (select (let ((.cse0 (store |c_#memory_$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_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 [2021-10-16 02:14:52,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:14:52,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-16 02:14:54,986 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 [2021-10-16 02:14:55,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:14:55,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-16 02:14:57,129 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 [2021-10-16 02:14:59,192 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 [2021-10-16 02:15:01,235 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 [2021-10-16 02:15:01,285 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 [2021-10-16 02:15:01,431 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:15:01,432 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 [2021-10-16 02:15:01,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:15:01,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060719611] [2021-10-16 02:15:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:01,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:01,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:01,484 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:15:01,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-16 02:15:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:02,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:15:02,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:15:02,027 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 [2021-10-16 02:15:02,161 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:15:02,161 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 [2021-10-16 02:15:02,239 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 [2021-10-16 02:15:02,514 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 02:15:02,515 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 [2021-10-16 02:15:02,664 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-10-16 02:15:02,665 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 [2021-10-16 02:15:02,696 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-16 02:15:02,696 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 [2021-10-16 02:15:02,801 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-16 02:15:02,802 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 [2021-10-16 02:15:04,008 INFO L354 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-10-16 02:15:04,008 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 [2021-10-16 02:15:04,250 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 32 treesize of output 20 [2021-10-16 02:15:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:04,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:15:04,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:04,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-16 02:15:12,901 INFO L354 Elim1Store]: treesize reduction 5, result has 86.8 percent of original size [2021-10-16 02:15:12,901 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 [2021-10-16 02:15:14,943 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 [2021-10-16 02:15:14,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:14,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-16 02:15:17,014 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 [2021-10-16 02:15:17,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:15:17,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-16 02:15:19,182 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 [2021-10-16 02:15:21,234 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 [2021-10-16 02:15:23,288 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 [2021-10-16 02:15:23,338 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 [2021-10-16 02:15:23,449 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-16 02:15:23,449 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 [2021-10-16 02:15:23,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:15:23,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:23,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:15:23,478 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:15:23,478 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:15:23,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-16 02:15:23,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:15:23,486 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:15:23,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:15:23,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:15:23,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 02:15:23,487 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 02:15:23,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-16 02:15:23,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-16 02:15:23,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-16 02:15:23,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-16 02:15:23,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:15:23,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-16 02:15:23,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-16 02:15:23,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-16 02:15:23,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-16 02:15:23,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-16 02:15:23,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-16 02:15:23,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-16 02:15:23,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:15:23,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-16 02:15:23,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-16 02:15:23,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-16 02:15:23,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:15:23,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-16 02:15:23,494 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-16 02:15:23,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-16 02:15:23,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-16 02:15:23,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-16 02:15:23,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-16 02:15:23,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:15:23,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-16 02:15:23,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-16 02:15:23,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:15:23,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:15:23,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-16 02:15:23,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:23,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:15:24,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:24,116 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:15:24,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:15:24 BoogieIcfgContainer [2021-10-16 02:15:24,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:15:24,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:15:24,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:15:24,129 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:15:24,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:28" (3/4) ... [2021-10-16 02:15:24,132 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:15:24,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:15:24,133 INFO L168 Benchmark]: Toolchain (without parser) took 357173.41 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 36.5 MB in the beginning and 48.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:24,133 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 73.4 MB. Free memory was 54.3 MB in the beginning and 54.1 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:15:24,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.52 ms. Allocated memory is still 73.4 MB. Free memory was 36.4 MB in the beginning and 49.1 MB in the end (delta: -12.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:24,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.60 ms. Allocated memory is still 73.4 MB. Free memory was 49.1 MB in the beginning and 46.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:24,134 INFO L168 Benchmark]: Boogie Preprocessor took 51.43 ms. Allocated memory is still 73.4 MB. Free memory was 46.7 MB in the beginning and 45.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:24,134 INFO L168 Benchmark]: RCFGBuilder took 1097.46 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 50.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:24,135 INFO L168 Benchmark]: TraceAbstraction took 355306.28 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 50.2 MB in the beginning and 48.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:15:24,135 INFO L168 Benchmark]: Witness Printer took 3.88 ms. Allocated memory is still 88.1 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:15:24,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 73.4 MB. Free memory was 54.3 MB in the beginning and 54.1 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 639.52 ms. Allocated memory is still 73.4 MB. Free memory was 36.4 MB in the beginning and 49.1 MB in the end (delta: -12.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.60 ms. Allocated memory is still 73.4 MB. Free memory was 49.1 MB in the beginning and 46.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.43 ms. Allocated memory is still 73.4 MB. Free memory was 46.7 MB in the beginning and 45.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1097.46 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 50.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 355306.28 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 50.2 MB in the beginning and 48.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.88 ms. Allocated memory is still 88.1 MB. Free memory is still 48.8 MB. There was no memory consumed. 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: 355228.5ms, OverallIterations: 18, TraceHistogramMax: 1, EmptinessCheckTime: 33.2ms, AutomataDifference: 56797.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1067 SDtfs, 3404 SDslu, 4150 SDs, 0 SdLazy, 5122 SolverSat, 451 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 24552.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 460 SyntacticMatches, 17 SemanticMatches, 257 ConstructedPredicates, 23 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 192091.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=17, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 163.5ms AutomataMinimizationTime, 17 MinimizatonAttempts, 668 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 205.6ms SsaConstructionTime, 1151.6ms SatisfiabilityAnalysisTime, 193057.5ms 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 [2021-10-16 02:15:24,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee09791-2692-41bf-8a90-0b2dcf8a6361/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...