./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V --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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:30:55,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:30:55,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:30:55,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:30:55,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:30:55,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:30:55,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:30:55,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:30:55,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:30:55,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:30:55,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:30:55,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:30:55,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:30:55,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:30:55,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:30:55,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:30:55,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:30:55,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:30:55,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:30:55,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:30:55,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:30:55,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:30:55,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:30:55,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:30:55,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:30:55,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:30:55,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:30:55,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:30:55,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:30:55,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:30:55,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:30:55,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:30:55,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:30:55,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:30:55,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:30:55,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:30:55,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:30:55,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:30:55,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:30:55,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:30:55,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:30:55,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:30:55,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:30:55,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:30:55,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:30:55,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:30:55,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:30:55,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:30:55,587 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:30:55,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:30:55,587 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:30:55,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:30:55,589 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:30:55,589 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:30:55,589 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:30:55,590 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:30:55,590 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:30:55,590 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:30:55,590 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:30:55,591 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:30:55,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:30:55,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:30:55,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:30:55,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:30:55,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:30:55,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:30:55,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:30:55,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:30:55,593 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:30:55,593 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:30:55,594 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:30:55,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:30:55,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:30:55,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:30:55,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:30:55,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:30:55,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:30:55,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:30:55,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:30:55,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:30:55,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:30:55,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:30:55,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:30:55,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:30:55,599 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_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2021-11-23 02:30:55,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:30:55,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:30:55,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:30:55,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:30:55,896 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:30:55,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-23 02:30:55,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data/644269f6c/35a4c89050c74a52befc4b2511683aea/FLAGa1363159c [2021-11-23 02:30:56,562 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:30:56,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-23 02:30:56,588 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data/644269f6c/35a4c89050c74a52befc4b2511683aea/FLAGa1363159c [2021-11-23 02:30:56,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data/644269f6c/35a4c89050c74a52befc4b2511683aea [2021-11-23 02:30:56,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:30:56,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:30:56,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:30:56,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:30:56,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:30:56,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:56" (1/1) ... [2021-11-23 02:30:56,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d17fc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:56, skipping insertion in model container [2021-11-23 02:30:56,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:56" (1/1) ... [2021-11-23 02:30:56,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:30:56,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:30:57,401 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-23 02:30:57,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-23 02:30:57,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:30:57,591 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 02:30:57,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@545eb81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:57, skipping insertion in model container [2021-11-23 02:30:57,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:30:57,592 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 02:30:57,594 INFO L158 Benchmark]: Toolchain (without parser) took 807.30ms. Allocated memory is still 111.1MB. Free memory was 71.7MB in the beginning and 75.2MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:30:57,595 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:30:57,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 804.59ms. Allocated memory is still 111.1MB. Free memory was 71.5MB in the beginning and 75.3MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:30:57,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 804.59ms. Allocated memory is still 111.1MB. Free memory was 71.5MB in the beginning and 75.3MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V --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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:30:59,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:30:59,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:30:59,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:30:59,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:30:59,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:30:59,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:30:59,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:30:59,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:30:59,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:30:59,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:30:59,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:30:59,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:30:59,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:30:59,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:30:59,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:30:59,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:30:59,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:30:59,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:30:59,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:30:59,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:30:59,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:30:59,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:30:59,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:30:59,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:30:59,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:30:59,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:30:59,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:30:59,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:30:59,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:30:59,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:30:59,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:30:59,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:30:59,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:30:59,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:30:59,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:30:59,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:30:59,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:30:59,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:30:59,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:30:59,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:30:59,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 02:30:59,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:30:59,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:30:59,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:30:59,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:30:59,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:30:59,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:30:59,952 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:30:59,953 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:30:59,953 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:30:59,953 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:30:59,953 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:30:59,954 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:30:59,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:30:59,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:30:59,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:30:59,955 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:30:59,955 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:30:59,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:30:59,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:30:59,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:30:59,956 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:30:59,957 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:30:59,957 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:30:59,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:30:59,957 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:30:59,957 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:30:59,958 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:30:59,958 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:30:59,958 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:30:59,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:30:59,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:30:59,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:30:59,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:30:59,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:30:59,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:30:59,960 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:30:59,960 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:30:59,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:30:59,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:30:59,961 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_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2021-11-23 02:31:00,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:31:00,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:31:00,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:31:00,381 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:31:00,382 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:31:00,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-23 02:31:00,468 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data/837460530/55b69ea0549041e587b47f4ff1d84205/FLAGfc8f9a6de [2021-11-23 02:31:01,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:31:01,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-23 02:31:01,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data/837460530/55b69ea0549041e587b47f4ff1d84205/FLAGfc8f9a6de [2021-11-23 02:31:01,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/data/837460530/55b69ea0549041e587b47f4ff1d84205 [2021-11-23 02:31:01,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:31:01,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:31:01,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:31:01,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:31:01,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:31:01,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:01" (1/1) ... [2021-11-23 02:31:01,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7984f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:01, skipping insertion in model container [2021-11-23 02:31:01,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:01" (1/1) ... [2021-11-23 02:31:01,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:31:01,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:31:01,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-23 02:31:01,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-23 02:31:02,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:31:02,031 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:31:02,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:31:02,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-23 02:31:02,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-23 02:31:02,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:31:02,230 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:31:02,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-23 02:31:02,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-23 02:31:02,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:31:02,389 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:31:02,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02 WrapperNode [2021-11-23 02:31:02,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:31:02,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:31:02,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:31:02,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:31:02,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,550 INFO L137 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1041 [2021-11-23 02:31:02,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:31:02,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:31:02,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:31:02,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:31:02,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:31:02,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:31:02,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:31:02,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:31:02,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (1/1) ... [2021-11-23 02:31:02,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:31:02,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:02,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:31:02,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:31:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 02:31:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:31:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:31:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:31:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:31:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:31:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:31:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:31:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:31:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:31:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:31:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:31:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:31:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:31:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:31:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:31:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:31:03,055 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:31:03,057 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:31:03,062 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 02:31:08,393 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:31:08,416 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:31:08,423 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-23 02:31:08,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:08 BoogieIcfgContainer [2021-11-23 02:31:08,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:31:08,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:31:08,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:31:08,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:31:08,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:31:01" (1/3) ... [2021-11-23 02:31:08,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fb6f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:08, skipping insertion in model container [2021-11-23 02:31:08,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:02" (2/3) ... [2021-11-23 02:31:08,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fb6f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:08, skipping insertion in model container [2021-11-23 02:31:08,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:08" (3/3) ... [2021-11-23 02:31:08,443 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2021-11-23 02:31:08,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:31:08,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-23 02:31:08,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:31:08,548 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:31:08,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-23 02:31:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 1072 states, 530 states have (on average 2.2452830188679247) internal successors, (1190), 1066 states have internal predecessors, (1190), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:31:08,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:08,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:31:08,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-23 02:31:08,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:08,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255749522] [2021-11-23 02:31:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:08,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:08,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:08,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:08,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:31:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:08,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:31:08,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:08,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:08,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:08,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:08,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255749522] [2021-11-23 02:31:08,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255749522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:08,880 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:08,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:31:08,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891190348] [2021-11-23 02:31:08,882 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:08,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:08,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:08,939 INFO L87 Difference]: Start difference. First operand has 1072 states, 530 states have (on average 2.2452830188679247) internal successors, (1190), 1066 states have internal predecessors, (1190), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-23 02:31:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:10,824 INFO L93 Difference]: Finished difference Result 1067 states and 1132 transitions. [2021-11-23 02:31:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:10,826 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 [2021-11-23 02:31:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:10,849 INFO L225 Difference]: With dead ends: 1067 [2021-11-23 02:31:10,849 INFO L226 Difference]: Without dead ends: 1065 [2021-11-23 02:31:10,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:10,854 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 990 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:10,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 705 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 02:31:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-23 02:31:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1057. [2021-11-23 02:31:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 530 states have (on average 2.0886792452830187) internal successors, (1107), 1051 states have internal predecessors, (1107), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1123 transitions. [2021-11-23 02:31:10,959 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1123 transitions. Word has length 3 [2021-11-23 02:31:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:10,960 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1123 transitions. [2021-11-23 02:31:10,960 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) [2021-11-23 02:31:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1123 transitions. [2021-11-23 02:31:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:31:10,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:10,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:31:10,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 02:31:11,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:11,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-23 02:31:11,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:11,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745840468] [2021-11-23 02:31:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:11,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:11,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:11,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:31:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:11,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:31:11,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:11,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:11,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:11,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:11,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745840468] [2021-11-23 02:31:11,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745840468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:11,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:11,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 02:31:11,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751929206] [2021-11-23 02:31:11,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:11,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:31:11,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:31:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:11,388 INFO L87 Difference]: Start difference. First operand 1057 states and 1123 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) [2021-11-23 02:31:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:16,589 INFO L93 Difference]: Finished difference Result 1542 states and 1651 transitions. [2021-11-23 02:31:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:16,592 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 [2021-11-23 02:31:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:16,601 INFO L225 Difference]: With dead ends: 1542 [2021-11-23 02:31:16,602 INFO L226 Difference]: Without dead ends: 1542 [2021-11-23 02:31:16,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:16,604 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 1167 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:16,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1592 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 02:31:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-11-23 02:31:16,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1092. [2021-11-23 02:31:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 574 states have (on average 2.0662020905923346) internal successors, (1186), 1086 states have internal predecessors, (1186), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1202 transitions. [2021-11-23 02:31:16,668 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1202 transitions. Word has length 3 [2021-11-23 02:31:16,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:16,669 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1202 transitions. [2021-11-23 02:31:16,669 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) [2021-11-23 02:31:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1202 transitions. [2021-11-23 02:31:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:31:16,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:16,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:16,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:16,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:16,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-23 02:31:16,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:16,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086735576] [2021-11-23 02:31:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:16,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:16,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:16,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:16,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:31:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:17,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:31:17,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:17,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:17,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:17,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:17,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086735576] [2021-11-23 02:31:17,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086735576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:17,101 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:17,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:31:17,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42633713] [2021-11-23 02:31:17,102 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:17,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:31:17,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:17,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:31:17,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:17,106 INFO L87 Difference]: Start difference. First operand 1092 states and 1202 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:19,442 INFO L93 Difference]: Finished difference Result 1420 states and 1555 transitions. [2021-11-23 02:31:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 02:31:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:19,452 INFO L225 Difference]: With dead ends: 1420 [2021-11-23 02:31:19,452 INFO L226 Difference]: Without dead ends: 1420 [2021-11-23 02:31:19,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:19,457 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 992 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:19,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1201 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:31:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-23 02:31:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1043. [2021-11-23 02:31:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 574 states have (on average 1.975609756097561) internal successors, (1134), 1037 states have internal predecessors, (1134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1150 transitions. [2021-11-23 02:31:19,500 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1150 transitions. Word has length 8 [2021-11-23 02:31:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:19,500 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1150 transitions. [2021-11-23 02:31:19,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1150 transitions. [2021-11-23 02:31:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:31:19,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:19,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:19,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:19,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:19,715 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-23 02:31:19,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:19,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427682943] [2021-11-23 02:31:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:19,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:19,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:19,726 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:19,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:31:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:19,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:31:19,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:19,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:19,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:19,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:19,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427682943] [2021-11-23 02:31:19,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427682943] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:19,999 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:19,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 02:31:20,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919820219] [2021-11-23 02:31:20,000 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:20,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:31:20,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:20,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:31:20,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:20,001 INFO L87 Difference]: Start difference. First operand 1043 states and 1150 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:24,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:24,612 INFO L93 Difference]: Finished difference Result 1463 states and 1562 transitions. [2021-11-23 02:31:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:24,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 8 [2021-11-23 02:31:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:24,624 INFO L225 Difference]: With dead ends: 1463 [2021-11-23 02:31:24,624 INFO L226 Difference]: Without dead ends: 1463 [2021-11-23 02:31:24,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:24,626 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 1407 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:24,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 1556 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 02:31:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-11-23 02:31:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1033. [2021-11-23 02:31:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 574 states have (on average 1.9529616724738676) internal successors, (1121), 1027 states have internal predecessors, (1121), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1137 transitions. [2021-11-23 02:31:24,658 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1137 transitions. Word has length 8 [2021-11-23 02:31:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:24,659 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1137 transitions. [2021-11-23 02:31:24,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1137 transitions. [2021-11-23 02:31:24,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:31:24,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:24,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:24,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:24,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:24,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash 871377621, now seen corresponding path program 1 times [2021-11-23 02:31:24,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:24,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116674564] [2021-11-23 02:31:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:24,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:24,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:24,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:24,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:31:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:24,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:31:24,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:25,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:25,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:25,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116674564] [2021-11-23 02:31:25,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116674564] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:25,151 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:25,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:31:25,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093422062] [2021-11-23 02:31:25,152 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:25,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:31:25,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:31:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:25,153 INFO L87 Difference]: Start difference. First operand 1033 states and 1137 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:25,958 INFO L93 Difference]: Finished difference Result 1479 states and 1615 transitions. [2021-11-23 02:31:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:31:25,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2021-11-23 02:31:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:25,968 INFO L225 Difference]: With dead ends: 1479 [2021-11-23 02:31:25,969 INFO L226 Difference]: Without dead ends: 1479 [2021-11-23 02:31:25,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:25,970 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 547 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:25,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3025 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 02:31:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-23 02:31:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1269. [2021-11-23 02:31:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 810 states have (on average 1.9395061728395062) internal successors, (1571), 1263 states have internal predecessors, (1571), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1587 transitions. [2021-11-23 02:31:26,017 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1587 transitions. Word has length 11 [2021-11-23 02:31:26,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:26,018 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1587 transitions. [2021-11-23 02:31:26,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1587 transitions. [2021-11-23 02:31:26,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:31:26,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:26,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:26,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:26,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:26,232 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr532ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1242903717, now seen corresponding path program 1 times [2021-11-23 02:31:26,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:26,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034569124] [2021-11-23 02:31:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:26,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:26,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:26,234 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:26,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:31:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:26,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:31:26,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:26,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:31:26,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:31:26,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:31:26,453 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 02:31:26,453 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-23 02:31:26,521 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 02:31:26,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-23 02:31:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:26,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:26,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:26,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034569124] [2021-11-23 02:31:26,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034569124] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:26,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:26,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:31:26,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163862502] [2021-11-23 02:31:26,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:26,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:31:26,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:26,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:31:26,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:31:26,629 INFO L87 Difference]: Start difference. First operand 1269 states and 1587 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:28,039 INFO L93 Difference]: Finished difference Result 1643 states and 2031 transitions. [2021-11-23 02:31:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:28,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 12 [2021-11-23 02:31:28,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:28,050 INFO L225 Difference]: With dead ends: 1643 [2021-11-23 02:31:28,050 INFO L226 Difference]: Without dead ends: 1643 [2021-11-23 02:31:28,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:31:28,051 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 746 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:28,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 3895 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:31:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-23 02:31:28,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1268. [2021-11-23 02:31:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 809 states have (on average 1.9394313967861558) internal successors, (1569), 1262 states have internal predecessors, (1569), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1585 transitions. [2021-11-23 02:31:28,089 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1585 transitions. Word has length 12 [2021-11-23 02:31:28,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:28,090 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1585 transitions. [2021-11-23 02:31:28,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1585 transitions. [2021-11-23 02:31:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:31:28,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:28,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:28,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:28,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:28,303 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-23 02:31:28,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:28,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38935311] [2021-11-23 02:31:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:28,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:28,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:28,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:28,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:31:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:28,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:31:28,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:28,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:28,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:28,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38935311] [2021-11-23 02:31:28,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38935311] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:28,545 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:28,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:31:28,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113824512] [2021-11-23 02:31:28,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:28,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:31:28,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:31:28,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:28,547 INFO L87 Difference]: Start difference. First operand 1268 states and 1585 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-11-23 02:31:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:28,584 INFO L93 Difference]: Finished difference Result 1208 states and 1499 transitions. [2021-11-23 02:31:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 18 [2021-11-23 02:31:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:28,593 INFO L225 Difference]: With dead ends: 1208 [2021-11-23 02:31:28,594 INFO L226 Difference]: Without dead ends: 1208 [2021-11-23 02:31:28,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:28,595 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 976 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:28,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1071 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:31:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-23 02:31:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2021-11-23 02:31:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 773 states have (on average 1.9184993531694696) internal successors, (1483), 1202 states have internal predecessors, (1483), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1499 transitions. [2021-11-23 02:31:28,625 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1499 transitions. Word has length 18 [2021-11-23 02:31:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:28,625 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1499 transitions. [2021-11-23 02:31:28,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-11-23 02:31:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1499 transitions. [2021-11-23 02:31:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:31:28,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:28,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:28,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:28,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:28,839 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:28,840 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-23 02:31:28,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546778744] [2021-11-23 02:31:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:28,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:28,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:28,841 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:28,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:31:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:28,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:31:28,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:29,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:29,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546778744] [2021-11-23 02:31:29,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546778744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:29,073 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:29,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 02:31:29,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130173253] [2021-11-23 02:31:29,074 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:29,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:31:29,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:31:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:29,075 INFO L87 Difference]: Start difference. First operand 1208 states and 1499 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:29,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:29,190 INFO L93 Difference]: Finished difference Result 1180 states and 1443 transitions. [2021-11-23 02:31:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:29,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2021-11-23 02:31:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:29,198 INFO L225 Difference]: With dead ends: 1180 [2021-11-23 02:31:29,198 INFO L226 Difference]: Without dead ends: 1180 [2021-11-23 02:31:29,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:31:29,199 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 1884 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:29,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 1949 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:31:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-11-23 02:31:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2021-11-23 02:31:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 757 states have (on average 1.8824306472919419) internal successors, (1425), 1172 states have internal predecessors, (1425), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1441 transitions. [2021-11-23 02:31:29,229 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1441 transitions. Word has length 20 [2021-11-23 02:31:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:29,230 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1441 transitions. [2021-11-23 02:31:29,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1441 transitions. [2021-11-23 02:31:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:31:29,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:29,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:29,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:29,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:29,445 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:29,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:29,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-23 02:31:29,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:29,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459910922] [2021-11-23 02:31:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:29,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:29,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:29,447 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:29,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 02:31:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:29,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:31:29,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:29,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:29,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:29,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:29,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459910922] [2021-11-23 02:31:29,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459910922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:29,841 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:29,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:31:29,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859808824] [2021-11-23 02:31:29,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:29,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:31:29,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:29,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:31:29,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:29,844 INFO L87 Difference]: Start difference. First operand 1178 states and 1441 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:32,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:32,072 INFO L93 Difference]: Finished difference Result 1660 states and 2054 transitions. [2021-11-23 02:31:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:31:32,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 02:31:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:32,083 INFO L225 Difference]: With dead ends: 1660 [2021-11-23 02:31:32,083 INFO L226 Difference]: Without dead ends: 1660 [2021-11-23 02:31:32,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:32,084 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1738 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:32,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 1063 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 02:31:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-11-23 02:31:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1174. [2021-11-23 02:31:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 757 states have (on average 1.8718626155878468) internal successors, (1417), 1168 states have internal predecessors, (1417), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1433 transitions. [2021-11-23 02:31:32,116 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1433 transitions. Word has length 34 [2021-11-23 02:31:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:32,117 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1433 transitions. [2021-11-23 02:31:32,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1433 transitions. [2021-11-23 02:31:32,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:31:32,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:32,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:32,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-23 02:31:32,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:32,330 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-23 02:31:32,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:32,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239166368] [2021-11-23 02:31:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:32,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:32,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:32,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:32,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 02:31:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:32,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:31:32,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:32,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:32,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:33,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:33,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239166368] [2021-11-23 02:31:33,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239166368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:33,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:33,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:31:33,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027962789] [2021-11-23 02:31:33,275 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:33,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:31:33,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:33,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:31:33,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:31:33,277 INFO L87 Difference]: Start difference. First operand 1174 states and 1433 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:40,945 INFO L93 Difference]: Finished difference Result 1791 states and 2207 transitions. [2021-11-23 02:31:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:31:40,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-11-23 02:31:40,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:40,955 INFO L225 Difference]: With dead ends: 1791 [2021-11-23 02:31:40,955 INFO L226 Difference]: Without dead ends: 1791 [2021-11-23 02:31:40,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:31:40,956 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 1279 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:40,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 2916 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 02:31:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-23 02:31:40,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1170. [2021-11-23 02:31:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 757 states have (on average 1.8612945838837516) internal successors, (1409), 1164 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1425 transitions. [2021-11-23 02:31:40,987 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1425 transitions. Word has length 34 [2021-11-23 02:31:40,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:40,988 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 1425 transitions. [2021-11-23 02:31:40,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1425 transitions. [2021-11-23 02:31:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 02:31:40,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:40,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:41,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:41,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:41,202 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-23 02:31:41,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:41,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611383332] [2021-11-23 02:31:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:41,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:41,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:41,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:41,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:31:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:41,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:31:41,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:41,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:41,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:41,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611383332] [2021-11-23 02:31:41,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611383332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:41,631 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:41,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:31:41,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425799322] [2021-11-23 02:31:41,632 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:41,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:31:41,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:41,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:31:41,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:31:41,633 INFO L87 Difference]: Start difference. First operand 1170 states and 1425 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:41,711 INFO L93 Difference]: Finished difference Result 1158 states and 1405 transitions. [2021-11-23 02:31:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:41,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-23 02:31:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:41,718 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 02:31:41,718 INFO L226 Difference]: Without dead ends: 1158 [2021-11-23 02:31:41,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:41,720 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 923 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:41,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 1927 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:31:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-23 02:31:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2021-11-23 02:31:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 745 states have (on average 1.8644295302013423) internal successors, (1389), 1152 states have internal predecessors, (1389), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1405 transitions. [2021-11-23 02:31:41,745 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1405 transitions. Word has length 52 [2021-11-23 02:31:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:41,746 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1405 transitions. [2021-11-23 02:31:41,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1405 transitions. [2021-11-23 02:31:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 02:31:41,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:41,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:41,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:41,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:41,962 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:41,965 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-23 02:31:41,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:41,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315262300] [2021-11-23 02:31:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:41,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:41,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:41,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:42,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 02:31:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:42,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:31:42,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:42,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:42,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:43,025 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:31:43,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-23 02:31:43,054 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:31:43,054 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 26 treesize of output 22 [2021-11-23 02:31:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:43,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:48,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:48,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315262300] [2021-11-23 02:31:48,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315262300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:48,446 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:48,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:31:48,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207529226] [2021-11-23 02:31:48,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:48,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:31:48,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:48,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:31:48,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 02:31:48,449 INFO L87 Difference]: Start difference. First operand 1158 states and 1405 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 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) [2021-11-23 02:31:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:54,208 INFO L93 Difference]: Finished difference Result 1769 states and 2114 transitions. [2021-11-23 02:31:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:31:54,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 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) Word has length 60 [2021-11-23 02:31:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:54,216 INFO L225 Difference]: With dead ends: 1769 [2021-11-23 02:31:54,216 INFO L226 Difference]: Without dead ends: 1769 [2021-11-23 02:31:54,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-23 02:31:54,217 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 1532 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1074 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:54,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1868 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1434 Invalid, 0 Unknown, 1074 Unchecked, 5.6s Time] [2021-11-23 02:31:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-11-23 02:31:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1136. [2021-11-23 02:31:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 755 states have (on average 1.8211920529801324) internal successors, (1375), 1130 states have internal predecessors, (1375), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1391 transitions. [2021-11-23 02:31:54,246 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1391 transitions. Word has length 60 [2021-11-23 02:31:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:54,246 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1391 transitions. [2021-11-23 02:31:54,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 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) [2021-11-23 02:31:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1391 transitions. [2021-11-23 02:31:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:31:54,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:54,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:54,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:54,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:54,462 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:54,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-23 02:31:54,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:54,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207442442] [2021-11-23 02:31:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:54,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:54,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:54,466 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:54,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:31:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:54,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:31:54,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:55,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:55,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 02:31:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:55,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:55,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207442442] [2021-11-23 02:31:55,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207442442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:55,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:55,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:31:55,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431942808] [2021-11-23 02:31:55,427 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:55,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:31:55,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:55,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:31:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:31:55,429 INFO L87 Difference]: Start difference. First operand 1136 states and 1391 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:57,323 INFO L93 Difference]: Finished difference Result 1134 states and 1389 transitions. [2021-11-23 02:31:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:31:57,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 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) Word has length 62 [2021-11-23 02:31:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:57,329 INFO L225 Difference]: With dead ends: 1134 [2021-11-23 02:31:57,330 INFO L226 Difference]: Without dead ends: 1134 [2021-11-23 02:31:57,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:31:57,330 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 2527 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:57,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 562 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 02:31:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-23 02:31:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-23 02:31:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 755 states have (on average 1.818543046357616) internal successors, (1373), 1128 states have internal predecessors, (1373), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:31:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1389 transitions. [2021-11-23 02:31:57,363 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1389 transitions. Word has length 62 [2021-11-23 02:31:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:57,363 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1389 transitions. [2021-11-23 02:31:57,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:31:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1389 transitions. [2021-11-23 02:31:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:31:57,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:57,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:57,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:57,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:31:57,578 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:31:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:57,579 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-23 02:31:57,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:31:57,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54482252] [2021-11-23 02:31:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:57,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:31:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:31:57,581 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:31:57,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 02:31:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:57,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:31:57,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:57,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:57,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 02:31:57,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:31:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:57,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:31:58,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:31:58,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54482252] [2021-11-23 02:31:58,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54482252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:58,073 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:58,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:31:58,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072236319] [2021-11-23 02:31:58,074 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:58,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:31:58,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:58,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:31:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:58,075 INFO L87 Difference]: Start difference. First operand 1134 states and 1389 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:01,259 INFO L93 Difference]: Finished difference Result 1133 states and 1388 transitions. [2021-11-23 02:32:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:32:01,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-23 02:32:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:01,264 INFO L225 Difference]: With dead ends: 1133 [2021-11-23 02:32:01,265 INFO L226 Difference]: Without dead ends: 1133 [2021-11-23 02:32:01,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:32:01,265 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:01,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2377 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 02:32:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-11-23 02:32:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-11-23 02:32:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 755 states have (on average 1.8172185430463577) internal successors, (1372), 1127 states have internal predecessors, (1372), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:32:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1388 transitions. [2021-11-23 02:32:01,286 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1388 transitions. Word has length 65 [2021-11-23 02:32:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:01,286 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1388 transitions. [2021-11-23 02:32:01,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1388 transitions. [2021-11-23 02:32:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:32:01,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:01,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:01,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:01,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:32:01,502 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:32:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-23 02:32:01,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:32:01,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481614785] [2021-11-23 02:32:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:01,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:32:01,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:32:01,504 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:32:01,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 02:32:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:01,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:32:01,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:01,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:32:01,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 02:32:01,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:32:01,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 02:32:01,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-23 02:32:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:02,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:02,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:32:02,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481614785] [2021-11-23 02:32:02,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481614785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:02,327 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:02,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 02:32:02,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816202544] [2021-11-23 02:32:02,328 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:02,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:32:02,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:32:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:32:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:32:02,329 INFO L87 Difference]: Start difference. First operand 1133 states and 1388 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:10,413 INFO L93 Difference]: Finished difference Result 1132 states and 1387 transitions. [2021-11-23 02:32:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:32:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 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 65 [2021-11-23 02:32:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:10,419 INFO L225 Difference]: With dead ends: 1132 [2021-11-23 02:32:10,419 INFO L226 Difference]: Without dead ends: 1132 [2021-11-23 02:32:10,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:32:10,420 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:10,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2400 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 02:32:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-11-23 02:32:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2021-11-23 02:32:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 754 states have (on average 1.8183023872679045) internal successors, (1371), 1126 states have internal predecessors, (1371), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:32:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1387 transitions. [2021-11-23 02:32:10,439 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1387 transitions. Word has length 65 [2021-11-23 02:32:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:10,440 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1387 transitions. [2021-11-23 02:32:10,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:32:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1387 transitions. [2021-11-23 02:32:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:32:10,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:10,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:10,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-23 02:32:10,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:32:10,654 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:32:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:10,655 INFO L85 PathProgramCache]: Analyzing trace with hash 845908815, now seen corresponding path program 1 times [2021-11-23 02:32:10,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:32:10,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499665333] [2021-11-23 02:32:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:10,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:32:10,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:32:10,657 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:32:10,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 02:32:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:10,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:32:10,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:11,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:11,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:32:11,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499665333] [2021-11-23 02:32:11,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499665333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:11,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:11,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:32:11,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81293612] [2021-11-23 02:32:11,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:11,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:32:11,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:32:11,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:32:11,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:32:11,246 INFO L87 Difference]: Start difference. First operand 1132 states and 1387 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:32:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:11,357 INFO L93 Difference]: Finished difference Result 1142 states and 1400 transitions. [2021-11-23 02:32:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:32:11,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-23 02:32:11,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:11,366 INFO L225 Difference]: With dead ends: 1142 [2021-11-23 02:32:11,367 INFO L226 Difference]: Without dead ends: 1142 [2021-11-23 02:32:11,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:32:11,368 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 9 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:11,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2754 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:32:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-11-23 02:32:11,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1142. [2021-11-23 02:32:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 762 states have (on average 1.81496062992126) internal successors, (1383), 1135 states have internal predecessors, (1383), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-23 02:32:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1400 transitions. [2021-11-23 02:32:11,395 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1400 transitions. Word has length 73 [2021-11-23 02:32:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:11,396 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1400 transitions. [2021-11-23 02:32:11,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:32:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1400 transitions. [2021-11-23 02:32:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 02:32:11,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:11,397 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:11,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-23 02:32:11,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:32:11,617 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:32:11,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1863463505, now seen corresponding path program 1 times [2021-11-23 02:32:11,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:32:11,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622561035] [2021-11-23 02:32:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:11,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:32:11,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:32:11,620 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:32:11,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 02:32:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:32:11,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:12,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:12,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:32:12,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622561035] [2021-11-23 02:32:12,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622561035] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:12,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [509633937] [2021-11-23 02:32:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:12,329 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:32:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:32:12,330 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:32:12,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-23 02:32:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:12,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:32:12,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:12,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:12,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [509633937] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:12,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855422475] [2021-11-23 02:32:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:12,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:12,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:12,956 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:12,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 02:32:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:13,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:32:13,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:13,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:13,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855422475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:13,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:32:13,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-23 02:32:13,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290755737] [2021-11-23 02:32:13,619 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:32:13,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:32:13,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:32:13,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:32:13,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:32:13,620 INFO L87 Difference]: Start difference. First operand 1142 states and 1400 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 02:32:14,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:14,373 INFO L93 Difference]: Finished difference Result 1156 states and 1417 transitions. [2021-11-23 02:32:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:32:14,374 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-23 02:32:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:14,379 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 02:32:14,380 INFO L226 Difference]: Without dead ends: 1150 [2021-11-23 02:32:14,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:32:14,381 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 26 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5504 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:14,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 5504 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:32:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-11-23 02:32:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1148. [2021-11-23 02:32:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 768 states have (on average 1.8098958333333333) internal successors, (1390), 1141 states have internal predecessors, (1390), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-23 02:32:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1407 transitions. [2021-11-23 02:32:14,406 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1407 transitions. Word has length 75 [2021-11-23 02:32:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:14,406 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1407 transitions. [2021-11-23 02:32:14,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 02:32:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1407 transitions. [2021-11-23 02:32:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:32:14,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:14,407 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:14,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:14,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:14,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:15,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:32:15,022 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:32:15,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:15,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1287850607, now seen corresponding path program 2 times [2021-11-23 02:32:15,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:32:15,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065106106] [2021-11-23 02:32:15,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:32:15,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:32:15,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:32:15,024 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:32:15,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 02:32:15,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:32:15,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:32:15,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:32:15,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:15,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:16,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:32:16,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065106106] [2021-11-23 02:32:16,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065106106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:16,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [679742305] [2021-11-23 02:32:16,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:32:16,139 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:32:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:32:16,140 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:32:16,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-23 02:32:16,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:32:16,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:32:16,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:32:16,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:17,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:32:17,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [679742305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:17,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232197268] [2021-11-23 02:32:17,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:32:17,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:17,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:17,317 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:17,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-23 02:32:39,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:32:39,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:32:39,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 02:32:39,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:39,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:32:40,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:32:40,217 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:32:40,217 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 14 treesize of output 14 [2021-11-23 02:32:40,302 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 13 treesize of output 9 [2021-11-23 02:32:40,322 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 23 treesize of output 19 [2021-11-23 02:32:40,592 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 [2021-11-23 02:32:40,596 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 13 [2021-11-23 02:34:49,014 WARN L227 SmtUtils]: Spent 20.35s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:34:49,015 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-23 02:34:49,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-23 02:35:10,778 WARN L227 SmtUtils]: Spent 21.75s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:35:10,779 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-23 02:35:10,779 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 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-23 02:35:24,384 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 02:35:24,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-23 02:35:24,407 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 02:35:24,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-23 02:35:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 14 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:35:36,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:35:50,436 WARN L227 SmtUtils]: Spent 12.83s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 02:38:25,929 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd (_ bv20 32) .cse2)))) (forall ((v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9) .cse13 .cse9) .cse14 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))))) is different from false [2021-11-23 02:39:40,363 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse5 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse7))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse6) (bvadd .cse6 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))))) is different from false [2021-11-23 02:39:47,224 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse18))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32)))))))) is different from false [2021-11-23 02:39:56,985 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd (_ bv20 32) .cse10))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from true [2021-11-23 02:40:51,732 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 02:40:51,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-23 02:40:51,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-23 02:40:51,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137161211] [2021-11-23 02:40:51,733 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-23 02:40:51,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 02:40:51,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:40:51,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 02:40:51,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1121, Unknown=133, NotChecked=300, Total=1722 [2021-11-23 02:40:51,735 INFO L87 Difference]: Start difference. First operand 1148 states and 1407 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:41:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:33,233 INFO L93 Difference]: Finished difference Result 1174 states and 1443 transitions. [2021-11-23 02:41:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 02:41:33,234 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-23 02:41:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:33,243 INFO L225 Difference]: With dead ends: 1174 [2021-11-23 02:41:33,243 INFO L226 Difference]: Without dead ends: 1170 [2021-11-23 02:41:33,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 415.2s TimeCoverageRelationStatistics Valid=509, Invalid=2558, Unknown=141, NotChecked=452, Total=3660 [2021-11-23 02:41:33,246 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 79 mSDsluCounter, 6452 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 7377 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:33,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 7377 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:41:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2021-11-23 02:41:33,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1160. [2021-11-23 02:41:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 780 states have (on average 1.8025641025641026) internal successors, (1406), 1153 states have internal predecessors, (1406), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-23 02:41:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1423 transitions. [2021-11-23 02:41:33,279 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1423 transitions. Word has length 79 [2021-11-23 02:41:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:33,279 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1423 transitions. [2021-11-23 02:41:33,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:41:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1423 transitions. [2021-11-23 02:41:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:41:33,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:33,281 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:33,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:33,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:33,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:33,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:41:33,909 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-23 02:41:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1034394641, now seen corresponding path program 3 times [2021-11-23 02:41:33,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:41:33,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313171006] [2021-11-23 02:41:33,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:41:33,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:41:33,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:41:33,912 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:41:33,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 02:41:34,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 02:41:34,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:41:34,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:41:34,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:35,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:39,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:41:39,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313171006] [2021-11-23 02:41:39,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313171006] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:39,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [274864584] [2021-11-23 02:41:39,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:41:39,192 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:41:39,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:41:39,193 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:41:39,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-23 02:41:41,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 02:41:41,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:41:42,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:41:42,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:42,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:43,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [274864584] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:43,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304809056] [2021-11-23 02:41:43,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:41:43,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:43,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:43,296 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:43,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a023cc-becb-484c-9abb-55421c70c15d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process