./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7 --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 f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:04:30,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:04:30,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:04:30,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:04:30,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:04:30,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:04:30,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:04:30,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:04:30,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:04:30,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:04:30,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:04:30,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:04:30,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:04:30,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:04:30,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:04:30,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:04:30,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:04:30,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:04:30,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:04:30,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:04:30,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:04:30,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:04:30,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:04:30,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:04:30,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:04:30,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:04:30,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:04:30,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:04:30,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:04:30,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:04:30,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:04:30,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:04:30,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:04:30,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:04:30,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:04:30,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:04:30,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:04:30,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:04:30,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:04:30,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:04:30,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:04:30,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 20:04:30,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:04:30,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:04:30,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:04:30,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:04:30,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:04:30,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:04:30,572 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:04:30,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:04:30,572 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:04:30,573 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:04:30,573 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:04:30,573 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:04:30,573 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:04:30,573 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:04:30,574 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:04:30,574 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:04:30,574 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:04:30,574 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:04:30,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 20:04:30,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 20:04:30,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:04:30,575 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:04:30,576 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:04:30,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:04:30,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:04:30,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:04:30,576 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 20:04:30,577 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 20:04:30,577 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 20:04:30,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:04:30,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:04:30,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:04:30,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:04:30,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:04:30,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:04:30,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:04:30,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:04:30,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:04:30,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:04:30,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:04:30,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:04:30,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:04:30,589 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_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2021-11-25 20:04:30,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:04:30,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:04:30,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:04:30,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:04:30,854 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:04:30,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-11-25 20:04:30,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data/731af7136/75e47a3d430c49528536f17521d4383e/FLAG2333c83a6 [2021-11-25 20:04:31,635 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:04:31,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-11-25 20:04:31,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data/731af7136/75e47a3d430c49528536f17521d4383e/FLAG2333c83a6 [2021-11-25 20:04:31,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data/731af7136/75e47a3d430c49528536f17521d4383e [2021-11-25 20:04:31,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:04:31,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:04:31,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:04:31,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:04:31,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:04:31,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:04:31" (1/1) ... [2021-11-25 20:04:31,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5536e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:31, skipping insertion in model container [2021-11-25 20:04:31,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:04:31" (1/1) ... [2021-11-25 20:04:31,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:04:31,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:04:32,290 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_0f8627c8-0b1d-4709-96dd-11c795db942d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-11-25 20:04:32,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:04:32,422 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) [2021-11-25 20:04:32,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b749718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:32, skipping insertion in model container [2021-11-25 20:04:32,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:04:32,423 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-25 20:04:32,425 INFO L158 Benchmark]: Toolchain (without parser) took 582.49ms. Allocated memory is still 104.9MB. Free memory was 81.6MB in the beginning and 60.5MB in the end (delta: 21.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 20:04:32,426 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:04:32,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.33ms. Allocated memory is still 104.9MB. Free memory was 81.4MB in the beginning and 60.5MB in the end (delta: 20.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 20:04:32,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.33ms. Allocated memory is still 104.9MB. Free memory was 81.4MB in the beginning and 60.5MB in the end (delta: 20.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7 --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 f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:04:34,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:04:34,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:04:34,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:04:34,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:04:34,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:04:34,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:04:34,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:04:34,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:04:34,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:04:35,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:04:35,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:04:35,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:04:35,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:04:35,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:04:35,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:04:35,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:04:35,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:04:35,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:04:35,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:04:35,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:04:35,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:04:35,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:04:35,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:04:35,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:04:35,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:04:35,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:04:35,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:04:35,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:04:35,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:04:35,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:04:35,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:04:35,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:04:35,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:04:35,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:04:35,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:04:35,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:04:35,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:04:35,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:04:35,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:04:35,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:04:35,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 20:04:35,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:04:35,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:04:35,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:04:35,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:04:35,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:04:35,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:04:35,107 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:04:35,107 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:04:35,107 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:04:35,108 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:04:35,109 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:04:35,109 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:04:35,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 20:04:35,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 20:04:35,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:04:35,111 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:04:35,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:04:35,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:04:35,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:04:35,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:04:35,112 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 20:04:35,112 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 20:04:35,112 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 20:04:35,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:04:35,112 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 20:04:35,113 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 20:04:35,113 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 20:04:35,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:04:35,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:04:35,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:04:35,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 20:04:35,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:04:35,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:04:35,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:04:35,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:04:35,115 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 20:04:35,115 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 20:04:35,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:04:35,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:04:35,116 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_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2021-11-25 20:04:35,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:04:35,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:04:35,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:04:35,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:04:35,525 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:04:35,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-11-25 20:04:35,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data/6c4ed5ff9/0ff5d952970d45e890775e359397e1fc/FLAG74c1318a7 [2021-11-25 20:04:36,502 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:04:36,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-11-25 20:04:36,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data/6c4ed5ff9/0ff5d952970d45e890775e359397e1fc/FLAG74c1318a7 [2021-11-25 20:04:36,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/data/6c4ed5ff9/0ff5d952970d45e890775e359397e1fc [2021-11-25 20:04:36,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:04:36,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:04:36,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:04:36,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:04:36,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:04:36,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:04:36" (1/1) ... [2021-11-25 20:04:36,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fa3fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:36, skipping insertion in model container [2021-11-25 20:04:36,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:04:36" (1/1) ... [2021-11-25 20:04:36,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:04:36,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:04:37,252 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_0f8627c8-0b1d-4709-96dd-11c795db942d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-11-25 20:04:37,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:04:37,510 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 20:04:37,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:04:37,565 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_0f8627c8-0b1d-4709-96dd-11c795db942d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-11-25 20:04:37,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:04:37,701 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:04:37,738 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_0f8627c8-0b1d-4709-96dd-11c795db942d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-11-25 20:04:37,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:04:37,870 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:04:37,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37 WrapperNode [2021-11-25 20:04:37,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:04:37,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:04:37,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:04:37,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:04:37,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:37,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,091 INFO L137 Inliner]: procedures = 180, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1473 [2021-11-25 20:04:38,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:04:38,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:04:38,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:04:38,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:04:38,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:04:38,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:04:38,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:04:38,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:04:38,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (1/1) ... [2021-11-25 20:04:38,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:04:38,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:04:38,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:04:38,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:04:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 20:04:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 20:04:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:04:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:04:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:04:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:04:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:04:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:04:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:04:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:04:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:04:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:04:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 20:04:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 20:04:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:04:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:04:38,685 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:04:38,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:04:38,692 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 20:04:45,750 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:04:45,782 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:04:45,782 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-11-25 20:04:45,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:04:45 BoogieIcfgContainer [2021-11-25 20:04:45,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:04:45,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:04:45,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:04:45,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:04:45,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:04:36" (1/3) ... [2021-11-25 20:04:45,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeeeee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:04:45, skipping insertion in model container [2021-11-25 20:04:45,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:04:37" (2/3) ... [2021-11-25 20:04:45,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eeeeee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:04:45, skipping insertion in model container [2021-11-25 20:04:45,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:04:45" (3/3) ... [2021-11-25 20:04:45,802 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-3.i [2021-11-25 20:04:45,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:04:45,809 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2021-11-25 20:04:45,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:04:45,893 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 [2021-11-25 20:04:45,894 INFO L340 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2021-11-25 20:04:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 1651 states, 787 states have (on average 2.283354510800508) internal successors, (1797), 1642 states have internal predecessors, (1797), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:04:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:04:46,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:46,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:04:46,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:04:46,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:46,040 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-25 20:04:46,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:04:46,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972734873] [2021-11-25 20:04:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:46,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:04:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:04:46,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:04:46,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 20:04:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:46,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 20:04:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:04:46,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:46,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:04:46,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972734873] [2021-11-25 20:04:46,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972734873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:46,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:46,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:04:46,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225941259] [2021-11-25 20:04:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:46,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:04:46,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:04:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:04:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:04:46,406 INFO L87 Difference]: Start difference. First operand has 1651 states, 787 states have (on average 2.283354510800508) internal successors, (1797), 1642 states have internal predecessors, (1797), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:46,582 INFO L93 Difference]: Finished difference Result 1633 states and 1726 transitions. [2021-11-25 20:04:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:04:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 20:04:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:46,650 INFO L225 Difference]: With dead ends: 1633 [2021-11-25 20:04:46,650 INFO L226 Difference]: Without dead ends: 1631 [2021-11-25 20:04:46,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:04:46,656 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:46,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:04:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-11-25 20:04:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-11-25 20:04:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 778 states have (on average 2.1748071979434447) internal successors, (1692), 1622 states have internal predecessors, (1692), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:04:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 1724 transitions. [2021-11-25 20:04:46,829 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 1724 transitions. Word has length 5 [2021-11-25 20:04:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:46,829 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 1724 transitions. [2021-11-25 20:04:46,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 1724 transitions. [2021-11-25 20:04:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:04:46,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:46,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:04:46,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:04:47,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:04:47,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:04:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-25 20:04:47,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:04:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390447089] [2021-11-25 20:04:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:47,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:04:47,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:04:47,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:04:47,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 20:04:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:47,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:04:47,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:47,289 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 [2021-11-25 20:04:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:04:47,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:47,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:04:47,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390447089] [2021-11-25 20:04:47,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390447089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:47,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:47,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:04:47,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809464961] [2021-11-25 20:04:47,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:47,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:47,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:04:47,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:47,328 INFO L87 Difference]: Start difference. First operand 1631 states and 1724 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:50,829 INFO L93 Difference]: Finished difference Result 1668 states and 1774 transitions. [2021-11-25 20:04:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:50,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 20:04:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:50,842 INFO L225 Difference]: With dead ends: 1668 [2021-11-25 20:04:50,842 INFO L226 Difference]: Without dead ends: 1668 [2021-11-25 20:04:50,842 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 [2021-11-25 20:04:50,844 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 1159 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:50,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 1291 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 20:04:50,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-11-25 20:04:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1614. [2021-11-25 20:04:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 854 states have (on average 2.030444964871194) internal successors, (1734), 1605 states have internal predecessors, (1734), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:04:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 1766 transitions. [2021-11-25 20:04:50,896 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 1766 transitions. Word has length 5 [2021-11-25 20:04:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:50,896 INFO L470 AbstractCegarLoop]: Abstraction has 1614 states and 1766 transitions. [2021-11-25 20:04:50,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 1766 transitions. [2021-11-25 20:04:50,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:04:50,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:50,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:04:50,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:04:51,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:04:51,109 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:04:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-25 20:04:51,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:04:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298312199] [2021-11-25 20:04:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:51,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:04:51,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:04:51,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:04:51,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 20:04:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:51,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:04:51,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:51,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 20:04:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:04:51,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:51,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:04:51,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298312199] [2021-11-25 20:04:51,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298312199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:51,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:51,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:04:51,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433966334] [2021-11-25 20:04:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:51,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:51,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:04:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:51,342 INFO L87 Difference]: Start difference. First operand 1614 states and 1766 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:55,177 INFO L93 Difference]: Finished difference Result 1917 states and 2089 transitions. [2021-11-25 20:04:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:55,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 20:04:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:55,191 INFO L225 Difference]: With dead ends: 1917 [2021-11-25 20:04:55,191 INFO L226 Difference]: Without dead ends: 1917 [2021-11-25 20:04:55,191 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 [2021-11-25 20:04:55,196 INFO L933 BasicCegarLoop]: 1392 mSDtfsCounter, 504 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:55,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 2076 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 20:04:55,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-11-25 20:04:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1770. [2021-11-25 20:04:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1020 states have (on average 2.0) internal successors, (2040), 1761 states have internal predecessors, (2040), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:04:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2072 transitions. [2021-11-25 20:04:55,261 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2072 transitions. Word has length 5 [2021-11-25 20:04:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:55,261 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 2072 transitions. [2021-11-25 20:04:55,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2072 transitions. [2021-11-25 20:04:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 20:04:55,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:55,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 20:04:55,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:04:55,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:04:55,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:04:55,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-25 20:04:55,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:04:55,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496561085] [2021-11-25 20:04:55,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:55,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:04:55,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:04:55,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:04:55,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 20:04:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:55,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:04:55,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:04:55,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:55,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:04:55,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496561085] [2021-11-25 20:04:55,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496561085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:55,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:55,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:55,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884508504] [2021-11-25 20:04:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:55,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:55,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:04:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:55,642 INFO L87 Difference]: Start difference. First operand 1770 states and 2072 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:55,786 INFO L93 Difference]: Finished difference Result 3114 states and 3679 transitions. [2021-11-25 20:04:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:55,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 20:04:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:55,811 INFO L225 Difference]: With dead ends: 3114 [2021-11-25 20:04:55,811 INFO L226 Difference]: Without dead ends: 3114 [2021-11-25 20:04:55,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:55,815 INFO L933 BasicCegarLoop]: 1900 mSDtfsCounter, 1143 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:55,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 3516 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:04:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-11-25 20:04:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 1771. [2021-11-25 20:04:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1021 states have (on average 1.999020568070519) internal successors, (2041), 1762 states have internal predecessors, (2041), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:04:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2073 transitions. [2021-11-25 20:04:55,905 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2073 transitions. Word has length 6 [2021-11-25 20:04:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:55,908 INFO L470 AbstractCegarLoop]: Abstraction has 1771 states and 2073 transitions. [2021-11-25 20:04:55,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2073 transitions. [2021-11-25 20:04:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:04:55,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:55,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:55,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:04:56,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:04:56,130 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:04:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-25 20:04:56,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:04:56,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94422473] [2021-11-25 20:04:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:56,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:04:56,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:04:56,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:04:56,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 20:04:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:56,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:04:56,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:04:56,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:56,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:04:56,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94422473] [2021-11-25 20:04:56,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94422473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:56,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:56,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:56,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653097357] [2021-11-25 20:04:56,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:56,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:56,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:04:56,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:56,364 INFO L87 Difference]: Start difference. First operand 1771 states and 2073 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:56,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:56,422 INFO L93 Difference]: Finished difference Result 1735 states and 2036 transitions. [2021-11-25 20:04:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:56,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 20:04:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:56,434 INFO L225 Difference]: With dead ends: 1735 [2021-11-25 20:04:56,434 INFO L226 Difference]: Without dead ends: 1735 [2021-11-25 20:04:56,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:56,436 INFO L933 BasicCegarLoop]: 1573 mSDtfsCounter, 1533 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:56,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1606 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:04:56,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-11-25 20:04:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1729. [2021-11-25 20:04:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1003 states have (on average 1.992023928215354) internal successors, (1998), 1720 states have internal predecessors, (1998), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:04:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2030 transitions. [2021-11-25 20:04:56,488 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2030 transitions. Word has length 11 [2021-11-25 20:04:56,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:56,489 INFO L470 AbstractCegarLoop]: Abstraction has 1729 states and 2030 transitions. [2021-11-25 20:04:56,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:56,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2030 transitions. [2021-11-25 20:04:56,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:04:56,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:56,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:56,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:04:56,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:04:56,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:04:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-25 20:04:56,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:04:56,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604356600] [2021-11-25 20:04:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:56,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:04:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:04:56,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:04:56,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 20:04:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:56,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:04:56,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:04:56,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:56,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:04:56,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604356600] [2021-11-25 20:04:56,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604356600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:56,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:56,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:04:56,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140149114] [2021-11-25 20:04:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:56,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:04:56,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:04:56,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:04:56,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:04:56,900 INFO L87 Difference]: Start difference. First operand 1729 states and 2030 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:57,000 INFO L93 Difference]: Finished difference Result 1714 states and 2008 transitions. [2021-11-25 20:04:57,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:04:57,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 20:04:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:57,010 INFO L225 Difference]: With dead ends: 1714 [2021-11-25 20:04:57,010 INFO L226 Difference]: Without dead ends: 1714 [2021-11-25 20:04:57,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:57,012 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 1504 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:57,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 3082 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:04:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-11-25 20:04:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1707. [2021-11-25 20:04:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 995 states have (on average 1.9788944723618092) internal successors, (1969), 1698 states have internal predecessors, (1969), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:04:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2001 transitions. [2021-11-25 20:04:57,052 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2001 transitions. Word has length 13 [2021-11-25 20:04:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:57,052 INFO L470 AbstractCegarLoop]: Abstraction has 1707 states and 2001 transitions. [2021-11-25 20:04:57,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:04:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2001 transitions. [2021-11-25 20:04:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 20:04:57,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:57,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:57,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:04:57,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:04:57,271 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:04:57,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-25 20:04:57,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:04:57,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868672466] [2021-11-25 20:04:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:57,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:04:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:04:57,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:04:57,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 20:04:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:57,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:04:57,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:57,513 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 [2021-11-25 20:04:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:04:57,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:57,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:04:57,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868672466] [2021-11-25 20:04:57,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868672466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:57,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:57,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:57,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097260163] [2021-11-25 20:04:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:57,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:04:57,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:04:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:04:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:04:57,623 INFO L87 Difference]: Start difference. First operand 1707 states and 2001 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:02,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:02,940 INFO L93 Difference]: Finished difference Result 2520 states and 2820 transitions. [2021-11-25 20:05:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:05:02,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 20:05:02,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:02,953 INFO L225 Difference]: With dead ends: 2520 [2021-11-25 20:05:02,953 INFO L226 Difference]: Without dead ends: 2520 [2021-11-25 20:05:02,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:02,954 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 2761 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:02,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2774 Valid, 1876 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-25 20:05:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2021-11-25 20:05:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 1703. [2021-11-25 20:05:02,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 995 states have (on average 1.9748743718592965) internal successors, (1965), 1694 states have internal predecessors, (1965), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:05:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 1997 transitions. [2021-11-25 20:05:02,998 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 1997 transitions. Word has length 27 [2021-11-25 20:05:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:02,999 INFO L470 AbstractCegarLoop]: Abstraction has 1703 states and 1997 transitions. [2021-11-25 20:05:02,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:02,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 1997 transitions. [2021-11-25 20:05:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 20:05:03,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:03,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:03,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:03,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:05:03,212 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:03,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:03,217 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-25 20:05:03,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:03,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207314486] [2021-11-25 20:05:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:03,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:03,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:03,218 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:03,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 20:05:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:03,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:05:03,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:03,404 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 [2021-11-25 20:05:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:03,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:03,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:03,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207314486] [2021-11-25 20:05:03,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207314486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:03,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:03,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:05:03,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666380686] [2021-11-25 20:05:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:03,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:05:03,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:05:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:05:03,683 INFO L87 Difference]: Start difference. First operand 1703 states and 1997 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:09,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:09,509 INFO L93 Difference]: Finished difference Result 2264 states and 2467 transitions. [2021-11-25 20:05:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:05:09,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-25 20:05:09,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:09,520 INFO L225 Difference]: With dead ends: 2264 [2021-11-25 20:05:09,520 INFO L226 Difference]: Without dead ends: 2264 [2021-11-25 20:05:09,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:09,521 INFO L933 BasicCegarLoop]: 1164 mSDtfsCounter, 1247 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:09,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 2536 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 20:05:09,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-11-25 20:05:09,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1699. [2021-11-25 20:05:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 995 states have (on average 1.9708542713567838) internal successors, (1961), 1690 states have internal predecessors, (1961), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:05:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 1993 transitions. [2021-11-25 20:05:09,567 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 1993 transitions. Word has length 27 [2021-11-25 20:05:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:09,568 INFO L470 AbstractCegarLoop]: Abstraction has 1699 states and 1993 transitions. [2021-11-25 20:05:09,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 1993 transitions. [2021-11-25 20:05:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 20:05:09,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:09,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:09,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:09,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:05:09,784 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-25 20:05:09,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:09,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587835412] [2021-11-25 20:05:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:09,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:09,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:09,786 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:09,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 20:05:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:10,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:05:10,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:10,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:10,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:10,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587835412] [2021-11-25 20:05:10,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587835412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:10,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:10,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:05:10,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33877204] [2021-11-25 20:05:10,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:10,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:05:10,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:10,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:05:10,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:05:10,128 INFO L87 Difference]: Start difference. First operand 1699 states and 1993 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:10,200 INFO L93 Difference]: Finished difference Result 1699 states and 1989 transitions. [2021-11-25 20:05:10,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:05:10,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-25 20:05:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:10,209 INFO L225 Difference]: With dead ends: 1699 [2021-11-25 20:05:10,209 INFO L226 Difference]: Without dead ends: 1699 [2021-11-25 20:05:10,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:10,211 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 1480 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:10,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 3060 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:05:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2021-11-25 20:05:10,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1693. [2021-11-25 20:05:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 989 states have (on average 1.9726996966632964) internal successors, (1951), 1684 states have internal predecessors, (1951), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:05:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 1983 transitions. [2021-11-25 20:05:10,266 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 1983 transitions. Word has length 42 [2021-11-25 20:05:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:10,268 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 1983 transitions. [2021-11-25 20:05:10,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 1983 transitions. [2021-11-25 20:05:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 20:05:10,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:10,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:10,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:10,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:05:10,487 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:10,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-25 20:05:10,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:10,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51728906] [2021-11-25 20:05:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:10,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:10,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:10,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:10,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 20:05:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:10,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:05:10,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:11,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:11,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:11,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51728906] [2021-11-25 20:05:11,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51728906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:11,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:11,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:05:11,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821464368] [2021-11-25 20:05:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:11,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:05:11,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:05:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:05:11,029 INFO L87 Difference]: Start difference. First operand 1693 states and 1983 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:11,263 INFO L93 Difference]: Finished difference Result 2112 states and 2419 transitions. [2021-11-25 20:05:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:05:11,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-25 20:05:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:11,273 INFO L225 Difference]: With dead ends: 2112 [2021-11-25 20:05:11,273 INFO L226 Difference]: Without dead ends: 2112 [2021-11-25 20:05:11,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:05:11,274 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 455 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:11,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 2996 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:05:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-11-25 20:05:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1739. [2021-11-25 20:05:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1035 states have (on average 1.9294685990338165) internal successors, (1997), 1730 states have internal predecessors, (1997), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:05:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2029 transitions. [2021-11-25 20:05:11,322 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2029 transitions. Word has length 50 [2021-11-25 20:05:11,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:11,323 INFO L470 AbstractCegarLoop]: Abstraction has 1739 states and 2029 transitions. [2021-11-25 20:05:11,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2029 transitions. [2021-11-25 20:05:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 20:05:11,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:11,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:11,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:11,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:05:11,539 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-25 20:05:11,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:11,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158008967] [2021-11-25 20:05:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:11,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:11,542 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:11,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 20:05:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:11,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:05:11,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:12,007 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 [2021-11-25 20:05:12,017 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 [2021-11-25 20:05:12,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:05:12,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 20:05:12,621 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 20:05:12,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 20:05:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:12,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:12,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:12,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158008967] [2021-11-25 20:05:12,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158008967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:12,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:12,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:05:12,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756800193] [2021-11-25 20:05:12,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:12,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:05:12,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:05:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:05:12,649 INFO L87 Difference]: Start difference. First operand 1739 states and 2029 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:16,293 INFO L93 Difference]: Finished difference Result 1708 states and 1952 transitions. [2021-11-25 20:05:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:05:16,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-25 20:05:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:16,300 INFO L225 Difference]: With dead ends: 1708 [2021-11-25 20:05:16,300 INFO L226 Difference]: Without dead ends: 1708 [2021-11-25 20:05:16,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:05:16,301 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 1095 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:16,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 1218 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 20:05:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-11-25 20:05:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1489. [2021-11-25 20:05:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 869 states have (on average 1.8365937859608745) internal successors, (1596), 1480 states have internal predecessors, (1596), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:05:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1628 transitions. [2021-11-25 20:05:16,335 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1628 transitions. Word has length 53 [2021-11-25 20:05:16,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:16,335 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 1628 transitions. [2021-11-25 20:05:16,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1628 transitions. [2021-11-25 20:05:16,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 20:05:16,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:16,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:16,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-25 20:05:16,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:05:16,570 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:16,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:16,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-25 20:05:16,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:16,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42799110] [2021-11-25 20:05:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:16,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:16,574 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:16,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 20:05:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:16,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:05:16,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:16,966 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 [2021-11-25 20:05:16,986 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 [2021-11-25 20:05:17,020 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 27 treesize of output 15 [2021-11-25 20:05:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:17,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:17,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:17,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42799110] [2021-11-25 20:05:17,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42799110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:17,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:17,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:05:17,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343986600] [2021-11-25 20:05:17,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:17,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:17,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:17,037 INFO L87 Difference]: Start difference. First operand 1489 states and 1628 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:20,251 INFO L93 Difference]: Finished difference Result 1488 states and 1627 transitions. [2021-11-25 20:05:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:05:20,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-25 20:05:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:20,258 INFO L225 Difference]: With dead ends: 1488 [2021-11-25 20:05:20,258 INFO L226 Difference]: Without dead ends: 1488 [2021-11-25 20:05:20,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:05:20,259 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 4 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:20,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3630 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 20:05:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-11-25 20:05:20,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1488. [2021-11-25 20:05:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 869 states have (on average 1.8354430379746836) internal successors, (1595), 1479 states have internal predecessors, (1595), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:05:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1627 transitions. [2021-11-25 20:05:20,288 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1627 transitions. Word has length 58 [2021-11-25 20:05:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:20,289 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 1627 transitions. [2021-11-25 20:05:20,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1627 transitions. [2021-11-25 20:05:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 20:05:20,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:20,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:20,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-25 20:05:20,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:05:20,503 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:20,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:20,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-25 20:05:20,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:20,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61716649] [2021-11-25 20:05:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:20,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:20,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:20,506 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:20,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 20:05:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:20,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:05:20,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:20,877 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 [2021-11-25 20:05:20,907 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 [2021-11-25 20:05:20,917 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 [2021-11-25 20:05:20,968 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 21 treesize of output 9 [2021-11-25 20:05:20,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 20:05:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:21,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:21,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:21,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61716649] [2021-11-25 20:05:21,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61716649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:21,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:21,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:05:21,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884117118] [2021-11-25 20:05:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:21,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:21,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:21,005 INFO L87 Difference]: Start difference. First operand 1488 states and 1627 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:25,282 INFO L93 Difference]: Finished difference Result 1487 states and 1626 transitions. [2021-11-25 20:05:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:05:25,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-25 20:05:25,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:25,289 INFO L225 Difference]: With dead ends: 1487 [2021-11-25 20:05:25,289 INFO L226 Difference]: Without dead ends: 1487 [2021-11-25 20:05:25,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:05:25,290 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 2 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3681 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:25,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3681 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-25 20:05:25,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-11-25 20:05:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1487. [2021-11-25 20:05:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 868 states have (on average 1.836405529953917) internal successors, (1594), 1478 states have internal predecessors, (1594), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 20:05:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1626 transitions. [2021-11-25 20:05:25,317 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1626 transitions. Word has length 58 [2021-11-25 20:05:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:25,318 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 1626 transitions. [2021-11-25 20:05:25,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1626 transitions. [2021-11-25 20:05:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 20:05:25,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:25,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:25,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:25,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:05:25,542 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:25,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:25,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1222950270, now seen corresponding path program 1 times [2021-11-25 20:05:25,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:25,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565647890] [2021-11-25 20:05:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:25,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:25,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:25,545 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:25,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 20:05:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:25,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:05:25,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:25,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:25,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:25,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565647890] [2021-11-25 20:05:25,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565647890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:25,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:25,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:05:25,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382587485] [2021-11-25 20:05:25,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:25,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:05:25,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:25,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:05:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:05:25,919 INFO L87 Difference]: Start difference. First operand 1487 states and 1626 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:05:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:25,967 INFO L93 Difference]: Finished difference Result 1490 states and 1631 transitions. [2021-11-25 20:05:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:05:25,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-25 20:05:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:25,977 INFO L225 Difference]: With dead ends: 1490 [2021-11-25 20:05:25,977 INFO L226 Difference]: Without dead ends: 1490 [2021-11-25 20:05:25,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:25,978 INFO L933 BasicCegarLoop]: 1441 mSDtfsCounter, 2 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4315 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:25,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4315 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:05:25,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-11-25 20:05:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1490. [2021-11-25 20:05:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 870 states have (on average 1.835632183908046) internal successors, (1597), 1481 states have internal predecessors, (1597), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-25 20:05:26,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1631 transitions. [2021-11-25 20:05:26,007 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1631 transitions. Word has length 66 [2021-11-25 20:05:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:26,008 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 1631 transitions. [2021-11-25 20:05:26,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 20:05:26,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1631 transitions. [2021-11-25 20:05:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 20:05:26,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:26,009 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] [2021-11-25 20:05:26,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:26,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:05:26,223 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:26,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash -428715873, now seen corresponding path program 1 times [2021-11-25 20:05:26,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:26,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379363374] [2021-11-25 20:05:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:26,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:26,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:26,225 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:26,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 20:05:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:26,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:05:26,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:26,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:26,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:26,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379363374] [2021-11-25 20:05:26,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379363374] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:26,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537061183] [2021-11-25 20:05:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:26,822 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:05:26,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:05:26,828 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:05:26,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-25 20:05:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:27,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:05:27,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:27,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:27,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537061183] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:27,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149548503] [2021-11-25 20:05:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:27,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:27,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:27,458 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:27,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 20:05:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:27,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:05:27,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:27,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:27,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149548503] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:27,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:05:27,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-25 20:05:27,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444282070] [2021-11-25 20:05:27,934 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:05:27,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:05:27,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:05:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:05:27,935 INFO L87 Difference]: Start difference. First operand 1490 states and 1631 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-11-25 20:05:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:28,158 INFO L93 Difference]: Finished difference Result 1502 states and 1649 transitions. [2021-11-25 20:05:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:05:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 67 [2021-11-25 20:05:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:28,164 INFO L225 Difference]: With dead ends: 1502 [2021-11-25 20:05:28,165 INFO L226 Difference]: Without dead ends: 1502 [2021-11-25 20:05:28,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:05:28,168 INFO L933 BasicCegarLoop]: 1441 mSDtfsCounter, 15 mSDsluCounter, 5737 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7178 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:28,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 7178 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:05:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-11-25 20:05:28,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1500. [2021-11-25 20:05:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 879 states have (on average 1.8339021615472126) internal successors, (1612), 1490 states have internal predecessors, (1612), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-25 20:05:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1646 transitions. [2021-11-25 20:05:28,205 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1646 transitions. Word has length 67 [2021-11-25 20:05:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:28,205 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 1646 transitions. [2021-11-25 20:05:28,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2021-11-25 20:05:28,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1646 transitions. [2021-11-25 20:05:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 20:05:28,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:28,207 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:28,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:28,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-25 20:05:28,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-25 20:05:28,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:05:28,819 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash 155254206, now seen corresponding path program 2 times [2021-11-25 20:05:28,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:28,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317792301] [2021-11-25 20:05:28,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:05:28,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:28,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:28,821 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:28,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 20:05:29,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:05:29,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:05:29,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:05:29,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:29,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:29,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:29,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317792301] [2021-11-25 20:05:29,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317792301] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:29,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [758496920] [2021-11-25 20:05:29,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:05:29,620 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:05:29,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:05:29,622 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:05:29,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-25 20:05:30,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:05:30,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:05:30,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:05:30,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:30,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:30,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [758496920] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:30,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949833213] [2021-11-25 20:05:30,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:05:30,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:30,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:30,848 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:30,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 20:05:40,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:05:40,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:05:40,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:05:40,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:40,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:40,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949833213] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:40,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:05:40,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-25 20:05:40,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273952130] [2021-11-25 20:05:40,540 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:05:40,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 20:05:40,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:05:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 20:05:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:05:40,541 INFO L87 Difference]: Start difference. First operand 1500 states and 1646 transitions. Second operand has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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) [2021-11-25 20:05:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:41,480 INFO L93 Difference]: Finished difference Result 1521 states and 1676 transitions. [2021-11-25 20:05:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 20:05:41,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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 70 [2021-11-25 20:05:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:41,486 INFO L225 Difference]: With dead ends: 1521 [2021-11-25 20:05:41,486 INFO L226 Difference]: Without dead ends: 1515 [2021-11-25 20:05:41,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 20:05:41,488 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 81 mSDsluCounter, 11482 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 12924 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:41,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 12924 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:05:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2021-11-25 20:05:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1509. [2021-11-25 20:05:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 888 states have (on average 1.8277027027027026) internal successors, (1623), 1499 states have internal predecessors, (1623), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-25 20:05:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1657 transitions. [2021-11-25 20:05:41,516 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1657 transitions. Word has length 70 [2021-11-25 20:05:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:41,517 INFO L470 AbstractCegarLoop]: Abstraction has 1509 states and 1657 transitions. [2021-11-25 20:05:41,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.15) internal successors, (83), 20 states have internal predecessors, (83), 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) [2021-11-25 20:05:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1657 transitions. [2021-11-25 20:05:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 20:05:41,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:41,518 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:41,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:41,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:41,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:42,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:42,143 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 847 more)] === [2021-11-25 20:05:42,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:42,143 INFO L85 PathProgramCache]: Analyzing trace with hash -392207842, now seen corresponding path program 3 times [2021-11-25 20:05:42,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:42,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405740987] [2021-11-25 20:05:42,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:05:42,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:42,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:42,145 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:42,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 20:05:42,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 20:05:42,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:05:42,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 20:05:42,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:42,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:43,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:05:43,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405740987] [2021-11-25 20:05:43,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405740987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:43,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [80113950] [2021-11-25 20:05:43,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:05:43,714 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:05:43,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:05:43,721 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:05:43,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 20:05:46,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-25 20:05:46,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:05:46,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 20:05:46,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:46,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:46,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [80113950] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:46,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723942302] [2021-11-25 20:05:46,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:05:46,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:46,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:46,929 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:46,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f8627c8-0b1d-4709-96dd-11c795db942d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process