./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/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 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:45:12,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:45:12,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:45:12,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:45:12,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:45:12,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:45:12,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:45:12,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:45:12,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:45:12,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:45:12,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:45:12,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:45:12,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:45:12,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:45:12,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:45:12,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:45:12,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:45:12,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:45:12,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:45:12,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:45:12,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:45:12,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:45:12,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:45:12,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:45:12,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:45:12,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:45:12,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:45:12,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:45:12,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:45:12,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:45:12,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:45:12,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:45:12,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:45:12,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:45:12,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:45:12,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:45:12,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:45:12,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:45:12,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:45:12,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:45:12,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:45:12,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 17:45:12,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:45:12,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:45:12,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:45:12,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:45:12,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:45:12,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:45:12,536 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:45:12,536 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:45:12,536 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:45:12,536 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:45:12,537 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:45:12,537 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:45:12,537 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:45:12,537 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:45:12,537 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:45:12,538 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:45:12,538 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:45:12,538 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:45:12,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 17:45:12,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 17:45:12,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:45:12,540 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:45:12,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 17:45:12,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:45:12,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:45:12,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:45:12,541 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 17:45:12,541 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 17:45:12,541 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 17:45:12,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:45:12,542 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 17:45:12,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:45:12,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:45:12,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:45:12,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:45:12,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:45:12,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:45:12,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:45:12,544 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:45:12,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:45:12,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:45:12,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:45:12,545 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f [2021-11-25 17:45:12,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:45:12,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:45:12,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:45:12,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:45:12,857 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:45:12,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2021-11-25 17:45:12,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data/63b013a1f/876fa4598a354d4ba584aa9ad545e28e/FLAGd3bd8fc81 [2021-11-25 17:45:13,553 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:45:13,554 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2021-11-25 17:45:13,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data/63b013a1f/876fa4598a354d4ba584aa9ad545e28e/FLAGd3bd8fc81 [2021-11-25 17:45:13,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data/63b013a1f/876fa4598a354d4ba584aa9ad545e28e [2021-11-25 17:45:13,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:45:13,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:45:13,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:45:13,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:45:13,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:45:13,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:13" (1/1) ... [2021-11-25 17:45:13,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3520a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:13, skipping insertion in model container [2021-11-25 17:45:13,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:13" (1/1) ... [2021-11-25 17:45:13,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:45:13,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:45:14,416 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[33021,33034] [2021-11-25 17:45:14,593 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[44590,44603] [2021-11-25 17:45:14,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:45:14,650 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 17:45:14,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b365a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:14, skipping insertion in model container [2021-11-25 17:45:14,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:45:14,651 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-25 17:45:14,654 INFO L158 Benchmark]: Toolchain (without parser) took 891.46ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 70.9MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 17:45:14,655 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory was 86.1MB in the beginning and 86.0MB in the end (delta: 47.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:45:14,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 876.79ms. Allocated memory is still 109.1MB. Free memory was 66.6MB in the beginning and 70.9MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 17:45:14,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory was 86.1MB in the beginning and 86.0MB in the end (delta: 47.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 876.79ms. Allocated memory is still 109.1MB. Free memory was 66.6MB in the beginning and 70.9MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/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 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:45:16,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:45:16,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:45:16,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:45:17,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:45:17,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:45:17,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:45:17,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:45:17,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:45:17,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:45:17,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:45:17,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:45:17,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:45:17,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:45:17,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:45:17,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:45:17,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:45:17,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:45:17,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:45:17,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:45:17,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:45:17,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:45:17,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:45:17,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:45:17,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:45:17,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:45:17,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:45:17,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:45:17,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:45:17,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:45:17,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:45:17,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:45:17,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:45:17,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:45:17,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:45:17,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:45:17,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:45:17,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:45:17,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:45:17,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:45:17,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:45:17,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 17:45:17,087 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:45:17,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:45:17,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:45:17,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:45:17,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:45:17,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:45:17,092 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:45:17,092 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:45:17,092 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:45:17,092 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:45:17,093 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:45:17,094 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:45:17,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 17:45:17,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 17:45:17,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:45:17,096 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:45:17,096 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 17:45:17,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:45:17,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:45:17,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:45:17,097 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 17:45:17,097 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 17:45:17,097 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 17:45:17,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:45:17,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 17:45:17,098 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 17:45:17,098 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 17:45:17,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:45:17,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:45:17,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:45:17,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 17:45:17,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:45:17,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:45:17,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:45:17,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:45:17,100 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 17:45:17,100 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 17:45:17,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:45:17,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:45:17,113 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f [2021-11-25 17:45:17,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:45:17,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:45:17,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:45:17,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:45:17,550 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:45:17,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2021-11-25 17:45:17,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data/0a9819b9b/16aa2da5c2ea43beb6a4045dc387cac8/FLAG88a6c1b9a [2021-11-25 17:45:18,276 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:45:18,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2021-11-25 17:45:18,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data/0a9819b9b/16aa2da5c2ea43beb6a4045dc387cac8/FLAG88a6c1b9a [2021-11-25 17:45:18,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/data/0a9819b9b/16aa2da5c2ea43beb6a4045dc387cac8 [2021-11-25 17:45:18,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:45:18,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:45:18,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:45:18,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:45:18,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:45:18,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:18" (1/1) ... [2021-11-25 17:45:18,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cd00c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:18, skipping insertion in model container [2021-11-25 17:45:18,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:18" (1/1) ... [2021-11-25 17:45:18,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:45:18,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:45:19,025 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[33021,33034] [2021-11-25 17:45:19,202 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[44590,44603] [2021-11-25 17:45:19,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:45:19,260 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 17:45:19,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:45:19,295 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[33021,33034] [2021-11-25 17:45:19,357 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[44590,44603] [2021-11-25 17:45:19,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:45:19,372 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:45:19,420 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[33021,33034] [2021-11-25 17:45:19,484 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_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i[44590,44603] [2021-11-25 17:45:19,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:45:19,536 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:45:19,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19 WrapperNode [2021-11-25 17:45:19,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:45:19,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:45:19,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:45:19,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:45:19,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,679 INFO L137 Inliner]: procedures = 180, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1205 [2021-11-25 17:45:19,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:45:19,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:45:19,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:45:19,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:45:19,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:45:19,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:45:19,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:45:19,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:45:19,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (1/1) ... [2021-11-25 17:45:19,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:45:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:45:19,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:45:19,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:45:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 17:45:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 17:45:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 17:45:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 17:45:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 17:45:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 17:45:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:45:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:45:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:45:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:45:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 17:45:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:45:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:45:19,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 17:45:19,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 17:45:19,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:45:19,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:45:20,284 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:45:20,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:45:20,291 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-25 17:45:26,115 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:45:26,132 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:45:26,132 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-25 17:45:26,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:26 BoogieIcfgContainer [2021-11-25 17:45:26,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:45:26,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:45:26,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:45:26,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:45:26,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:45:18" (1/3) ... [2021-11-25 17:45:26,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d975c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:45:26, skipping insertion in model container [2021-11-25 17:45:26,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:19" (2/3) ... [2021-11-25 17:45:26,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d975c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:45:26, skipping insertion in model container [2021-11-25 17:45:26,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:45:26" (3/3) ... [2021-11-25 17:45:26,145 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-2.i [2021-11-25 17:45:26,151 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:45:26,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2021-11-25 17:45:26,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:45:26,212 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 17:45:26,212 INFO L340 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2021-11-25 17:45:26,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 1271 states, 624 states have (on average 2.2580128205128207) internal successors, (1409), 1265 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 17:45:26,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:26,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 17:45:26,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:26,272 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-25 17:45:26,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:26,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084259305] [2021-11-25 17:45:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:26,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:26,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:26,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:26,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 17:45:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:26,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:45:26,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:26,600 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 17:45:26,610 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 17:45:26,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:26,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:26,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084259305] [2021-11-25 17:45:26,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084259305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:26,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:26,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:45:26,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764151232] [2021-11-25 17:45:26,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:26,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:45:26,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:45:26,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:45:26,681 INFO L87 Difference]: Start difference. First operand has 1271 states, 624 states have (on average 2.2580128205128207) internal successors, (1409), 1265 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:29,462 INFO L93 Difference]: Finished difference Result 1443 states and 1528 transitions. [2021-11-25 17:45:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:45:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 17:45:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:29,496 INFO L225 Difference]: With dead ends: 1443 [2021-11-25 17:45:29,496 INFO L226 Difference]: Without dead ends: 1441 [2021-11-25 17:45:29,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:45:29,505 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1181 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:29,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 928 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 17:45:29,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-11-25 17:45:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1256. [2021-11-25 17:45:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 624 states have (on average 2.110576923076923) internal successors, (1317), 1250 states have internal predecessors, (1317), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1333 transitions. [2021-11-25 17:45:29,658 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1333 transitions. Word has length 3 [2021-11-25 17:45:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:29,658 INFO L470 AbstractCegarLoop]: Abstraction has 1256 states and 1333 transitions. [2021-11-25 17:45:29,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1333 transitions. [2021-11-25 17:45:29,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 17:45:29,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:29,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 17:45:29,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-25 17:45:29,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:29,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:29,875 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-25 17:45:29,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:29,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362935020] [2021-11-25 17:45:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:29,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:29,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:29,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:29,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 17:45:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:30,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 17:45:30,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:30,052 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 17:45:30,064 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 17:45:30,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:30,065 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362935020] [2021-11-25 17:45:30,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362935020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:30,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:30,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:45:30,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726790224] [2021-11-25 17:45:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:30,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:45:30,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:45:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:45:30,077 INFO L87 Difference]: Start difference. First operand 1256 states and 1333 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:34,242 INFO L93 Difference]: Finished difference Result 1865 states and 1993 transitions. [2021-11-25 17:45:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:45:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 17:45:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:34,253 INFO L225 Difference]: With dead ends: 1865 [2021-11-25 17:45:34,253 INFO L226 Difference]: Without dead ends: 1865 [2021-11-25 17:45:34,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:45:34,255 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 650 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:34,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 1750 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 17:45:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2021-11-25 17:45:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1456. [2021-11-25 17:45:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 825 states have (on average 2.0957575757575757) internal successors, (1729), 1450 states have internal predecessors, (1729), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1745 transitions. [2021-11-25 17:45:34,314 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1745 transitions. Word has length 3 [2021-11-25 17:45:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:34,314 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 1745 transitions. [2021-11-25 17:45:34,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1745 transitions. [2021-11-25 17:45:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 17:45:34,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:34,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:34,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:34,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:34,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:34,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:34,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2021-11-25 17:45:34,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:34,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682414821] [2021-11-25 17:45:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:34,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:34,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:34,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:34,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 17:45:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:34,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 17:45:34,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:34,725 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 17:45:34,733 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 17:45:34,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:45:34,814 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 17:45:34,827 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 17:45:34,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 17:45:34,856 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 17:45:34,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:34,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:34,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682414821] [2021-11-25 17:45:34,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682414821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:34,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:34,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:45:34,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900550866] [2021-11-25 17:45:34,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:34,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:45:34,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:34,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:45:34,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:45:34,859 INFO L87 Difference]: Start difference. First operand 1456 states and 1745 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:38,958 INFO L93 Difference]: Finished difference Result 1634 states and 1934 transitions. [2021-11-25 17:45:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:45:38,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 17:45:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:38,968 INFO L225 Difference]: With dead ends: 1634 [2021-11-25 17:45:38,969 INFO L226 Difference]: Without dead ends: 1634 [2021-11-25 17:45:38,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 17:45:38,970 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 2629 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:38,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2637 Valid, 535 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-25 17:45:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-11-25 17:45:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1245. [2021-11-25 17:45:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 624 states have (on average 2.0913461538461537) internal successors, (1305), 1239 states have internal predecessors, (1305), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1321 transitions. [2021-11-25 17:45:39,024 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1321 transitions. Word has length 7 [2021-11-25 17:45:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:39,024 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1321 transitions. [2021-11-25 17:45:39,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1321 transitions. [2021-11-25 17:45:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 17:45:39,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:39,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:39,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:39,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:39,237 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-25 17:45:39,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:39,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839675090] [2021-11-25 17:45:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:39,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:39,240 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:39,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 17:45:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:39,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:45:39,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:39,410 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 17:45:39,443 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 17:45:39,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:39,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:39,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839675090] [2021-11-25 17:45:39,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839675090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:39,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:39,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:45:39,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36749473] [2021-11-25 17:45:39,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:39,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:45:39,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:39,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:45:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:45:39,446 INFO L87 Difference]: Start difference. First operand 1245 states and 1321 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:41,960 INFO L93 Difference]: Finished difference Result 1572 states and 1677 transitions. [2021-11-25 17:45:41,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:45:41,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 17:45:41,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:41,971 INFO L225 Difference]: With dead ends: 1572 [2021-11-25 17:45:41,971 INFO L226 Difference]: Without dead ends: 1572 [2021-11-25 17:45:41,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 17:45:41,973 INFO L933 BasicCegarLoop]: 1163 mSDtfsCounter, 990 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:41,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 1509 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 17:45:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-11-25 17:45:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1196. [2021-11-25 17:45:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 624 states have (on average 2.0128205128205128) internal successors, (1256), 1190 states have internal predecessors, (1256), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1272 transitions. [2021-11-25 17:45:42,010 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1272 transitions. Word has length 8 [2021-11-25 17:45:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:42,011 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 1272 transitions. [2021-11-25 17:45:42,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1272 transitions. [2021-11-25 17:45:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 17:45:42,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:42,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:42,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-25 17:45:42,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:42,223 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:42,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:42,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-25 17:45:42,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:42,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283603009] [2021-11-25 17:45:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:42,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:42,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:42,225 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:42,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 17:45:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:42,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 17:45:42,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:42,377 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 17:45:42,405 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 17:45:42,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:42,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:42,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283603009] [2021-11-25 17:45:42,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283603009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:42,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:42,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:45:42,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358423940] [2021-11-25 17:45:42,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:42,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:45:42,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:45:42,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:45:42,408 INFO L87 Difference]: Start difference. First operand 1196 states and 1272 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:45,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:45,632 INFO L93 Difference]: Finished difference Result 1650 states and 1758 transitions. [2021-11-25 17:45:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:45:45,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 17:45:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:45,643 INFO L225 Difference]: With dead ends: 1650 [2021-11-25 17:45:45,643 INFO L226 Difference]: Without dead ends: 1650 [2021-11-25 17:45:45,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 17:45:45,645 INFO L933 BasicCegarLoop]: 1372 mSDtfsCounter, 673 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:45,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 1914 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 17:45:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-11-25 17:45:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1218. [2021-11-25 17:45:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 656 states have (on average 2.0) internal successors, (1312), 1212 states have internal predecessors, (1312), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1328 transitions. [2021-11-25 17:45:45,684 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1328 transitions. Word has length 8 [2021-11-25 17:45:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:45,685 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1328 transitions. [2021-11-25 17:45:45,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1328 transitions. [2021-11-25 17:45:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 17:45:45,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:45,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:45,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:45,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:45,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:45,910 INFO L85 PathProgramCache]: Analyzing trace with hash 871377621, now seen corresponding path program 1 times [2021-11-25 17:45:45,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:45,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101811372] [2021-11-25 17:45:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:45,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:45,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:45,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:45,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 17:45:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:46,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 17:45:46,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:46,183 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 17:45:46,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:46,183 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:46,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101811372] [2021-11-25 17:45:46,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101811372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:46,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:46,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:45:46,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941699064] [2021-11-25 17:45:46,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:46,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:45:46,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:45:46,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:45:46,188 INFO L87 Difference]: Start difference. First operand 1218 states and 1328 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:47,113 INFO L93 Difference]: Finished difference Result 1864 states and 2017 transitions. [2021-11-25 17:45:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:45:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 17:45:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:47,122 INFO L225 Difference]: With dead ends: 1864 [2021-11-25 17:45:47,122 INFO L226 Difference]: Without dead ends: 1864 [2021-11-25 17:45:47,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 17:45:47,123 INFO L933 BasicCegarLoop]: 1392 mSDtfsCounter, 753 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 3739 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:47,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 3739 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:45:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-11-25 17:45:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1462. [2021-11-25 17:45:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 900 states have (on average 1.9677777777777778) internal successors, (1771), 1456 states have internal predecessors, (1771), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1787 transitions. [2021-11-25 17:45:47,161 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1787 transitions. Word has length 11 [2021-11-25 17:45:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:47,161 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 1787 transitions. [2021-11-25 17:45:47,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1787 transitions. [2021-11-25 17:45:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 17:45:47,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:47,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:47,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:47,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:47,374 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-25 17:45:47,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:47,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852818710] [2021-11-25 17:45:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:47,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:47,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:47,376 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:47,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 17:45:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:47,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 17:45:47,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:47,569 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 17:45:47,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:47,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:47,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852818710] [2021-11-25 17:45:47,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852818710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:47,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:47,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:45:47,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669947343] [2021-11-25 17:45:47,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:47,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:45:47,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:47,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:45:47,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:45:47,573 INFO L87 Difference]: Start difference. First operand 1462 states and 1787 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 17:45:47,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:47,608 INFO L93 Difference]: Finished difference Result 1643 states and 1965 transitions. [2021-11-25 17:45:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:45:47,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 17:45:47,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:47,618 INFO L225 Difference]: With dead ends: 1643 [2021-11-25 17:45:47,618 INFO L226 Difference]: Without dead ends: 1643 [2021-11-25 17:45:47,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 17:45:47,620 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 602 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2072 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 17:45:47,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 2072 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:45:47,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-25 17:45:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1402. [2021-11-25 17:45:47,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 864 states have (on average 1.9502314814814814) internal successors, (1685), 1396 states have internal predecessors, (1685), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1701 transitions. [2021-11-25 17:45:47,674 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1701 transitions. Word has length 13 [2021-11-25 17:45:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:47,675 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 1701 transitions. [2021-11-25 17:45:47,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 17:45:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1701 transitions. [2021-11-25 17:45:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 17:45:47,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:47,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:47,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:47,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:47,894 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-11-25 17:45:47,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:47,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551628420] [2021-11-25 17:45:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:47,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:47,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:47,896 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:47,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 17:45:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:48,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:45:48,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:48,078 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 17:45:48,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:48,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:48,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551628420] [2021-11-25 17:45:48,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551628420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:48,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:48,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:45:48,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167610063] [2021-11-25 17:45:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:48,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:45:48,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:45:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:45:48,081 INFO L87 Difference]: Start difference. First operand 1402 states and 1701 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:48,152 INFO L93 Difference]: Finished difference Result 1615 states and 1909 transitions. [2021-11-25 17:45:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:45:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 17:45:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:48,161 INFO L225 Difference]: With dead ends: 1615 [2021-11-25 17:45:48,161 INFO L226 Difference]: Without dead ends: 1615 [2021-11-25 17:45:48,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 17:45:48,162 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 573 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:48,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 3196 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:45:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-25 17:45:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1372. [2021-11-25 17:45:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 848 states have (on average 1.9186320754716981) internal successors, (1627), 1366 states have internal predecessors, (1627), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:48,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1643 transitions. [2021-11-25 17:45:48,198 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1643 transitions. Word has length 15 [2021-11-25 17:45:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:48,199 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 1643 transitions. [2021-11-25 17:45:48,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1643 transitions. [2021-11-25 17:45:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 17:45:48,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:48,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:48,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:48,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:48,411 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr637ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:48,412 INFO L85 PathProgramCache]: Analyzing trace with hash 552252916, now seen corresponding path program 1 times [2021-11-25 17:45:48,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:48,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143305937] [2021-11-25 17:45:48,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:48,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:48,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:48,413 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:48,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 17:45:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:48,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 17:45:48,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:48,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 17:45:48,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 17:45:48,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 17:45:48,670 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-25 17:45:48,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-25 17:45:48,731 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-25 17:45:48,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-25 17:45:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:45:48,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:48,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:48,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143305937] [2021-11-25 17:45:48,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143305937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:48,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:48,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:45:48,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812195805] [2021-11-25 17:45:48,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:48,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:45:48,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:45:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:45:48,768 INFO L87 Difference]: Start difference. First operand 1372 states and 1643 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:50,148 INFO L93 Difference]: Finished difference Result 1826 states and 2167 transitions. [2021-11-25 17:45:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:45:50,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-25 17:45:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:50,156 INFO L225 Difference]: With dead ends: 1826 [2021-11-25 17:45:50,156 INFO L226 Difference]: Without dead ends: 1826 [2021-11-25 17:45:50,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:45:50,157 INFO L933 BasicCegarLoop]: 1143 mSDtfsCounter, 443 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:50,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 3307 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 17:45:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2021-11-25 17:45:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1371. [2021-11-25 17:45:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 847 states have (on average 1.9185360094451003) internal successors, (1625), 1365 states have internal predecessors, (1625), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1641 transitions. [2021-11-25 17:45:50,194 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1641 transitions. Word has length 16 [2021-11-25 17:45:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:50,194 INFO L470 AbstractCegarLoop]: Abstraction has 1371 states and 1641 transitions. [2021-11-25 17:45:50,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1641 transitions. [2021-11-25 17:45:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 17:45:50,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:50,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:50,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:50,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:50,407 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-25 17:45:50,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:50,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946338674] [2021-11-25 17:45:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:50,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:50,409 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:50,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 17:45:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:50,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 17:45:50,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:50,621 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 17:45:50,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:50,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:50,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946338674] [2021-11-25 17:45:50,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946338674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:50,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:50,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:45:50,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307421175] [2021-11-25 17:45:50,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:50,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:45:50,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:45:50,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:45:50,624 INFO L87 Difference]: Start difference. First operand 1371 states and 1641 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:50,658 INFO L93 Difference]: Finished difference Result 1311 states and 1555 transitions. [2021-11-25 17:45:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:45:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-25 17:45:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:50,666 INFO L225 Difference]: With dead ends: 1311 [2021-11-25 17:45:50,667 INFO L226 Difference]: Without dead ends: 1311 [2021-11-25 17:45:50,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 17:45:50,668 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 1106 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1169 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 17:45:50,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 1169 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:45:50,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-11-25 17:45:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1311. [2021-11-25 17:45:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 811 states have (on average 1.8976572133168927) internal successors, (1539), 1305 states have internal predecessors, (1539), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1555 transitions. [2021-11-25 17:45:50,699 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1555 transitions. Word has length 18 [2021-11-25 17:45:50,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:50,699 INFO L470 AbstractCegarLoop]: Abstraction has 1311 states and 1555 transitions. [2021-11-25 17:45:50,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1555 transitions. [2021-11-25 17:45:50,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 17:45:50,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:50,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:50,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:50,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:50,914 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-25 17:45:50,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:50,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394468680] [2021-11-25 17:45:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:50,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:50,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:50,916 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:50,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 17:45:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:51,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:45:51,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:51,192 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 17:45:51,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:51,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:51,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394468680] [2021-11-25 17:45:51,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394468680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:51,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:51,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:45:51,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055743879] [2021-11-25 17:45:51,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:51,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:45:51,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:51,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:45:51,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:45:51,195 INFO L87 Difference]: Start difference. First operand 1311 states and 1555 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:51,284 INFO L93 Difference]: Finished difference Result 1283 states and 1499 transitions. [2021-11-25 17:45:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:45:51,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-25 17:45:51,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:51,291 INFO L225 Difference]: With dead ends: 1283 [2021-11-25 17:45:51,292 INFO L226 Difference]: Without dead ends: 1283 [2021-11-25 17:45:51,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 17:45:51,293 INFO L933 BasicCegarLoop]: 1092 mSDtfsCounter, 1077 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2209 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 17:45:51,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 2209 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:45:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-11-25 17:45:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1281. [2021-11-25 17:45:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 795 states have (on average 1.8628930817610063) internal successors, (1481), 1275 states have internal predecessors, (1481), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1497 transitions. [2021-11-25 17:45:51,321 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1497 transitions. Word has length 20 [2021-11-25 17:45:51,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:51,322 INFO L470 AbstractCegarLoop]: Abstraction has 1281 states and 1497 transitions. [2021-11-25 17:45:51,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1497 transitions. [2021-11-25 17:45:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 17:45:51,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:51,325 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] [2021-11-25 17:45:51,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:51,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:51,536 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:51,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-25 17:45:51,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:51,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32599082] [2021-11-25 17:45:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:51,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:51,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:51,538 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:51,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 17:45:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:51,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 17:45:51,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:51,726 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 17:45:51,844 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 17:45:51,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:51,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:51,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32599082] [2021-11-25 17:45:51,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32599082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:51,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:51,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:45:51,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812556695] [2021-11-25 17:45:51,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:51,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:45:51,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:45:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:45:51,847 INFO L87 Difference]: Start difference. First operand 1281 states and 1497 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:54,687 INFO L93 Difference]: Finished difference Result 1880 states and 2230 transitions. [2021-11-25 17:45:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:45:54,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-25 17:45:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:54,698 INFO L225 Difference]: With dead ends: 1880 [2021-11-25 17:45:54,699 INFO L226 Difference]: Without dead ends: 1880 [2021-11-25 17:45:54,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 17:45:54,700 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1768 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:54,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 1271 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 17:45:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-11-25 17:45:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1277. [2021-11-25 17:45:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 795 states have (on average 1.8528301886792453) internal successors, (1473), 1271 states have internal predecessors, (1473), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1489 transitions. [2021-11-25 17:45:54,752 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1489 transitions. Word has length 34 [2021-11-25 17:45:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:54,753 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 1489 transitions. [2021-11-25 17:45:54,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1489 transitions. [2021-11-25 17:45:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 17:45:54,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:54,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:54,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:54,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:54,959 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-25 17:45:54,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:54,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902292541] [2021-11-25 17:45:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:54,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:54,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:54,961 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:55,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 17:45:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:55,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 17:45:55,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:55,191 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 17:45:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:45:55,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:55,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:55,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902292541] [2021-11-25 17:45:55,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902292541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:55,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:55,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:45:55,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477638679] [2021-11-25 17:45:55,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:55,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:45:55,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:45:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:45:55,427 INFO L87 Difference]: Start difference. First operand 1277 states and 1489 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:59,106 INFO L93 Difference]: Finished difference Result 2008 states and 2337 transitions. [2021-11-25 17:45:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:45:59,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-25 17:45:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:59,114 INFO L225 Difference]: With dead ends: 2008 [2021-11-25 17:45:59,114 INFO L226 Difference]: Without dead ends: 2008 [2021-11-25 17:45:59,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 17:45:59,115 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 1230 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:59,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 2582 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 17:45:59,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-11-25 17:45:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1273. [2021-11-25 17:45:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 795 states have (on average 1.8427672955974843) internal successors, (1465), 1267 states have internal predecessors, (1465), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1481 transitions. [2021-11-25 17:45:59,145 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1481 transitions. Word has length 34 [2021-11-25 17:45:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:59,146 INFO L470 AbstractCegarLoop]: Abstraction has 1273 states and 1481 transitions. [2021-11-25 17:45:59,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1481 transitions. [2021-11-25 17:45:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-25 17:45:59,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:59,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:59,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:59,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:45:59,360 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:45:59,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-25 17:45:59,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:45:59,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745949857] [2021-11-25 17:45:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:59,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:45:59,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:45:59,363 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:45:59,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 17:45:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:59,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:45:59,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:59,774 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 17:45:59,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:45:59,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:45:59,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745949857] [2021-11-25 17:45:59,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745949857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:45:59,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:45:59,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:45:59,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676402801] [2021-11-25 17:45:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:45:59,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:45:59,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:45:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:45:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:45:59,777 INFO L87 Difference]: Start difference. First operand 1273 states and 1481 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:59,846 INFO L93 Difference]: Finished difference Result 1261 states and 1461 transitions. [2021-11-25 17:45:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:45:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-25 17:45:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:59,855 INFO L225 Difference]: With dead ends: 1261 [2021-11-25 17:45:59,856 INFO L226 Difference]: Without dead ends: 1261 [2021-11-25 17:45:59,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 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 17:45:59,857 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 1053 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 2187 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 17:45:59,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 2187 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:45:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-11-25 17:45:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2021-11-25 17:45:59,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 783 states have (on average 1.8454661558109835) internal successors, (1445), 1255 states have internal predecessors, (1445), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:45:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1461 transitions. [2021-11-25 17:45:59,885 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1461 transitions. Word has length 52 [2021-11-25 17:45:59,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:59,885 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 1461 transitions. [2021-11-25 17:45:59,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:45:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1461 transitions. [2021-11-25 17:45:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 17:45:59,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:59,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:45:59,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:00,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:46:00,102 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:46:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:46:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-25 17:46:00,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:46:00,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624144942] [2021-11-25 17:46:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:00,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:46:00,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:46:00,104 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:46:00,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 17:46:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:00,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 17:46:00,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:00,520 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 17:46:00,526 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 17:46:01,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:46:01,169 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 17:46:01,185 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 17:46:01,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-25 17:46:01,209 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 17:46:01,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:46:01,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:46:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624144942] [2021-11-25 17:46:01,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624144942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:46:01,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:46:01,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:46:01,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408792447] [2021-11-25 17:46:01,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:46:01,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:46:01,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:46:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:46:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:46:01,211 INFO L87 Difference]: Start difference. First operand 1261 states and 1461 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 17:46:04,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:46:04,066 INFO L93 Difference]: Finished difference Result 1609 states and 1926 transitions. [2021-11-25 17:46:04,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:46:04,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-25 17:46:04,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:46:04,076 INFO L225 Difference]: With dead ends: 1609 [2021-11-25 17:46:04,076 INFO L226 Difference]: Without dead ends: 1609 [2021-11-25 17:46:04,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 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 17:46:04,077 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1106 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:46:04,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 876 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 17:46:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-11-25 17:46:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1191. [2021-11-25 17:46:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 751 states have (on average 1.785619174434088) internal successors, (1341), 1185 states have internal predecessors, (1341), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:46:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1357 transitions. [2021-11-25 17:46:04,104 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1357 transitions. Word has length 60 [2021-11-25 17:46:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:46:04,104 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1357 transitions. [2021-11-25 17:46:04,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 17:46:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1357 transitions. [2021-11-25 17:46:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:46:04,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:46:04,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:46:04,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:04,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:46:04,319 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:46:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:46:04,319 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-25 17:46:04,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:46:04,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235750003] [2021-11-25 17:46:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:04,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:46:04,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:46:04,321 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:46:04,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-25 17:46:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:04,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 17:46:04,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:04,743 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 17:46:04,758 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 17:46:04,795 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 17:46:04,808 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 17:46:04,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:46:04,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:46:04,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235750003] [2021-11-25 17:46:04,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235750003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:46:04,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:46:04,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:46:04,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083903647] [2021-11-25 17:46:04,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:46:04,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:46:04,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:46:04,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:46:04,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:46:04,811 INFO L87 Difference]: Start difference. First operand 1191 states and 1357 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:46:07,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:46:07,531 INFO L93 Difference]: Finished difference Result 1190 states and 1356 transitions. [2021-11-25 17:46:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:46:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:46:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:46:07,537 INFO L225 Difference]: With dead ends: 1190 [2021-11-25 17:46:07,538 INFO L226 Difference]: Without dead ends: 1190 [2021-11-25 17:46:07,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 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 17:46:07,539 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 4 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:46:07,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2684 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 17:46:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2021-11-25 17:46:07,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1190. [2021-11-25 17:46:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 751 states have (on average 1.7842876165113182) internal successors, (1340), 1184 states have internal predecessors, (1340), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:46:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1356 transitions. [2021-11-25 17:46:07,561 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1356 transitions. Word has length 65 [2021-11-25 17:46:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:46:07,561 INFO L470 AbstractCegarLoop]: Abstraction has 1190 states and 1356 transitions. [2021-11-25 17:46:07,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:46:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1356 transitions. [2021-11-25 17:46:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:46:07,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:46:07,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:46:07,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:07,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:46:07,776 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:46:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:46:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-25 17:46:07,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:46:07,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447756885] [2021-11-25 17:46:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:07,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:46:07,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:46:07,778 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:46:07,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 17:46:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:08,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 17:46:08,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:08,152 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 17:46:08,177 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 17:46:08,186 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 17:46:08,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-11-25 17:46:08,253 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 17:46:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:08,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:46:08,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:46:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447756885] [2021-11-25 17:46:08,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447756885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:46:08,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:46:08,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:46:08,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413111603] [2021-11-25 17:46:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:46:08,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:46:08,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:46:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:46:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:46:08,276 INFO L87 Difference]: Start difference. First operand 1190 states and 1356 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:46:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:46:11,852 INFO L93 Difference]: Finished difference Result 1189 states and 1355 transitions. [2021-11-25 17:46:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:46:11,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:46:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:46:11,858 INFO L225 Difference]: With dead ends: 1189 [2021-11-25 17:46:11,858 INFO L226 Difference]: Without dead ends: 1189 [2021-11-25 17:46:11,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 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 17:46:11,859 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 2 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:46:11,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2737 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-25 17:46:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-11-25 17:46:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2021-11-25 17:46:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 750 states have (on average 1.7853333333333334) internal successors, (1339), 1183 states have internal predecessors, (1339), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 17:46:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1355 transitions. [2021-11-25 17:46:11,892 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1355 transitions. Word has length 65 [2021-11-25 17:46:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:46:11,893 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1355 transitions. [2021-11-25 17:46:11,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:46:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1355 transitions. [2021-11-25 17:46:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 17:46:11,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:46:11,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:46:11,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:12,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:46:12,108 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:46:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:46:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash 231575279, now seen corresponding path program 1 times [2021-11-25 17:46:12,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:46:12,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877485351] [2021-11-25 17:46:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:12,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:46:12,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:46:12,110 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:46:12,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 17:46:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:12,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 17:46:12,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:12,509 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 17:46:12,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:46:12,510 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:46:12,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877485351] [2021-11-25 17:46:12,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877485351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:46:12,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:46:12,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:46:12,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886447312] [2021-11-25 17:46:12,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:46:12,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:46:12,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:46:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:46:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:46:12,513 INFO L87 Difference]: Start difference. First operand 1189 states and 1355 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 17:46:12,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:46:12,570 INFO L93 Difference]: Finished difference Result 1192 states and 1359 transitions. [2021-11-25 17:46:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:46:12,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 73 [2021-11-25 17:46:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:46:12,577 INFO L225 Difference]: With dead ends: 1192 [2021-11-25 17:46:12,578 INFO L226 Difference]: Without dead ends: 1192 [2021-11-25 17:46:12,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 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 17:46:12,579 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 2 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:46:12,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3133 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:46:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-11-25 17:46:12,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2021-11-25 17:46:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 752 states have (on average 1.7845744680851063) internal successors, (1342), 1186 states have internal predecessors, (1342), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-25 17:46:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1359 transitions. [2021-11-25 17:46:12,606 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1359 transitions. Word has length 73 [2021-11-25 17:46:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:46:12,606 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1359 transitions. [2021-11-25 17:46:12,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 17:46:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1359 transitions. [2021-11-25 17:46:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 17:46:12,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:46:12,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:46:12,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:12,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 17:46:12,822 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:46:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:46:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash -695791212, now seen corresponding path program 1 times [2021-11-25 17:46:12,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:46:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733449915] [2021-11-25 17:46:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:12,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:46:12,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:46:12,824 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:46:12,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-25 17:46:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:13,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 17:46:13,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:13,285 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 17:46:13,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:13,479 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 17:46:13,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:46:13,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733449915] [2021-11-25 17:46:13,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733449915] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:13,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2100562782] [2021-11-25 17:46:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:13,482 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 17:46:13,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 17:46:13,483 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 17:46:13,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-25 17:46:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:13,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 17:46:13,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:14,103 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 17:46:14,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:14,242 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 17:46:14,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2100562782] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:14,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439083178] [2021-11-25 17:46:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:14,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:46:14,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:46:14,245 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:46:14,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-25 17:46:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:14,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 17:46:14,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:14,634 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 17:46:14,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:14,755 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 17:46:14,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439083178] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:14,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 17:46:14,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-25 17:46:14,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640562609] [2021-11-25 17:46:14,756 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 17:46:14,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:46:14,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:46:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:46:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:46:14,758 INFO L87 Difference]: Start difference. First operand 1192 states and 1359 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 17:46:14,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:46:14,926 INFO L93 Difference]: Finished difference Result 1204 states and 1376 transitions. [2021-11-25 17:46:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:46:14,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 74 [2021-11-25 17:46:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:46:14,932 INFO L225 Difference]: With dead ends: 1204 [2021-11-25 17:46:14,932 INFO L226 Difference]: Without dead ends: 1204 [2021-11-25 17:46:14,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 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 17:46:14,934 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 15 mSDsluCounter, 3130 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4177 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:46:14,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 4177 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:46:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-11-25 17:46:14,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1202. [2021-11-25 17:46:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 761 states have (on average 1.783180026281209) internal successors, (1357), 1195 states have internal predecessors, (1357), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-25 17:46:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1374 transitions. [2021-11-25 17:46:14,957 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1374 transitions. Word has length 74 [2021-11-25 17:46:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:46:14,958 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1374 transitions. [2021-11-25 17:46:14,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 17:46:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1374 transitions. [2021-11-25 17:46:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 17:46:14,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:46:14,959 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:46:14,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:15,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:15,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-25 17:46:15,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:46:15,564 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:46:15,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:46:15,565 INFO L85 PathProgramCache]: Analyzing trace with hash 829132847, now seen corresponding path program 2 times [2021-11-25 17:46:15,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:46:15,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299773282] [2021-11-25 17:46:15,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 17:46:15,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:46:15,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:46:15,566 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:46:15,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-25 17:46:16,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 17:46:16,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:46:16,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 17:46:16,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:16,203 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 17:46:16,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:16,496 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 17:46:16,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:46:16,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299773282] [2021-11-25 17:46:16,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299773282] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:16,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [966488100] [2021-11-25 17:46:16,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 17:46:16,497 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 17:46:16,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 17:46:16,502 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 17:46:16,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-25 17:46:18,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 17:46:18,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:46:18,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 17:46:18,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:18,364 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 17:46:18,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:18,527 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 17:46:18,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [966488100] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:18,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045793173] [2021-11-25 17:46:18,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 17:46:18,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:46:18,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:46:18,538 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:46:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-25 17:46:36,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 17:46:36,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:46:36,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 17:46:36,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:36,397 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 17:46:36,570 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 17:46:36,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 17:46:36,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 17:46:36,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 17:46:36,654 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 17:46:36,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-25 17:46:36,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 17:46:36,966 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1651) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1652) |c_#memory_$Pointer$.offset|))) is different from true [2021-11-25 17:46:37,068 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.offset|))) is different from true [2021-11-25 17:46:37,083 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1658 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1658))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.base|))) is different from true [2021-11-25 17:46:37,157 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 17:46:37,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-11-25 17:46:37,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 17:46:37,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-11-25 17:46:37,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 17:46:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-25 17:46:37,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:37,760 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) (forall ((v_ArrVal_1670 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1670) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32)))))) is different from false [2021-11-25 17:46:37,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045793173] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:46:37,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2021-11-25 17:46:37,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 11] total 24 [2021-11-25 17:46:37,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433964802] [2021-11-25 17:46:37,770 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2021-11-25 17:46:37,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 17:46:37,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:46:37,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 17:46:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=416, Unknown=15, NotChecked=180, Total=702 [2021-11-25 17:46:37,772 INFO L87 Difference]: Start difference. First operand 1202 states and 1374 transitions. Second operand has 24 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 24 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 17:46:38,878 WARN L860 $PredicateComparison]: unable to prove that (and (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1658 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1658))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.base|))) is different from true [2021-11-25 17:46:39,455 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1658 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1658))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_16) (_ bv44 32))) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.offset|))) is different from true [2021-11-25 17:46:47,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:46:47,770 INFO L93 Difference]: Finished difference Result 1619 states and 1920 transitions. [2021-11-25 17:46:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 17:46:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 24 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2021-11-25 17:46:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:46:47,775 INFO L225 Difference]: With dead ends: 1619 [2021-11-25 17:46:47,775 INFO L226 Difference]: Without dead ends: 1613 [2021-11-25 17:46:47,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=311, Invalid=1459, Unknown=60, NotChecked=522, Total=2352 [2021-11-25 17:46:47,777 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 743 mSDsluCounter, 7030 mSDsCounter, 0 mSdLazyCounter, 5332 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 7708 SdHoareTripleChecker+Invalid, 11361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 5332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6010 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:46:47,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 7708 Invalid, 11361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 5332 Invalid, 0 Unknown, 6010 Unchecked, 8.4s Time] [2021-11-25 17:46:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-11-25 17:46:47,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1217. [2021-11-25 17:46:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 775 states have (on average 1.7754838709677419) internal successors, (1376), 1209 states have internal predecessors, (1376), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-25 17:46:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1394 transitions. [2021-11-25 17:46:47,800 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1394 transitions. Word has length 77 [2021-11-25 17:46:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:46:47,800 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 1394 transitions. [2021-11-25 17:46:47,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 24 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 17:46:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1394 transitions. [2021-11-25 17:46:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 17:46:47,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:46:47,801 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:47,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:48,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-25 17:46:48,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-25 17:46:48,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:46:48,407 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:46:48,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:46:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1210450157, now seen corresponding path program 1 times [2021-11-25 17:46:48,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:46:48,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328387355] [2021-11-25 17:46:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:48,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:46:48,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:46:48,409 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:46:48,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-25 17:46:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:48,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 17:46:48,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:48,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:49,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:46:49,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328387355] [2021-11-25 17:46:49,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328387355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [481213695] [2021-11-25 17:46:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:49,526 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 17:46:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 17:46:49,534 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 17:46:49,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-25 17:46:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:50,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 17:46:50,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:50,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:50,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [481213695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:50,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594254394] [2021-11-25 17:46:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:46:50,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:46:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:46:50,412 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:46:50,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-25 17:46:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:50,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 17:46:50,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:50,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:51,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594254394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:51,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 17:46:51,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 35 [2021-11-25 17:46:51,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245244188] [2021-11-25 17:46:51,795 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 17:46:51,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-25 17:46:51,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 17:46:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-25 17:46:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=808, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 17:46:51,798 INFO L87 Difference]: Start difference. First operand 1217 states and 1394 transitions. Second operand has 35 states, 35 states have (on average 3.0) internal successors, (105), 35 states have internal predecessors, (105), 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 17:46:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:46:54,259 INFO L93 Difference]: Finished difference Result 1250 states and 1436 transitions. [2021-11-25 17:46:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-25 17:46:54,259 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.0) internal successors, (105), 35 states have internal predecessors, (105), 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 82 [2021-11-25 17:46:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:46:54,263 INFO L225 Difference]: With dead ends: 1250 [2021-11-25 17:46:54,263 INFO L226 Difference]: Without dead ends: 1242 [2021-11-25 17:46:54,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1371, Invalid=2789, Unknown=0, NotChecked=0, Total=4160 [2021-11-25 17:46:54,265 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 134 mSDsluCounter, 14678 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 15732 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:46:54,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 15732 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:46:54,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-25 17:46:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1226. [2021-11-25 17:46:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 785 states have (on average 1.7668789808917198) internal successors, (1387), 1219 states have internal predecessors, (1387), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-25 17:46:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1404 transitions. [2021-11-25 17:46:54,291 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1404 transitions. Word has length 82 [2021-11-25 17:46:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:46:54,291 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1404 transitions. [2021-11-25 17:46:54,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.0) internal successors, (105), 35 states have internal predecessors, (105), 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 17:46:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1404 transitions. [2021-11-25 17:46:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 17:46:54,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:46:54,293 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:54,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:54,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2021-11-25 17:46:54,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-25 17:46:54,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:46:54,908 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 635 more)] === [2021-11-25 17:46:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:46:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash 690574639, now seen corresponding path program 3 times [2021-11-25 17:46:54,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 17:46:54,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016664747] [2021-11-25 17:46:54,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:46:54,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 17:46:54,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 17:46:54,910 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 17:46:54,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-25 17:46:56,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-25 17:46:56,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:46:56,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 17:46:56,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:56,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:58,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 17:46:58,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016664747] [2021-11-25 17:46:58,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016664747] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:58,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [167199631] [2021-11-25 17:46:58,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:46:58,576 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 17:46:58,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 17:46:58,576 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 17:46:58,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-25 17:47:19,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-25 17:47:19,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:47:19,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 17:47:19,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:47:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:47:19,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:47:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:47:19,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [167199631] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:47:19,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945453752] [2021-11-25 17:47:19,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:47:19,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:47:19,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:47:19,932 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:47:19,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70e1e6d7-5f84-4b37-a2af-b0996625f6d4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process